Answer:
Total magic cakes =300
chocolate cakes =90
so if you want the percentage of chocolate you will divide the number of chocolate cakes over the total number of chocolates
% of chocolate cakes = 90/300×100%
=30%
Triangles ABC and DEF are similar. The height of
triangle DEF is 4 cm. Find the area of triangle ABC.
a. 1.5 cm
b. 2 cm
c. 6 cm
d. 3 cm
Option C
Height of DEF = 4cm
Therefore ratio = 1:2
Base = 3cm
Height of ABC = 2cm
Area of ABC = 1/2×b×h
= 1/2×3×4
= 6cm²
Option C
Answered by Gauthmath must click thanks and mark brainliest
Lines m and p are perpendicular. If the slope of line m is -3, what is the slope of line p?
Answer: The slope of p is 1/3
Step-by-step explanation:
If the lines are perpendicular, this means they are opposite.
Thus, O is opposite P and since O = -3, P = 1/3
Find m(angle) and give a trig equation
Step-by-step explanation:
Just using the Pythagoras theorem
Explain the Skill
Watch the following video on fractions and then try the exercises.
13
12
14
Practise the Skill
Mia is having a party with friends.
The pizzas and pies have already been cut into portions.
Match the shaded area of the pizzas and pies to the correct fraction.
an image
Correct
an image
Correct
an image
Correct
Practise the Skill
One fifth of the people coming to the party are under 18.
Select this fraction.
14
1
4
Incorrect 110
1
10
15
1
5
12
1
2
Mia has been very creative and made a pizza with different toppings.
an image
What fraction of the pizza is mushrooms?
Incorrect - Correct Answer: 14
1
4
Practise the Skill
At the party, two-fifths of the crisps for guests will be ready salted. Select this fraction.
12
1
2
34
3
4
15
1
5
25
2
5
Correct 23
2
3
52
5
2
Mia cuts a cake equally into ten pieces. Three pieces are left.
an image
What fraction is left?
Correct
One tenth of the guests have brought food for the party. Select this fraction.
110
1
10
18
1
8
15
1
5
14
1
4
12
1
2
Explain the Skill
Finding a Fifth
When an amount is shared into 5 equal parts, each part is called a fifth.
The amount is divided by 5. A fifth is one of five equal parts.
Example
A minibus is carrying 10 people. 15
1
5
of the people on the minibus are children.
Calculate how many people on the minibus are children.
To find a fifth of an amount, divide the amount by 5.
The calculation is 10 ÷ 5 = 2
So, the minibus is carrying 2 children.
Explain the Skill
Finding a Tenth
When an amount is shared into 10 equal parts, each part is called a tenth.
The amount is divided by 10. A tenth is one of ten equal parts.
Example
There are 50 people at a party. 110
1
10
of the people at the party are vegetarian.
Calculate how many people at the party are vegetarian.
To find a tenth of an amount, divide the amount by 10.
The calculation is 50 ÷ 10 = 5
So, 5 people at the party are vegetarian.
Practise the Skill
550 people attend a conference.
15
1
5
of the attendees have a dietary requirement.
Calculate the number of people who have dietary requirements by completing the calculation below.
The average cost for a product is C (x )equals 2 x plus 54 plus 98 over x, where C is measured in dollars and x is the number of units. How many units must be produced in order to minimize average cost
Answer:
7 units
Step-by-step explanation:
Given
[tex]C(x) = 2x + 54 + \frac{98}{x}[/tex]
Required
The units that minimize the average cost
[tex]C(x) = 2x + 54 + \frac{98}{x}[/tex]
Differentiate
[tex]C' = 2 + 0 - 98x^{-2}[/tex]
[tex]C' = 2 - 98x^{-2}[/tex]
Equate to 0 to solve for x
[tex]0 = 2 - 98x^{-2}[/tex]
Collect like terms
[tex]98x^{-2} = 2[/tex]
Divide by 98
[tex]x^{-2} = \frac{1}{49}[/tex]
Rewrite as:
[tex]\frac{1}{x^2} = \frac{1}{49}[/tex]
Take square roots of both sides
[tex]\frac{1}{x} = \±\frac{1}{7}[/tex]
Take multiplicative inverse of both sides
[tex]x = \±7[/tex]
Only positive value will produce critical value. Hence, 7 units will produce the minimum average cost
Math property
-75+(23+75)=(75+75)-23=0-23=-23
Given:
Consider the expression is:
[tex]-75+23+75[/tex]
To find:
The value of the given expression by using the math properties.
Solution:
We have,
[tex]-75+23+75[/tex]
It can be written as:
[tex]=-75+(23+75)[/tex]
[tex]=-75+(75+23)[/tex] [Commutative property of addition]
[tex]=(-75+75)+23[/tex] [Associative property of addition]
[tex]=0+23[/tex]
[tex]=23[/tex]
Therefore, the value of the given expression is 23.
I have trouble with these two questions, even i did my equation but i don’t get the answers
Answer:
$318.17, out of state college is $161.12 cheaper per month
Step-by-step explanation:
72*24 = 1728 + 410*4 = 1728 + 1640 = 3368 + 450 = 18/12 = $318.17
8700+650*9 = 8700 + 5850 = 14550/9 = 1616.66
8500+400*9 = 8500 + 3600 = 12100 + 1000 = 13100/9 = 1455.56
1616.67 - 1455.56= $161.11 (use $161.12)
In the Fuel Economy Guide for 2018 model vehicles, the Environmental Protection Agency gives data on 1160 vehicles. There are a number of outliers, mainly hybrid gas electric vehicles. If we ignore outliers, the combined city and highway gas mileage of the other 1134 vehicles is approximately Normal with mean 22.6 miles per gallon (mpg) and standard deviation 5.2 mpg.
Required:
a. What proportion of vehicles have worse gas mileage than the 2020 Honda Civic?
b. My dad has a truck that gets around 14 mpg. How many standard deviations from the mean is my dad's truck?
Answer:
a) The probability is the p-value of [tex]Z = \frac{X - 22.6}{5.2}[/tex], in which X is the gas mileage of the 2020 Honda Civic.
b) Your dad's truck is 1.65 standard deviations below the mean.
Step-by-step explanation:
Normal Probability Distribution
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Normal with mean 22.6 miles per gallon (mpg) and standard deviation 5.2 mpg.
This means that [tex]\mu = 22.6, \sigma = 5.2[/tex]
a. What proportion of vehicles have worse gas mileage than the 2020 Honda Civic?
This is the p-value of Z, given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{X - 22.6}{5.2}[/tex]
In which X is the gas mileage of the 2020 Honda Civic.
b. My dad has a truck that gets around 14 mpg. How many standard deviations from the mean is my dad's truck?
This is Z when X = 14. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{14 - 22.6}{5.2}[/tex]
[tex]Z = -1.65[/tex]
Your dad's truck is 1.65 standard deviations below the mean.
Find the Distance in Coordinate Plane (23-24)
Find the distance AB Show Work.
Answer:
i am not sure but i think its 1.16
Step-by-step explanation:
In triangleABC, AC = 15 centimeters, m
Answer:
16.17 cm
Step-by-step explanation:
The solution triangle attached below :
To obtain BC ; we use the sine rule ;
a/ sin A = b / sin B
A = (180 - (68 + 24))
A = 180 - 92
A = 88°
a / Sin 88 = 15 / sin 68
Cross multiply :
(a * sin 68) = (15 * sin 88)
a = 14.990862 / sin 68
a = 16.168165
a = 16.168 cm
Write the equation of the line for the graph shown below, please
Answer:
Given the proposed interrogate, as well as the graph provided, the correct answer is B. Y = 1/2 x + 4
Step-by-step explanation:
To evaluate such, a comprehension of linear Cartesian planes are obligated:
Slopes = rise/run
X- intercept: The peculiar point in which linear data is observed to intersect the x-axis.
Y- intercept: The peculiar point in which linear data is observed to intersect the y-axis.
Slope: 1/2 as for every individual space endeavored, a space of 2 to the right is required.
Y- intercept: (4,0)
Thus, the ameliorated answer to such interrogate is acknowledged as B. Y = 1/2 x + 4.
*I hope this helps.
For this question it’s asking for it in slope intercept form. So all you need to find is the slope and the y intercept.To find the y int look at where the line passes y. In this case it is y=4, then find slope by finding change in y/ change once which is 1/2, so you get y=1/2x+4
find the missing length indicated
9514 1404 393
Answer:
x = 1500
Step-by-step explanation:
The right triangles are all similar, so the ratio of hypotenuse to short leg is the same for all.
x/900 = (1600+900)/x
x^2 = 900(2500) . . . . . . cross multiply
x = 30(50) . . . . . . . . . . . take the square root
x = 1500
A paper factory makes cardboard sheets like the one shown below. If the area of each sheet is given by the expression 6x ^ 2 + 7x + 2, what are the dimensions of each sheet of cardboard?
Answer:
67^2+76+2
that's my answer towards this question
Express 0.6(27..).)))) as a fraction
I assume you mean the number x = 0.6272727….
You have
10x = 6.272727…
1000x = 627.272727…
==> 1000x - 10x = 990x = 621
==> x = 621/990 = 69/110
How far can you travel in 19 hours at 63 mph
Answer:
1197 miles.
Step by step explanation:Speed(s) = 63 mph
Time(t) = 19 hours
Distance(d) = ?
We know,
D = S × T
= 63 × 19
= 1197 miles
1 1/5 + 17/2 - 3/2 Helppppp
Answer:
[tex]\frac{82}{10}[/tex]
Step-by-step explanation:
[tex]1\frac{1}{5} +\frac{17}{2} -\frac{3}{2}[/tex]
→ Convert the mixed number into an improper fraction
[tex]\frac{6}{5} +\frac{17}{2} -\frac{3}{2}[/tex]
→ Complete the takeaway operation
[tex]\frac{6}{5} +\frac{14}{2}[/tex]
→ Make the denominators the same
[tex]\frac{12}{10}+\frac{70}{10}[/tex]
→ Simplify
[tex]\frac{82}{10}[/tex]
Answer:
8.2
Step-by-step explanation:
#21-24 need help with
Answer:
117
Step-by-step explanation:
1×2^6 + 1×2^5 + 1×2^4 + 0×2^3 + 1×2^2 + 0×2^1 + 1×2^0
1×64+1×32+1×16+0×8+1×4+0×2+1×1
=64+32+16+0+4+0+1
=117
Which formula can be used to describe the sequence?
Of(x) = 1.2(2.5) - 1
Of(x) = 2.5(1.2) - 1
O f(x) = 1.2(2.5)*
Of(x) = 2.5(1.2)*
Answer:
C could be used to show the formula
Sequence of numbers is collection of ordered numbers. The given sequence is described by formula:
What is a geometric sequence and how to find its nth terms?There are three parameters which differentiate between which geometric sequence we're talking about.
The first parameter is the initial value of the sequence.
The second parameter is the quantity by which we multiply previous term to get the next term.
The third parameter is the length of the sequence. It can be finite or infinite.
Suppose the initial term of a geometric sequence is and the term by which we multiply the previous term to get the next term is
Then the sequence would look like
(till the terms to which it is defined)
Thus, the nth term of such sequence would be
Tn = ad^n-2
For the given sequence, it can be seen that each term is divided by 3 to get the next term. We can take it as we're doing multiplication by 1/3
Thus, the given sequence is geometric sequence and its characteristics are:
Thus, ith term is given as:
Ti = 27/3^i-2
We write sequence as: {an}b_c
where n starts with value b and runs integer values and end up on n = c
For this case, we've n = 1 to 5, thus,
The given sequence is written as:
{27/3^n-1 }5_1
Thus,
The given sequence is described by formula: {27/3^n-1 }5_1
Learn more about geometric sequence here:
brainly.com/question/2735005
#SPJ7
complete question:
Which formula can be used to describe the sequence below?
27,9,3,1,1/3
ILL MARK BRAINILEST IF YOU ANSWER!!!
Jerry decides to participate in the horseshoe
tournament at the Wellesley Apple Butter and Cheese
festival. The toss of the shoes can be modelled using
the equation, h = -0.1(d + 1)(d - 12), where h represents
height in metres and d represents distance in metres.
a) Sketch the graphical model.
b) What is the maximum height of a horseshoe?
Answer:
[tex]h_{max}=5.5[/tex]
Step-by-step explanation:
Given
[tex]h = -0.1(d + 1)(d - 12)[/tex]
Solving (a): The graph
To do this, we plot h on the vertical axis and d on the horizontal
See attachment for graph
Solving (b): The maximum of h
From the attached graph, h has the maximum value when:
[tex]d = 4.225[/tex]
So, the maximum of h is:
[tex]h_{max}=5.5[/tex]
Tom and Carl start 200 miles apart, running towards each other. Tom runs 5 miles per hour faster than Carl. If they meet after 10 hours, how fast are they running?
Answer:
12.5 mph and 7.5 mphStep-by-step explanation:
Tom's speed = xCarl's speed = yWe have:
x = y + 5(x + y)*10 = 200Substitute x and solve for y:
(y + y + 5)*10 = 2002y + 5 = 202y = 15y = 7.5Find x:
x = 7.5 + 5 = 12.5Tom's speed is 12.5 mph
Carl's speed is 7.5 mph
Now
a=b+510(a+b)=200From eq(2)
a+b=20From eq(1)
a-b=5Adding these recent two
2a=25a=12.5mphPutting in eq(1)
b=a-5b=12.5-5b=7.5mphComplete factorization of x^3+4x^2-20x-48
Answer:
(x + 6) • (x + 2) • (x - 4)
Step-by-step explanation:
STEP
1
:
Equation at the end of step 1
(((x3) + 22x2) - 20x) - 48
STEP
2
:
Checking for a perfect cube
2.1 x3+4x2-20x-48 is not a perfect cube
Trying to factor by pulling out :
2.2 Factoring: x3+4x2-20x-48
Thoughtfully split the expression at hand into groups, each group having two terms :
Group 1: x3-48
Group 2: 4x2-20x
Pull out from each group separately :
Group 1: (x3-48) • (1)
Group 2: (x-5) • (4x)
Consider a political discussion group consisting of 4 Democrats, 9 republicans, and 4 independents. Suppose that two group members are randomly selected in succession to attend a political convention. Find the probability of selecting two Democrats.
I have 3 questionssss
∠A and ∠T are supplementary. Given m∠T = (7x+11)° and m∠A = (8x+19)°, what is m∠T?
The other two are in the pics attached! PLS!
Answer:
<T = 81
x = 10, angle = 60
Angle 5 and Angle 3 are vertical angles. They are acute angles
Step-by-step explanation:
Supplementary angles add to 180
(7x+11) + (8x+19) = 180
Combine like terms
15x + 30 = 180
Subtract 30 from each side
15x +30-30 = 180-30
15x= 150
Divide by 15
15x/15 = 150/15
x = 10
We want angle T
T = 7x+11 = 7(10)+11 = 70+11 = 81
The two angles add to 90
5x+10 + 30 = 90
Combine like terms
5x+40 = 90
5x+40-40 = 90-40
5x = 50
Divide by 5
5x/5 = 50/5
x=10
5x+10 = 5(10) +10 = 50+10 = 60
Angle 5 and Angle 3 are vertical angles. They are acute angles
I need help please I don’t understand
Answer:
Step-by-step explanation:
180 = ∠BAC + 52 +62
66 = ∠BAC
Which of the following describes the diagonals of a square?
Select the best answer from the choices provided.
A. They are not congruent.
B. They are not perpendicular to each other.
C. They bisect the opposite angles.
D.
All of the answers are correct.
Answer:
ALL OF THE ANSWERS ARE CORRECT .
HOPE IT HELP YOU.
Two buses leave towns 1060 kilometers apart at the same time and travel toward each other. One bus travels 14 kilometers an hour faster than the other. If they meet in 5 hours, what is the rate of each bus?
Answer:
99, 113
Step-by-step explanation:
X-the first bus
X+14-the second bus
5x+5(x+14)=1060
10x+70=1060
10x=990
X=99-the first bus
99+14=113-the second bus
The following data show the number of candies in 15 different bags.
35, 48, 36, 48, 43, 37, 43, 39, 45, 46, 40, 35, 50, 38, 48
Answer:
How should we proceed with this question
I will give brainliest
Answer:
uncertain for the first image and words to choose for the second image
Step-by-step explanation:
The text implies that she does not know and that there are many words to choose.
A pharmaceutical company conducted an experiment to test a drug for managing morning sickness for school children. The
company enrolled students for the experiment in the age group of 10 to 15 and divided them into two groups. One group
received sugar pills and the other group received pills that have compounds to manage morning sickness. Which group
receives the placebo?
Answer:
In an experiment, one group receives a new antidepressant medication and the other group receives a sugar pill. the group receiving the new antidepressant medication is called the ________ group.
a. dependent
b. placebo
c. experimental
d. control.
A coach surveyed a random sample of 200 college athletes about their height.
A 2-column table with 4 rows. Column 1 is labeled Height (inches) with entries 60 to 64, 65 to 69, 70 to 74, 74 to 76. Column 2 is labeled Frequency with entries 14, 28, 53, 67.
Which statements are correct about the data in the table? Check all that apply.
A bar graph is an appropriate display.
A pie chart is an appropriate display.
A bar graph is not appropriate because the heights of the bars would be too different.
A pie chart is not appropriate because the categories do not add to 100%.
A bar graph is appropriate because the frequencies are given.
Answer:
A bar graph is an appropriate display.
A pie chart is not appropriate because the categories do not add to 100%.
A bar graph is appropriate because the frequencies are given.
Answer:
i. A bar graph is an appropriate display.
ii. A bar graph is appropriate because the frequencies are given.
Step-by-step explanation:
A bar graph is a graphical method that can be used to present an information from a sample of data. It requires drawing of bars of equal width and distance with respect to the information given.
While a pie chart is a method that requires presenting information in a circular chart with respect to each data in sectors of different central angles.
For the given question, the most appropriate method to use is the bar graph with respect to the given information. Thus, the statements that are correct about the data in the table are:
i. A bar graph is an appropriate display.
ii. A bar graph is appropriate because the frequencies are given.
Answer:
The answers are:
A.)A bar graph is an appropriate display.
D.)A pie chart is not appropriate because the categories do not add to 100%.
E.)A bar graph is appropriate because the frequencies are given.
Step-by-step explanation:
Got it right on edge2021, hope this helps you out
