MATHEMATICS HIGH SCHOOL

Please help, thank you!

Answers

Answer 1

Answer:

Answer:

I think B

Step-by-step explanation:

Answer 2

Answer:

Answer:

A.) 0.32

Step-by-step explanation:

$√(16)$ is 4 but h = 2 which is 1/2 of the answer

so $√(40)$ is 6.324 and 0.32 is the closet answer

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4.50 to a percent form?

Answers

4.50 is 450 percent
because it is greater than 1, we know it is more than 100%

Move your decimal to the right two times and you get 450%

PLEAS EHURRY!! It’s pre-calc!!
PIECE WISE FUNCTIONS!!

Answers

Answer: 60mph

Step-by-step explanation:

For each piece of our piecewise function, we have a different range for t, so we only use the expression that has a range that our t falls into. In the first, the range is 0 ≤ t ≤ 15, so the first expression ONLY WORKS for values of t that fit in this range (13, for example). In the third, the range is 240 ≤ t ≤ 250, so the third expression ONLY WORKS for values of t from 240 to 250 (242, for example). Our t does not fit in these ranges, so we do not use the first or third expression to find our answer.

In the second, the range is 15 < t < 240, so the second expression ONLY WORKS for values that are between 15 and 240, and our t is 18, so we use the second expression to find our answer. Our expression is just 60, so our final answer is at 18 seconds, the vehicle is going 60mph.

I hope this helps! :)

Which expression is equivalent to 7a2b + 10a2b2 + 14a2b3?

Answers

The given expression can be simplified in many ways by grouping like terms. The simplest form is obtained by factoring out a²b which gives us the following expression.

a²b(7 + 10b +14b²)

Answer:

a²b(7 + 10b +14b²)

Step-by-step explanation:

$7a^2b + 10a^2b^2 + 14a^2b^3$

To find out equivalent expression we need to factor the given expression

To factor it first we find out GCF(greatest common factor)

7 a^2b -------> 7*a*a*b

10a^2b^2 ----->5*2 * a*a*b*b

14a^2b^3 -------> 7*2 *a*a*b*b*b

To get GCF we look at the factors that are in common

GCF = a*a*b that is a^2b

We factor out GCF a^2b, write a^2b outside and divide all the terms by a^2b

$a^2b(7 +10b +14b^2)$

7+10b+14b^2 cannot be factor . its prime

How long will money in savings take to double at 5% interest compounded annually? Round the answer to the nearest hundredth of a year.

Answers

For a single payment with compound interest, the equation to use is F=P(1+i)^n where F is the value after n periods, P is the present value, and i is the interest rate.

If we want the final value F to double given 5% per year interest, F=2P then i=5.

Solving for n:

2P=P(1+0.05)^n
2=(1.05)^n
log(base 1.05)2=n
n=14.206=14.21 years

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