Answers
Related Questions
Solve this system of linear equations. Separate
the x- and y-values with a comma.
6x + 3y = -21
12x + 8y = -52
Enter the correct answer.
Answers
Answer:6.71
Step-by-step explanation:
A runner won a 100-meter race with a time of 9.73 seconds. How can you use place value to explain this time?
Answers
Answer: The runner is going exactly 10.2774922919 meters per second
Step-by-step explanation: Using the ratio 100:9.73, we can simplify that to 10.2774922919:1
A 20-inch bicycle has tires with a diameter of 20 inches. What is the circumference of these tires?
31.4 inches
62.8 inches
314 inches
1256 inches
Answers
Answer:B
Step-by-step explanation:
c=2nr or c=nd
2*3.14 * 10= 62.8
3.14 * 20= 62.8
The circumference of the tires is 62.8 inches.
What is Circumference?Circumference of a circle is defined for non straight curves which is the length of the boundary of the curve.
Given that, a 20-inch bicycle has tires with a diameter of 20 inches.
Diameter of the tire = 20 inches.
Radius of a circle or a circular object is half of the diameter of it.
Radius of the tire = 20 / 2 = 10 inches
Circumference of a circular object = 2πr, r is the radius.
Circumference of the tire = 2π r
= 2 (3.14) (10)
= 62.8 inches
Hence the circumference of a bicycle tire is 62.8 inches.
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Which scatter plot shows that the number of gallons of milk sold decreased as the price per gallon increased?
Answers
Answer:
The answer is D
Step-by-step explanation:
Need help asappp
Find the surface area of a triangular prisms, base measures 10 cm, height measures 12 cm, sides measure 13 cm
Answers
Answer:
552
Step-by-step explanation:
Median income is the
A. the middle income reported
B. income in the middle of the data set when incomes are arranged from least to greatest
C. total incomes reported divided by the total number of people surveyed
D. income reported most frequently
Answers
Median income is the income in the middle of the data set when incomes are arranged from least to greatest.
What is the median income?Median is a measure of central tendency that is used to describe the number that is in the middle of a set of numbers that are arranged either in ascending or descending order
For example, the income of 3 workers for march are : $1000, $5000, $10,000. The median income is $5000.
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In ΔIJK, the measure of ∠K=90°, KJ = 63, IK = 16, and JI = 65. What ratio represents the cosecant of ∠I?
Answers
Answer:
1/5
Step-by-step explanation:
Answer:
65/63.
Step-by-step explanation:
65 is the hypotenuse, and JK is opposite angle < I so
csc < I = hypotenuse / opposite side
= 65/63.
An alloy is composed of nickel, zinc, and copper in a ratio of 7:2:9. How many kilograms of each metal are needed to make 3.6 kg of this alloy?
Answers
Answer:
Nickel= 1.8 kg
Zinc= 0.4 kg
Copper= 1.8 kg
Step-by-step explanation:
7:2:9
7=nickel
2=zinc
9=copper
7+2+9=18
18×2=36
7×2=14 2×2=4 9×2=18
Divide by 10
14÷10=1.4 4÷10=0.4 18÷10=1.8
1.8+1.4+0.4= 3.6
1.8=nickel
0.4=zinc
1.8=copper
Amount of each metal are needed to make 3.6 kg of this alloy are,
Nickel = 1.4 kg
Zinc = 0.4 kg
Copper = 1.8 kg
We have to given that,
An alloy is composed of nickel, zinc, and copper in a ratio of 7 : 2 : 9.
Now, We can assume that,
Amount of nickel = 7x
Amount of zinc = 2x
Amount of copper = 9x
Hence, We get;
⇒ 7x + 2x + 9x = 3.6
⇒ 18x = 3.6
⇒ x = 3.6 / 18
⇒ x = 0.2
Thus, WE get;
Amount of nickel = 7x
= 7 × 0.2
= 1.4 kg
Amount of zinc = 2x
= 2 × 0.2
= 0.4 kg
Amount of copper = 9x
= 9 × 0.2
= 1.8 kg
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The area of a circle is given by A = πr^2 , where π = 3.14 and r is the radius of the circle. Determine the area of a circle with radius 14.2 cm. Round your answer to the nearest tenth.
Answers
Answer:
The area of the circle is 1988.1 cm.
Step-by-step explanation:
You basically have all of the instructions on how to do this in the question.
Multiply 3.14 by the radius. 3.14 x 14.2 = 44.588Now you just have to square it. 44.588^2 = 1988.0897.And lastly we have to just round it to the nearest tenth. Rounded = 1988.1.I hope I helped.
Brainliest would be appreciated.
priya finds (1.05) x (2.8) by calculating 105 x 28 then moving the decimal point three spaces to the left
Answers
Answer:
Yes, That is correct.
Step-by-step explanation:
Example: Multiply 0.05 by 1.1
start with:
0.05 × 1.1
multiply without decimal points:
5 × 11 = 55
0.05 has 2 decimal places,
and 1.1 has 1 decimal place,
so the answer has 3 decimal places:
0.055
Priya's method easy finds the product of decimals because multiplying whole numbers is easier than multiplying decimal numbers.
Given that, Priya finds (1.05) × (2.8) by calculating 105 × 28 and then moving the decimal point three spaces to the left.
We need to explain why Priya's method makes sense.
How to multiply two decimals?To multiply decimals, first, multiply as if there is no decimal. Next, count the number of digits after the decimal in each factor. Finally, put the same number of digits behind the decimal in the product.
Now, 105 × 28 = 2,940
Moving the decimal point three spaces to the left, we get 2.940.
Also, (1.05) × (2.8) =2.940
Therefore, Priya's method easy finds the product of decimals, because multiplying whole numbers is easier than multiplying decimal numbers.
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Your question is incomplete, probably the complete question/missing part is:
Priya finds (1.05) × (2.8) by calculating 105 × 28 and then moving the decimal point three spaces to the left. Why does Priya's method make sense?
The regular hexagon has a radius of 4 in.
What is the approximate area of the hexagon?
O 24 in.2
0 42 in.2
048 in 2
084 in 2
4 in
Answers
Answer:
42
Step-by-step explanation:
A=33
2a2=3·3
2·42≈41.56922
Answer:
42
Step-by-step explanation:
helphelphelphelphelphelphelphelphelphelphelphelphelphelphelphelphelphelphelphelphelp
Answers
Answer:
A proportional relation is a logical relation that establishes a range of conditional relations that together involve direct or inverse correlation.
Some common unit rates are miles (or kilometers) per hour, cost per item, earnings per week, etc. In each case the first quantity is related to 1 unit of the second quantity.
A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity.
I have to make sure that there is at least one variable that directly effects another.
Some equations are y = 3x, y = 1.5x, and y = 2/3x.
Step-by-step explanation:
Below is the graph of equation y=− |x−2| +2. Use this graph to find all values of x such that y>0
Answers
Answer:
Value of y > 0 at [tex]x = \{0, 1, 2, 3, 4\}[/tex]
Step-by-step explanation:
As seen from the graph attached in answer area as well, The graph is above x-axis (i.e. y value of equation) only when x has values {0, 1, 2, 3, 4}.
At x = 0:
[tex]y = -|0-2| + 2 \\\Rightarrow -2 + 2\\ \Rightarrow y = 0[/tex]
At x = 1:
[tex]y = -|0-1| + 2 \\\Rightarrow -1 + 2\\ \Rightarrow y = 1[/tex]
At x = 2:
[tex]y = -|2-2| + 2 \\\Rightarrow 0 + 2\\ \Rightarrow y = 2[/tex]
At x = 3:
[tex]y = -|3-2| + 2 \\\Rightarrow -1 + 2\\ \Rightarrow y = 1[/tex]
At x = 4:
[tex]y = -|4-2| + 2 \\\Rightarrow -2 + 2\\ \Rightarrow y = 0[/tex]
Value of y > 0 at [tex]x = \{0, 1, 2, 3, 4\}[/tex]
A survey was taken of 75 potential voters, asking them which candidate they would vote for in a local election. The
results are given in the table below.
CANDIDATE NUMBER OF SUPPORTERS
x
41
Y
14
Z
20
If 2,000 people vote in the actual election, which is the best prediction for the number of votes for candidate X, based
on the results of this poll?
41
670
800
1.100
Answers
Answer:
41 is the right answer!
The volume of this square pyramid is 200in^3. Find the value of x.
Answers
Answer:
x = 5 in.
Step-by-step explanation:
Volume = 1/3 * area of the base * height
200 = 1/3 * 8*15 * x
200 = 40x
x = 5 in.
Math question down below
Answers
Answer:
E
E is the only one that ends with 70 and is also all multiples of 6.
On a coordinate plane, a curved line crosses the x-axis at (negative 1, 0) and crosses the y-axis at (0, 0.25). The line exits the plane at (negative 2, negative 6) and (2, 6). Which statement is true about the end behavior of the graphed function?
Answers
Answer:
b
Step-by-step explanation:
hope this helps
Answer:
b
Step-by-step explanation:
Find the measures of the vertical angles shown. Show all work for full credit.
Answers
Answer:
40 degrees
Step-by-step explanation:
Look at the attachment
What is the mean absolute deviation of this data set? 26, 31, 32, and 39
Answers
Answer:
3.5
Step-by-step explanation:
26, 31, 32, and 39
First we need to find the mean
(26+ 31+ 32+ 39) /4
128/4 = 32
The mean absolute deviation is sum of the positive difference between the number and the mean divided by the number of terms
((32-26)+ (32-31)+ (32-32)+ (39-32)) /4
14/4
3.5
Is this angle acute right obtuse or straight
Answers
Answer:
obtuse
Step-by-step explanation:
Over 90 degrees
Answer:
Obtuse
Step-by-step explanation:
The angle is obtuse because the angle is more than 90 degrees.
Select the correct answer.
Solve the equation by completing the square.
x^2 - 18x + ___ = 4 + ___
Answers
Answer:
A!!!!
Step-by-step explanation:
Twenty people apply for an open position at an accountant's office. The distribution of ages of the applicants is shown in the box plot.
Distribution of Applicant's Ages
How many of
age in years
the applicants have ages that fall within the box of the box plot?
Please help!!!!
Answers
Answer:
The number of applicants that have ages that fall within the box of the boxplot = 10.
Step-by-step explanation:
box plot is constructed from five values: the minimum value, the first quartile, the median, the third quartile, and the maximum value.
The boxplot usually consists of a box and a whisker plot.
The whiskers represent data that is less than the first quartile or 25th percentile and data that is more than the third quartile or 75th percentile.
The box of the boxplot is bounded by the first quartile or 25th percentile and the third quartile or 75th percentile.
Hence, the fraction of the distribution that is usually contained in the box of the boxplot is (75 - 25), 50% of the distribution.
The total number of applicants = 20
50% of 20 = 10.
Hence, the number of applicants that have ages that fall within the box of the boxplot = 10
Hope this Helps!!!
Ahmed wrote two numbers. The first number has a 7 in its tenths place. The
second number has a 7 with a value that is 1,000 times greater than the value of
the 7 in the first number. In which place is the 7 in the second number?
1) tens
» hundreds
» thousands
1) hundred thousands
Done →
Answers
Answer: i think the answer is B thousands
Step-by-step explanation:
True or False.
A dilation is defined by a scale factor.
Answers
Answer:
True
Step-by-step explanation:
The answer will be true for the following question.
True or False.
A dilation is defined by a scale factor.
Hope this helps
Answer:
True would be your answer. Hope this helps. : )
Step-by-step explanation:
choose the function whose graph is given by:
Answers
Answer:
Option C
(would really, reallly appreciate the brainliest)
Step-by-step explanation:
plotted with desmos (free online math tool)
The function whose graph is given is y = 0.5cosx
What is a function?A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
Given that, a graph we need to find its function,
To analyze the given graph let us,
compare the given to a known, standard functiontake maxima and minima points from the graph and analyze them.From the given graph we can pick the points which can tell us about the nature of the cosine function we took,
It is clear from the graph that the function plotted is equal to the standard function i.e. cos(x)
in cos(x) ⇒ we have minima at (-π, 1)
in the given graph, the function has a maximum and touches the y-axis at (0, 0.5)
Therefore, 0.5cosx is the function represented in the graph.
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What is the completely factored form of f(x) = x^3 – 2x^2 – 5x + 6?
Answers
Answer:
D
Step-by-step explanation:
Answer:d
Step-by-step explanation:
What is the slope of a line PARALLEL to the graph?
b. 0
C. 3
d.
31
2
-2
0
6
В
D
Answers
Answer:
Step-by-step explanation:
hello :
this line passes trough A(1,1) and B(2,4)
the slope is : (YB - YA)/(XB -XA)
(4-1)/(2-1) = 3/1
the slope is : 3.....answer : C (parallal means : same slope)
i just need the work for 11 & 12. i know the answer for 11 is (16,4) and 12 is (5,7) but i don’t know how to work it out to get those answers. (solving a system of linear equations)
Answers
Answer:
Step-by-step explanation:let x be the number of bicycles,
let y be the number of tricycles
given x+y=20→equation 1
also given 2x+3y=44→equation 2
from eq 1, y=20-x
substitudin ineq 2
2x+3(20-x)=44
2x+60-3x=44
60-x=44
-x=44-60
=-16
x=+16
then y=20-16=4
no of bicycles=16
no of tricycles=4
hope this helps
plzz mark me brainliest
what is the upper quartile in the box plot
Answers
Answer:
121
Step-by-step explanation:
Answer:
121
Step-by-step explanation:
Because it shows clearly that small box is 121
PLEASE HELP 100 POINTS! D) How do you calculate the he residuals for a scatter plot?
E) calculate the residuals for you scatter plot in step 2d (the picture of the graph is attached) I’ll give brainliest if you answer both! :)
Answers
Answer:
PLEASE HELP 100 POINTS! D) How do you calculate the he residuals for a scatter plot?
E) calculate the residuals for you scatter plot in step 2d (the picture of the graph is attached) I’ll give brainliest if you answer both! :)
“To find the residual, you would subtract the predicted value from the measured value so for x-value 1 the residant would be” is how you would find the answer.
