MATHEMATICS HIGH SCHOOL

Can someone help me with 7-9

Answers

Answer 1

Answer:

Answer:

Warning:

I think that these are correct, but don't make this your official source :)

7. B

8. D

9. B

I hope this helps :)

Related Questions

Given the function f(x) = x2 and k = –3, which of the following represents a vertical shift? A. f(x) + kB. kf(x) C. f(x + k) D. f(kx)
A sphere has a diameter of 12 ft. what is the volume of the sphere? give the exact value in terms of .
The diameter of a circle has endpoints whose coordinates are R(-2, 2) and S(4, 2). what is the length of the radius?
What is pie time 4 times 10
Find the measure of angle A

Can someone please help me with this math question PLEASE HELP THIS IS URGENT

Answers

Answer:

(- 1, 4 )

Step-by-step explanation:

x = 1 is a vertical line passing through all points with an x- coordinate of 1

The point P(3, 4) is to units to the right of x = 1.

Hence the refection will be 2 units to the left of x = 1

P' = (1 - 2, 4 ) = (- 1, 4 )

Identify the number of solutions or zeros

2x^2+5x-9=0

Answers

There are going to be two solutions because the "biggest" x is x^2 but you can factor to find what they actually are.

Final answer:

The quadratic equation 2x^2+5x-9 = 0 has two solutions or zeros, which may be real or complex. They can be found using the quadratic formula: x = [-5 + sqrt(97)]/4 and x = [-5 - sqrt(97)]/4.

Explanation:

The equation given is 2x^2+5x-9=0, which is a quadratic equation. The solutions or zeros of a quadratic equation can be found using the quadratic formula: x = [-b ± sqrt(b^2 - 4ac)]/2a. Here, a=2, b=5, and c=-9.

Let's substitute these values into the formula:

x = [-(5) ± sqrt((5)^2 - 4*2*(-9))]/2*2

x = [-5 ± sqrt(25 + 72)]/4

x = [-5 ± sqrt(97)]/4

Therefore, this equation has "two solutions" or zeros, which are x = [-5 + sqrt(97)]/4 and x = [-5 - sqrt(97)]/4.

Learn more about Quadratic Equations here:

brainly.com/question/30098550

#SPJ2

Adam wants to buy a video game system that costs $100.00. He has $28.35 in one piggy bank and $31.90 in another piggy bank. How much more money does Adam need before he can buy the video game system? How can estimation be used to make sure the answer is reasonable?

A.
Answer: Adam needs $160.25 more.
Estimation: $28 + $32 = $60.
$100 + $60 = $160.
Adam needs about $160 more to buy his video game system.

B.
Answer: Adam needs $39.75 more.
Estimation: $28 + $32 = $60.
$100 – $60 = $40.
Adam needs about $40 more to buy his video game system.

C.
Answer: Adam needs $30.13 more.
Estimation: $28 + $32 = $60.
$60 ÷ 2 = $30.
Adam needs about $30 more to buy his video game system.

Answers

Since we want to know how much more he needs out of the total, we must do subtraction. Since the only subtraction one is C, The answer is C.

Jack has a 35-foot ladder leaning against the side of his house. If the bottom of the ladder is 21 feet away from his house, how many feet above the ground does the ladder touch the house?

Answers

Answer:

The distance above the ground does the ladder touch the house x = 28 ft

Step-by-step explanation:

Given data

Length of the ladder = AC = 35 ft

BC = 21 ft

AB = x = distance above the ground does the ladder touch the house

From Δ ABC

$AC^(2) = AB^(2) + BC^(2)$

$35^(2) = x^(2) + 21^(2)$

$x^(2) = 784$

x = 28 ft

Therefore the distance above the ground does the ladder touch the house is x = 28 ft

Answer: the answer would be 28 ft

Which of the following is not a property of mathematical proofs?

Answers

There are no properties of mathematical proofs
on the list of choices that you have offered.

A 15 foot ladder is leaning against a wall. The foot of the ladder is 7 feet from the wall. How high up the wall is the ladder? Round to the nearest tenth if necessary.