Answer:
8 yrs
Step-by-step explanation:
3(5+x)=31+x
15+3x=31+x
2x=16
x=2
Answer:
8 years.
Step-by-step explanation:
let after x years father's age is 3 times that of Rahul.
31+x=3(5+x)
31+x=15+3x
31-15=3x-x
2x=16
x=16/2=8
21. A square park has an area of 120 m2
a) What are the dimensions of the park? Give your answer to the nearest metre.
b) If fencing costs $18.50/m, how much would it cost to install a fence around the park?
Show your work
plsss help me quick :((
Answer:
120m2
$6.25
$4.50
85
57
12
12
32
54
69
87
89
12
34
58
(81)¾ - (27)⅓
\3 × 2³
Answer:
I won't tell you the answer but if you read the solution, you would understand it.
Step-by-step explanation:
81^3/4 is basically 3 times the fourth root of 81. What number multiplies 4 times to make 81? Then multiply that by 3.
Now we have the cube root of 27. If you have a fractional exponent with no numerator, that just means square root, cube root, fourth root.
Eg. the exponent 1/4 would just mean fourth root
Eg. The exponent 1/2 would just mean square root
The cube root of 27 is 3.
The denominator is 3 times 2 to the third power.
PEMDAS
Order of Operations tells us we do exponents first so 2 to the third power is 8 and multiply by that 3.
You have all the information you need. Now just use your arithmetic skills! Let me know if you need more help.
For which function is the ordered pair (5, 10) not a solution?
y = 15 - x
y = x - 5
y = x + 5
y = 2 x
Answer:
y = x - 5
Step-by-step explanation:
y = x - 5
10 = 5 - 5
10 is not equal 0
Answer:
y = x - 5
Step-by-step explanation:
y = x - 5
10 = 5 - 5
10 is not equal 0
A coin was tossed 80 times, out of which it landed on heads 60 times. What is the relative frequency of the coin toss resulting in tails?
Answer : 25%
Step-by-step explanation : If a coin was tossed 80 times and it landed 60 times, 80 - 60 = 20 so 20/80 were tails, let's convert that into % so 20 is 1/4 of 80 so 25%.
will mark brainly :)
y=1/2(x-3)^2
y=1/2(x+3)^2
y=2(x-3)^2
y=2(x+3)^2
Answer:
y = 1/2 (x-3) ^2
Step-by-step explanation:
I hope this helps!
Amold uses
fence?
of a tin of paint to cover 1 z m of fence. What is the smallest number of tins he needs to cover 12 m of fence
if <mac=86 of a pizza and I ate it, how many degrees of pizza did I give to you
A pizza consists of a whole circle i.e 360°
So
Let your part be x
[tex]\\ \rm\Rrightarrow x+86=360[/tex]
[tex]\\ \rm\Rrightarrow x=360-86[/tex]
[tex]\\ \rm\Rrightarrow x=274°[/tex]
Any help would be appreciated
Answer:
Q1: 0.88015 ~ 88.015%, are
Q2: 0.88176 ~ 88.176%, are not
Step-by-step explanation:
Okay so a simple way to do these probability ones is to add an extra space around each side
A B C D
ACCURATE 310 262 246 144 ___
NOT ACCURATE 31 51 37 12 ___
___ ___ ___ ___ ___
Now in these spaces add all the the rows and columns accordingly
A B C D
ACCURATE 310 262 246 144 _962_
NOT ACCURATE 31 51 37 12 _131_
_341_ _343_ _283_ _156_ _1093_
Now the number in the place where the additional rows meet is your total number of orders, so this is what you would use for your probability.
So we are looking for ACCURATE / ALL which is 962
Now do 962 divided by 1093 and your probability comes out to 0.88015, so as a percentage, would be 88.015%
With replacement, all variables become independent, however without replacing that changes the probability.
When the 2 orders are selected, the final number of probability changes - so it would take down the total each time, the find the mean or average of the probability for your answer.
So since there is no replacement for ACCURATE / ALL which is 962, the division instead would be by 1091, since we are taking 2 orders out and not putting them back, it brings down the total number by 2, which would make the probability come out to 0.88176, or 88.176%
Your friend tried putting away the sugar for you and cannot get the 14 cups of sugar to fit in the containers! They determined you would need 9 containers to store the 14 cups of sugar.
They show you their calculations:
Answer the following questions.
What mistake did your friend make in calculating the number of containers needed?
*Hint* Look closely at the work shown to find the mistake
How many containers are needed to store the leftover sugar?
Answer:
21 containers
Step-by-step explanation:
When dividing fractions, you can multiply by the inverse of the fraction. For example, in this case, [tex]14 divided by \frac{2}{3} = \frac{14}{1}x\frac{3}{2}[/tex]. Whoever drew the calculations made the mistake of forgetting to flip the second fraction.
The actual solution of the problem is 42/2, or 21/1. 21 containers are needed to store the sugar.
Sum of an integer and 5 more than half of this integer is at almost 59
Answer:
36
Step-by-step explanation:
x + (1/2)x + 5 = 59
1.5x = 54
x = 36
plz help first one who answers gets brainlyest
Colleen buys a robot priced at $33.If the sales tax is10%,how much tax will Colleen pay?
Answer:
$3.3 tax
Final price is 36.3
Step-by-step explanation:
Firstly, if the tax is expressed in percent, divide the tax rate by 100. You can do this by simply moving the decimal point two spaces to the left. In this example, we do 10/100 = 0.1
tax= 33 * 0.1
tax=3.3
Finally, add tax to the before tax price to get the final price including tax.
The final price including tax = 33 + 3.3 = 36.3
Question 3 "Try Again." Mary needs 3 feet of boondoggle for a craft project.
Boondoggle costs $0.25 per inch. How much will the project cost Mary?
Answer:
$9.00
Step-by-step explanation:
We can use conversion factors to solve this equation. The multiplication sequence that I got is shown below:
[tex]\frac{3ft}{1}[/tex] × [tex]\frac{12 in}{1ft}[/tex] × [tex]\frac{0.25}{1in}[/tex]
Our feet and inches cancel out and we get the final expression [tex]\frac{3*12*0.25}{1}[/tex], which is equal to 9, or $9.00.
Hopefully that was helpful! :)
Factoring polynamials: 6x^2y-3xy^2
Answer:
-y • (6x^2 + 3xy - 4)
Step-by-step explanation:
Dylan is selling boxes of candy. He purchases them for $1.50 each and
marks up the price by 50%. How much is Dylan planning to charge? *
Answer:
2.25
Step-by-step explanation:
1.50+50%=2.25
does any one know the Inequality Notation for this [9,∞)
Answer:
x>=9
Step-by-step explanation:
so, we can plot this on a number line
the point at 9 is a solid dot, since brackets (not parenthasis) indicates that we including the number. the shaded part of the line extends all the way to positive infinity. the shaded part means that it is a solution, while the un-shaded parts aren't solutions to [9,infinity) it is x>=9 and not x>9 because 9 is included.
x>=9 is the answer
simplify the expression below and rewrite it in rational exponent form
I WILL GIVE BRAINIEST, PLEASE HELP
Answer:
A = (1, 10)
B = (4,10)
C = (4, 14)
D = (1, 16)
Step-by-step explanation:
Okay, so first, we move, or translate the quadrilateral PQRS down -8 spaces on the graph, turning old points:
P (1, -2) = (1, -10) Q (4, -2) = (4, - 10) S (1, -8) = (1, -16) and R (4, -6) = (4, -14)
Now, we need to rotate this new box into -x, y. So our new points are:
(1, -10) = (-1, 10) (4, -10) = (-4, 10) (1, -16) = (-1, 16) and (4,-14) = (-4, 14)
Now we're reflecting off the y-axis, making our x change. So for our final points:
A(1, 10) B (4,10) D(1, 16) and C(4, 14)
Hope this helps! Please check my math and comment wether this worked or not! :)
Answer:
hi
Step-by-step explanation:
+10 points plus a brainly
Select the point(s) that are a solution to the equation or inequality.
y=7x−3
Question 5 options:
(2, 6)
(1, 0)
(0, -3)
(-1, -10)
Answer:
(0, -3) is good, good luck for you
Math help
would like to know how to do it step by step and answer
Answer:
0.01085 ~ 1.085%
Step-by-step explanation:
Okay so a simple way to do these probability ones is to add an extra space around each side
YES NO
POSITIVE 325 2 _____
NEGATIVE 16 1131 _____
_____ _____ _____
Now in these spaces add all the the rows and columns accordingly
YES NO
POSITIVE 325 2 _327_
NEGATIVE 16 1131 _1147_
_341_ _1133_ _1474_
Now the number in the place where the additional rows meet is your total number of patients, so this is what you would use for your probability.
So we are looking for YES / NEGATIVE which is 16
Now do 16 divided by 1474 and your probability comes out to 0.01085..., so as a percentage, would be 1.085%
Hope that helped :)
If given 5 miles is 8km convert 13.5 miles into km
Step-by-step explanation:
There are 2 ways we can do this. We can use our friend which we will call a special device or we could actually solve using formulas we already know. Today, I will be using a formula but you can easily just use the secret device.
Step 1: Knowing the formula which is multiply miles by 1.609 and then round to the nearest tenth or hundredth.
13.5 X 1.609 = 21.7215.
Round down to 21.7.
Final Answer: 21.7 Km is equal to 13.5 miles or vice versa.
How to Solve 2x = 9?
=》2x = 9
=》x = 9/2
=》x = 4.5
■ Take all the numbers to the right side leaving the variable alone on the the other side of the equation & then simplify it.
_____
RainbowSalt2222 ☔
Please help!!! I have to submit this by today.
[tex]i \div 8 = 12[/tex]
Answer:
i = 96
Step-by-step explanation:
i ÷ 8 = 12i = 12 × 8i = 96Solve step by step:
What is the equation of a line that is perpendicular to the line y=2x+1 and passes through the point (4,6)?
Answer:
y = - [tex]\frac{1}{2}[/tex] x + 8
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 2x + 1 ← is in slope- intercept form
with slope m = 2
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{2}[/tex] , then
y = - [tex]\frac{1}{2}[/tex] x + c ← is the partial equation
To find c substitute (4, 6 ) into the partial equation
6 = - 2 + c ⇒ c = 6 + 2 = 8
y = - [tex]\frac{1}{2}[/tex] x + 8 ← equation of line
graphically represent
The cuadratic relation
boberson is after then my mom
Help please ! I need the answer ASAP
Answer:
[tex](f + g)(1) = - 3[/tex]
Step-by-step explanation:
[tex](f + g)(x ) = (2x - 3) + (4x - 6) \\ = 6x - 9 \\ \\ (f + g)(1) = 6(1) - 9 \\ = 6 - 9 \\ = - 3[/tex]
I hope I helped you^_^
Heyyyyyyyyyyyyyyyyyyyyyy
Answer:
7/12
Step-by-step explanation:
you have to find a common denominator, which would be 12. it would be 4/12 + 3/12. add them up, and you get 7/12
what is the measure of < 3?
I believe it's 45°........
Answer:
i reallyy wanna sayyyy 45
approximate the distance between (-6,5) and (-4, -6) to the nearest tenth
Answer:
5.1
Step-by-step explanation:
Consider this function.
h(x) = (x - 2)^2+3
Which of the following domain restrictions would enable h(x) to have an inverse function?
a. x < 1
b. x ＞5
c. x < 3
d. x > 4
(Ps: all four answer and larger equal then or smaller equal then
Answer:
No inverse function: (a), (b), (c)
Inverse function exists: (d)
Step-by-step explanation:
The graph of h(x) = (x - 2)^2 + 3 is a parabola that opens upward and has vertex at (2, 3). If the entire graph is drawn, and the horizontal line test then applied, h(x) would not have an inverse, because the horizontal line would intersect the parabolic graph twice.
Note that if we restricted the domain to x ≥ 2, the resulting graph would pass the horizontal line test. This would also be true for x ≥ 3, x ≥ 4, and so on. Not so for (a) x < 1. False for x > -5. True for x < 3. True for x > 4.
No inverse function: (a), (b), (c)
Inverse function exists: (d)
