Y'all i need this to be doneee!! Don't answer this quest if you don't know what's the answer, bcoz this is DUEEE TOMORROW! Thanks!! Helpful answer/w explanation = Brainliest Answer ✅

Unhelpful answer/ Nonsense = Report (Delete)

Problem 7

Subtract 4 from both sides to get

3x^2 = 4

3x^2-4 = 0

3x^2 + 0x - 4 = 0

We see that a = 3, b = 0, c = -4

Problem 8

If you were to expand and simplify each item given, then you'll find that choices C and D involve an x^2 term, while choices A and B do not. So we can rule out choices A and B.

We can also rule out choice D since it is not an equation. Rather, it's an inequality. Therefore, only choice C is a quadratic equation.

Problem 9

Let's simplify and get everything to one side

4x(x-2) = 5

4x^2 - 8x = 5

4x^2 - 8x - 5 = 0

It's in the standard form ax^2+bx+c = 0 where

a = 4, b = -8, c = -5

Problem 10

Follow the same idea as problem 9 earlier. You'll need to use the FOIL rule.

3x + (x+5)(2x-3) = 7

3x + 2x^2 - 3x + 10x - 15 = 7

3x + 2x^2 - 3x + 10x - 15 - 7 = 0

2x^2 + 10x - 22 = 0

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.