pleaseee helppp



unit test due in 30 minss!!!

Answer:

x = -9/2  or -4.5

Step-by-step explanation:

-2x-5=4

Add 5 to each side

-2x-5+5=4+5

-2x = 9

Divide each side by -2

-2x/-2 = 9/-2

x = -9/2  or -4.5

Answer:

282

Step-by-step explanation:

47*6=282

Forty seven six times.

Answer:

Option (D)

Step-by-step explanation:

Formula to get the average rate of change of the function f(x) between two points x = a and b is,

Average rate of change = [tex]\frac{f(b)-f(a)}{b-a}[/tex]

We have to calculate the average rate of change between x = 0 and x = 2.

From the graph attached,

f(0) = -2

f(2) = 6

Therefore, average rate of change = [tex]\frac{6-(-2)}{2-0}[/tex]

                                                          = [tex]\frac{8}{2}[/tex]

                                                          = 4

Option (D) will be the correct option.

Answer:

-3.5

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

The correct options are presented as follows;

ΔABC is reflected across the y-axis to become ΔA'B'C' is rotated 90° counterclockwise about the origin to become ΔA''B''C''. Because the transformations are rigid transformations the preimage and image are congruent

Step-by-step explanation:

The coordinate of the preimage point A = (-2, 1)

The coordinate of the image point A' = (2, 1)

Similar for points B(-5, -2) and B'(5, -2), C(-3, -4) and C'(3, -4)

Which is equivalent to a reflection across the y-axis

Similarly, we have;

The coordinate of the preimage point A' = (2, 1)

The coordinate of the image point A'' = (-1, 2)

Which is equivalent to rotation of 90° counterclockwise which involves transforming a preimage (x, y) to an image (-y, x)

Similar for points B and B', C and C'

Therefore, because the reflection transformation, and the rotation transformation, are rigid transformation, the figures of the preimage and the image are congruent

Therefore, we have;

ΔABC is reflected across the y-axis to become ΔA'B'C' is rotated 90° counterclockwise about the origin to become ΔA''B''C''. Because the transformations are rigid transformations the preimage and image are congruent.

Answer:

1) 6,000 B) 800 C) 4,000

2)7,500

3)third and fourth one

4)6,951

Step-by-step explanation:

just because

Answer:

1 a. 6043=6000 b. 789=1000 c. 3911=4000

2 7341 is a possible solution

3 350  6000  7900

4 6951

Answer:

yes the answer would be 0.724

Answer:

19)  ( [tex]\frac{-2}{5}[/tex])^2 = [tex]\frac{4}{25}[/tex]

20) -[tex]9^{2}[/tex] = -81

21)  [tex]2^{4}[/tex] = 16

Step-by-step explanation:

The only wrong ones are

19)  ( [tex]\frac{-2}{5}[/tex])^2 = [tex]\frac{4}{25}[/tex]

20) -[tex]9^{2}[/tex] = -81 ... negative is not inside a parenthesis that's why it is still negative

21) you can add another way is [tex]2^{4}[/tex] = 16

Everything else looks good.  Great job!

Answer:

210

Step-by-step explanation:

Percentage Calculator

The value of the phone after 2 years will be equal to $388.8.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also represent the logical syntax's operation order and other properties.

Given that the cell phone costs $750 and loses 28% of its value each year. The value of the phone after 2 years will be,

The value of the phone after 2 years will be calculated as,

Cost of phone = 750 x ( 0.28 )²

Cost of the phone = $388.8

To know more about an expression follow

https://brainly.com/question/21538545

#SPJ2

Answer:

There's two answers.

-5, -4, and -3

3, 4, 5

Step-by-step explanation:

[tex]x^{2} +(x+1)^{2} +(x+2)^{2} =50\\x^{2} +x^{2} +2x+1+x^{2} +4x+4=50\\3x^{2} +6x+5=50\\3x^{2} +6x-45=0\\3(x^{2} +2x-15)=0\\(x+5)(x-3)=0\\x = -5\\x = 3\\[/tex]

Answer:

[tex]\huge\boxed{x=2-2\sqrt2\ \vee\ x=2+2\sqrt2}[/tex]

Step-by-step explanation:

[tex]\dfrac{x-6}{2}=\dfrac{2-x}{x}\\\\\text{Domain:}\ x\neq0\\\\\dfrac{x-6}{2}=\dfrac{2-x}{x}\qquad|\text{cross multiply}\\\\(x-6)(x)=2(2-x)\qquad|\text{use the distributive property}\\\\(x)(x)+(-6)(x)=(2)(2)+(2)(-x)\\\\x^2-6x=4-2x\qquad|\text{add}\ 2x\ \text{to both sides}\\\\x^2-6x+2x=4-2x+2x\\\\x^2-4x=4\qquad|\text{add}\ 2^2\ \text{to both sides}\\\\x^2-2\cdot x\cdot2+2^2=4+2^2\qquad|\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\(x-2)^2=4+4\\\\(x-2)^2=8\iff x-2=\pm\sqrt8\\\\x-2=\pm\sqrt{4\cdot2}[/tex]

[tex]x-2=\pm\sqrt4\cdot\sqrt2\\\\x-2=\pm2\sqrt2\qquad|\text{add 2 to both sides}\\\\x-2+2=-2\sqrt2+2\ \vee\ x-2+2=2\sqrt2+2\\\\\huge\boxed{x=2-2\sqrt2\ \vee\ x=2+2\sqrt2}[/tex]

Answer:

Step-by-step explanation:

A=  a+b/2 h (area = a +b over 2 times H) plug in your numbers

I dont have a picture, if i did i could solve it, but here is the formula

Answer:

The answer is 5 cards.

Step-by-step explanation:

Yu have to add 29 and 16 . When yu do that yu get 45 cards total. Divide 45 by 9 (friends) yu get 5 cards per person.

Answer:

ghvucycygifud5duvufysyvkcyxhvucydycibkx

Step-by-step explanation:

huh gg xtdy"#gicyfufucyxyhhjv ycyf cyst

Answer:

the answer is 3×2+2

Step-by-step explanation:

3x2=9+2=11

Answer:

n=28

Step-by-step explanation:

Do I have to explain how i got the answer?

Answer:

4n=112

n=112/4

n=28

Step-by-step explanation:

Please give me brainliest, if I helped you

Answer:

$760 earned in intrest

$10260 new account balance

Step-by-step explanation:

First we have to find 4% of 9500

use the formuala

[tex]\frac{4}{100} =\frac{x}{9500}[/tex]

4×9500=38000

38000÷100=380

now 380×2=760

add 760 to 9500 for new account balance

Answer:

I HATE MATH TeeHee

Step-by-step explanation:

i actually hate it-

ED GE NU IT Y PE OP LE

Answer:

Step-by-step explanation:

Step one:

we are told that their joint amount is $62

let John's amount be x

and Pedro's amount be y

so that y=x+15

Step two:

The equation to represent the situation is

62=x+(x+15)

open the bracket and solve for x we have

62=x+x+15

62=2x+15

2x=62-15

2x=47

divide both sides by 2

x=47/2

x=23.5

John has $23.5

Answer:

the 4th one

Step-by-step explanation:

Answer:

0.22 miles

Step-by-step explanation:

Let

A = Distance pumpkin A travels = 0.61 miles

Distance pumpkin B travels is 0.28 mile farther than Pumpkin A

[tex]B=0.28+A\\\Rightarrow B=0.28+0.61\\\Rightarrow B=0.89\ \text{miles}[/tex]

Distance pumpkin B travels is 0.06 miles further than pumpkin C

[tex]B=0.06+C\\\Rightarrow C=B-0.06\\\Rightarrow C=0.89-0.06\\\Rightarrow C=0.83\ \text{miles}[/tex]

To calculate how much farther pumpkin C travels than pumpkin A we have the subtract their distances

[tex]C-A=0.83-0.61=0.22\ \text{miles}[/tex]

So, pumpkin C traveled 0.22 miles more than pumpkin A.

Answer:

p = 3/2

Step-by-step explanation:

Answer:

V≈6795.2in³

Step-by-step explanation:

I think

Answer:

6795.2

Step-by-step explanation:

i got it right

Answer:

Thanks!

Step-by-step explanation:

I already have it on my phone tho lol

Answer:

3/20

Step-by-step explanation:

just like the other person said

1/2 is the largest because it is 0.500

3/8 is the second largest because it is 0.375 and

3/20 is the smallest because it is 0.150

Have a nice day

Answer:

7.78

Step-by-step explanation:

Answer:

The answer is 7.78

Step-by-step explanation:

I had this on a test and got it correct

MARK THE BRAINLIEST PLEASEEE

Answer: $7.50

Step-by-step explanation: they spent 15 n if they split that it’s 7.50

Answer:

c. y=7x-2

Step-by-step explanation:

hope this can help

Answer:

B

Step-by-step explanation:

f(x)=x (slope is 1, y-intercept is zero)

g(x) = (1/3)x (slope is (1/3), y-intercept is zero)

(1/3)x = (1/3)f(x)

Answer:

B

Step-by-step explanation:

as u notice the slop of f function is higher than g function so g(x) is approximately one third of function f and there are no shifts in g(×) so no need for sum of subtract .