MATHEMATICS
HIGH SCHOOL

Answer:

t= 2.25 secs

Step-by-step explanation:

Step 1 :

Equation for motion with uniform acceleration is v = u+ at

where v is the final velocity

u is the initial velocity

a is the acceleration due to gravity

and t is the time

Step 2 :

Here , v = 0 because at the highest point final velocity is 0.

u = 72 feet/sec

a = -32 ft/sec^2

We need to find the time t.

Substituting in the equation we have,

0 = 72 -32 * t

=> 32 t = 72

=> t = 72/32 = 2.25 secs

HIGH SCHOOL

Solve for x: −2(x + 3) = −2(x + 1) − 4. (1 point) a 2 b 3 c All real numbers d No solution

The correct answer would be

C. All Real Numbers

MIDDLE SCHOOL

How many verticies does a triangular prims have

Answer:

6 vertices for triangular prisms.

Answer:

A triangular prism has 6 vertices(corners).

Step-by-step explanation:

MIDDLE SCHOOL

What is the second step in solving the equation + 7 = 5? Add 7 to each side.

Subtract 7 from each side.

Divide each side by 3.

Multiply each side by 3.

Answer:

Multiply each side by 3

Step-by-step explanation:

The complete question is

What is the second step in solving the equation h/3 + 7 = 5?

we have

Solve for h

step 1

subtract 7 both sides

step 2

multiply by 3 both sides to isolate the variable h

therefore

The second step is

Multiply each side by 3

Answer:

it is D

Step-by-step explanation:

HIGH SCHOOL

There are 10 students participating in a spelling bee. In how many ways can the students who go first and second be chosen?

The total number of ways that the students who go first and second be chosen is; 90 ways

How to solve Permutations?We are given;

Total number of students participating; n = 10

Number of possible choices = 2

This is a permutation question and as such we will use the formula for permutation which is; nPr = n!/(n - r)!

Thus; 10P2 = 10!/(10 - 2)!

⇒ 90 ways

Read more about Permuation at; brainly.com/question/11732255

The order matters.

objects can be chosen out of objects, when the order matters, in ways.

So, the answer is ways.