i need help now ........
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Answer:

Step-by-step explanation:

21) 64=8(r+2)

Step 1: Simplify both sides of the equation.

64=8(r+2)

64=(8)(r)+(8)(2)(Distribute)

64=8r+16

Step 2: Flip the equation.

8r+16=64

Step 3: Subtract 16 from both sides.

8r+16−16=64−16

8r=48

Step 4: Divide both sides by 8.

8r

8

=

48

8

r=6

29) Step 1: Simplify both sides of the equation.

−4(r+6)=−63

(−4)(r)+(−4)(6)=−63(Distribute)

−4r+−24=−63

−4r−24=−63

Step 2: Add 24 to both sides.

−4r−24+24=−63+24

−4r=−39

Step 3: Divide both sides by -4.

and you get r= 39\4

hope that helps

Answer:  r = 6

Step-by-step explanation:

64= 8(r+2)

64/8  = 8(r+2) / 8  divide both sides by 8

    8 = r + 2       The eights cancel out

- r = 2 + 8         Move the variable to the left and change its sign

- r = - 6             to get id of the negative -r make  the 6 a positive

 r=6

-4(r + 6) = -63

- 4r - 24 = -63    Distribute 4 through ( ) -4 x4  -4 x6

-4r =63 + 24      Move -24 to the right (making it a positive )

-4r = 39

-4r / -4 = 39 /4  divide both sides by -4

r= 39/4  

Answer:

- 12x + 24

Step-by-step explanation:

Since the perimeter is 2(length) + 2(width) your equation would start out as:

2[-2(3x-1)] + 2(10x)

2[-2(3x-1)] + 20 = 2(-6x + 2) + 20

2(-6x + 2) + 20 = - 12x + 24

Hope this Helps!!! :)

Answer:

15

Step-by-step explanation:

Answer:

c) 50

Step-by-step explanation:

Exterior angles equal the sum of opposite interior angles.

x + 55 = 105

       x = 105 - 55

       x = 50

Answer:

Work backwards

Step-by-step explanation:

I took this quiz rn

Answer: The answer is Work Backwards

Step-by-step explanation: I just took the quiz and got it right

Answer: 12

Step-by-step explanation:

From the question, we are informed that Steve counts up by 4s and Jon counts up by 3s. To get the smallest number that they both say, we have to find the multiple of 3 and 4 and then choose the lowest. This will be:

Multiples of 3 = 3, 6, 9, 12, 15, 18 ...

Multiples of 4 = 4, 8, 12, 16, 20, 24 ....

We can see that the smallest is 12

Answer:

Step-by-step explanation:

4, 8 , 12 , 16, 20 , 24

3, 6 , 9 , 12, 15, 18

Answer:

25 jefes

100 oficiales

175 suboficiales

Step-by-step explanation:

Se nos dice que hay 600 soldados que está representado por una fracción de 600

Podemos obtener el número total de personas en el cuartel.

Representemos el número total de personas en el cuartel como: B

2/3 × B = 600

2B / 3 = 600

Cruz multiplicar

2B = 600 × 3

B = 1800/2

B = 900

Por lo tanto, el número total de personas en el Cuartel es de 900 personas.

De la pregunta se nos dice que:

el resto son oficiales, suboficiales y jefes.

Calcule el número total de personas en el cuartel con 1

El resto se representa como:

1 - 2/3 = 1/3

El número de jefes es 1/12 del resto

Por lo tanto,

= 1/12 de 1/3

= 1/12 × 1/3

= 1/36

El número total de personas = 900

Por tanto, el número de jefes = 1/36 × 900

= 25 jefes

Tenemos 25 jefes

El número de oficiales es cuatro veces mayor que el número de jefes.

= Número de oficiales = 4 (1/36)

= 4/36

= 1/9

El número total de personas = 900

Por lo tanto, el número de oficiales = 1/9 × 900

= 100 oficiales

Tenemos 100 oficiales

El número de suboficiales se calcula como:

900 - (600 + 25 + 100)

= 900 - 725

= 175

Answer:

The shoreline is reduced by 0.5 foot every 10 years

Step-by-step explanation:

Answer:

-189

I looked it up

Answer:

-10 and 10

Step-by-step explanation:

subtracting what is to the right of the equal sign from both sides of the equation :  x^2-10-(90)=0

step 1 - A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

(at the end of step 1 it should look like this) =  (x + 10)  •  (x - 10)

solve as many equations as there are terms in the product

any solution of term = 0 solves product = 0 as well.

Answer:

x = 5 ±√115

Step-by-step explanation:

x² - 10x - 90 = 0

You can solve for x by doing it in 2 ways: Completing the square and by using the quadratic formula

Completing the Square

(x² - 10x + 25) - 25 - 90 = 0

(x - 5)² - 115 = 0

(x - 5)² = 115

x - 5 = ±√115

x = 5 ±√115

Quadratic Formula

√460 = √4 X √115

Hence 2√115

Answer:

Decrease or decline in water level per day

Step-by-step explanation:

Given the question above ;

The situation which could be repress Ted by a negative number is the decrease in the water level of the pool being measured :

It could be expressed as - 1 1/2 inches per day

Fall, decrease, loss or reductions are usually modeled in mathematics using the negative sign as it portrays a negative adjustment or reduction in the original amount of a commodity, item or phenomenon.

Furthermore, total decline after 5 days will be ;

-1 1/2 * 5 = (-3/2 * 5) = - 15/2 = - 7.5 inches

Answer:

Yes

Step-by-step explanation:

To determine whether a relation is a function or not, we can do a vertical line test. First, get something like a ruler, put it vertical, then scan it on the relation. If the ruler hits one point of the line, then it is a function. If the ruler hits two points at once, then it is not a function. This passes the vertical line test, because when the ruler hits the relation it only hits one point at a time, making it a function. I hope this helps, I hope it's not wrong but I don't think it is.

Answer:

13 feet long

Step-by-step explanation:

Given area of a square patio is 196 square feet.

Length of each side of the patio is the same, since it is a square.

Let a be the length of the side of the square

area=a*a=196

a^2=196

a=√196

a=13 feet

Answer:

d

Step-by-step explanation:

y = -6

The line is horizontal, meaning it is zero slope, and the line is located on -6, making the equation y = -6

Answer:

wheres the graph

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The answer isn't 3. I had this question on a test and the answer was 2 and not 3!

Answer:

I am 60% sure it is line and plane.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer: It will take 1 second for the ball to reach a height of 5 meters.

Step-by-step explanation:

Given: The function [tex]h=10t-5t^2[/tex] can be used to find the height(h) of the ball in meters after t seconds.

Now, put h= 5 meters, we get

[tex]5=10t-5t^2[/tex]

[tex]\Rightarrow\ 1=2t-t^2\ \ \[\text{divide both sides by 5}]\\\\\Rightarrow\ t^2-2t+1=0\\\\\Rightarrow(t-1)^2=0\\\\\Rightarrow (t-1)=0\\\\\Rightarrow t=1[/tex]

Hence, it will take 1 second for the ball to reach a height of 5 meters.

Answer:

8

Step-by-step explanation:

3y - w

substitute y for 6 (given)

3 * 6 - w

18 - w

now substitute w for 10 ( given)

18 - w

18 - 10

8

Answer:

(1,12), (2,24), (3,36)...

Answer:

9 and 10, and it is closer to 9

Step-by-step explanation:

85 is closer to 81 than 100.

Answer:

between 9 and 10 and it is closer to 9

Step-by-step explanation:

Answer:

1.8462951e+23

Have a amazing day

Answer:

National debt would be 1,400,000,000,000 to the power of 12.

Step-by-step explanation:

Answer:

the correct one is a

Step-by-step explanation:

Answer: I think it 3/10

Step-by-step explanation:

Answer: 3/10

Step-by-step explanation:

Answer:

TUV~TRQ

SF=SAS

Step-by-step explanation:

bet