Someone please help me : evaluate 3st to the second power + 2s if s=5 and t=3??

Answers

Answer 1

Answer: $s=5\ \ \ and\ \ \ t=3\n\n\Rightarrow\ \ \ 3st^2 + 2s=3\cdot 5\cdot3^2+2\cdot5=15\cdot9+10=135+10=145$

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Use the substitution method to solve the system of equation.choose the correct ordered pair. 2x+3y=29
x=4

Answers

I’m not sure if the 2 is counted in the equation or not

Since x=4, substitute it for x in the other equation

4+3y=29
3y=25
Y=8.333333333

2(4)+3y=29
8+3y=29
3y=37
y=12.33333333

Mrs. Stephens drove through a total of 36 intersections on her way home. At 4 of every 16 intersections, she had to stop for a red light before she could drive through. At how many intersections did she have to stop for a red light?Pls Show Your Work

Answers

total intersections=36
since out of every 16 intersections, 4 had a red light. this means out of 36, 8 had red lights. So, she had to stop at 8 intersections.

mutiply 4 and 16 to get 60 then subtract 36 and 60

A grocery store sells 12 bottles of water for $13.80. A convenience store sells ten bottles of water for $11.80.Which store has the better buy

Answers

for this you have to divide the number of bottles by the price. so divide 12 by 13.08 and 10 by 11.80

the store that sells 12 bottles for 13.80

Compare the pair of fractions. Use . start fraction 3 over 4 end fraction___negative Start Fraction 5 over 6 End Fraction A. C. =HELP PLEEEEEAAASSSSEEEE

Answers

Answer:

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Step-by-step explanation:

What grade is this in so I can answer correctly?

What is 28- 12.5% decrease???

Answers

ok so I assume
28 and decreased by 12.5%

percent means partst out of 100 so
12.5%=12.5/100=0.125
first find 12.5% of 28 then subtract
0.125 times 28=3.5
decrease
28-3.5=24.5

answer is 24.5

What is the percent of 5/9

Answers

To write a fraction as a percent, first remember that a percent is a ratio of a number to 100. If we wanted to write $(5)/(9)$ as a percent, we need to find a fraction equivalent to $(5)/(9)$ with a 100 in the denominator of the fraction. We can do this by setting up a proportion.

$(5)/(9)$ = $(n)/(100)$

Now, we can use cross products to find the missing value.

9n = 500

÷9 ÷9

n = 55.6

Therefore, 5/9 can be written as 55.6%.

There are 55.56% of the percent of 5/9.

Since, A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

To Calculate the percent of a number , divide the number by whole number and multiply by 100.

We have to given that;

To find the percent of 5/9.

Let us assume that,

the percent of 5/9 is, x

Hence, We can formulate;

⇒ 5/9 = x%

⇒ 5/9 = x / 100

⇒ x = 500/9

⇒ x = 55.56%

Thus, There are 55.56% of the percent of 5/9.

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