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3 years ago

PLEASE HELLLLLLP!!!!!!!

2 answers:

6 0

1. B. (c-8)(c+8)
2. C. 3(2y-5)(2y+5)
3. D. 9(y-2)(y+2)
4. C. -(x-1)(x-4)
5. D. b(ab-1)

i hope this helps u out!

AVprozaik [17]3 years ago

3 0

The answers for this practice are as follows:

1. B) (x+2)(x+5)

2. C) (x-2)(x-1)

3. D) -(x+5)(x-8)

4. A) 3

5. D) 5b

6. B) (c-8)(c+8)

7. C) 3(2y-5)(2y+5)

8. D) 9(y-2)(y+2)

9. C) -(x-1)(x-4)

10. D) b(ab-1)

Just took the quiz and got all of them right

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Which values are solutions 4x greater than or equal to 35

Mamont248 [21]

Answer:

$\frac{5}{1/2}$ , 12, $\frac{8}{3/4}$ , 10

Step-by-step explanation:

$4x\geq 35$

$x \geq \frac{35}{4}$

$x \geq 8 \frac{3}{4}$

$\frac{5}{1/2}$ = 10

$\frac{8}{3/4}$ = 10.66

and 10

Because saying 5 over 1/2 is saying 5 divided by 1/2 which is the same as saying 5 * 2

8 over 3/4 is 8 divided by 3/4 which is 8 * 1.33.

A fraction is division. If you mean 5 and 1/2 as well as 8 and 3/4 then remove 5 and 1/2 from the answer.

6 0

3 years ago

The sum of the measures of angle x and y is 90. If the measures of angle x is 30 less than twice the measures of angle y what is

svp [43]

First set up your two equations:

x + y = 90

x = 2y - 30

Then substitute what x equals in the second equation into the first equation:

(2y -30) + y = 90

Now solve for y:

3y -30 = 90
3y = 120
y = 40

Then use y = 40 and substitute the value for y into one of your original equations and solve for x. I'll choose the first one, but either one will work.

x+ 40 = 90
x = 50

So your solution is x = 50 and y = 40

8 0

3 years ago

Sovle: 10 -2x = -30 Please use subsitution Show your steps to solve the equation

Margaret [11]

10 - 2x = -30
-2x = -40
2x = 40
x = 20

7 0

3 years ago

Read 2 more answers

I need help like fast i am on 3 and i do not know what to do

Elis [28]

Answer:

Number 3 has no solution

Step-by-step explanation:

First you need to divide both sides of the equation 12x - 12y = -12 by 4

-3x + 3y = -3

12x - 12y = -12

-3x + 3y = -3

3x - 3y = -3

Then you need to eliminate one variable by adding the equations.

0 = -6

this statement is false, and therefore has no solution.

7 0

3 years ago

What is the domain and range of f(x)=2.5x when x goes up to 800

Mandarinka [93]

Answer:

Domain: all real numbers. Range: (-∞, 2000]

Step-by-step explanation:

f(x)=2.5x is a simple "ramp" function, a linear function and a polynomial. As such, its domain contains "all real numbers." That value 800 defines the largest value that this f(x) can have: f(800) = 2.5(800) = 2000.

Thus, the range is "all real numbers from -∞ through and including 2000."

3 0

3 years ago