Math equations that equal 31

Answer:

8

Step-by-step explanation:

The minus turns the base upside down

(1/4)^-3/2 = 4^(3/2)

The square root of 4 is 2

2^3 = 8

So the answer is 8.

Answer:

-1

Step-by-step explanation:

[tex](a + b)^{3} = {a}^{3} + {b}^{3} + 3ab(a + b) \\ ( - 1)^{3} = {a}^{3} + {b}^{3} + 3ab( - 1) \\ - 1 = {a}^{3} + {b}^{3} - 3ab\\ \\ \huge \red{ \boxed{{a}^{3} + {b}^{3} - 3ab = - 1}}[/tex]

Answer:

-/x/ = -3 (Sorry I couldn't put the lines)

Step-by-step explanation:

Negative and a negative = a positive

I hope this helps you :)

Answer:

   down 7 1/4 feet

Step-by-step explanation:

4 1/2 + 2 3/4 = 4 2/4 + 2 3/4 = (4+2) +(2/4 +3/4) = 6 +5/4 = 7 1/4

The dolphin is 7 1/4 feet below the surface.

Answer:

Step-by-step explanation:

Answer:

Solution:

f(5)=2×5+7

=10+7

=17

Answer:

[tex]f(5)=17[/tex]

Step-by-step explanation:

[tex]f(5)=2(5)+7\\f(5)=10+7\\f(5)=17[/tex]

Answer:

s = 4

Step-by-step explanation:

Given: 3r = 10+5s

Fill in r: 3(10) = 10 + 5s

Multiply: 30=10+5s

Subtract: 30-10=5s

Divide: 20/5=s

Answer: 4=s

2(5x - 4)

Perimeter formula

P = 2l + 2w

P = 2(3x - 5) + 2(2x + 1)

= 6x - 10 + 4x + 2

= 10x - 8

= 2(5x - 4)

Answer:

x = 6

Step-by-step explanation:

2(4x - 3) = 3(x + 8)

1. Distribute the 2 and 3 into the parentheses.

2(4x) + 2(-3) = 3(x) + 3(8)

= 8x - 6 = 3x + 24

2. Subtract 3x from both sides.

8x - 3x - 6 = 3x - 3x + 24

= 5x - 6 = 24

3. Add 6 on both sides.

5x - 6 + 6 = 24 + 6

5x = 30

4. Divide by 5.

5x ÷ 5 = 30 ÷ 5

x = 6

Hope that helps.

Answer:

x > -2

Step-by-step explanation:

-3x+2<8

Subtract 2 from each side

-3x+2-2<8-2

-3x<6

Divide each side by -3, remembering to flip the inequality

-3x/-3 > 6/-3

x > -2

Hey there!☺

[tex]Answer:\boxed{x>-2}[/tex]

[tex]Explanation:[/tex]

[tex]-3x+2<8[/tex]

Let's subtract 2 from both sides of the inequality.

[tex]-3x+2-2<8-2\\-3x<6[/tex]

Now divide both sides by -3.

[tex]\frac{-3x}{-3}<\frac{6}{-3}[/tex]

Simplify 6/-3. Also remember that dividing a positive with a negative will give us a negative.

[tex]6/-3=-2[/tex]

[tex]x>-2[/tex]

Hope this helps!

Answer:

Alicia is right, 11 is the answer

Step-by-step explanation:

ItS EaSy

Answer:

it is eleven I think first add 12 plus 3 then subtract 3 u get eleven so Alicia is right ✅

Answer:

Let me figure it out first then I will give you the answer.

Answer:24 xexponet 3 − 5

Step-by-step explanation:

Answer:

who knows what is the whole question

Step-by-step explanation:

Answer:

The equation is true

Step-by-step explanation:

First, input -4 instead of m in the equation:

5(-4 - 1) = -25

Then, distribute:

-20 - 5 = -25

Finally, simplify:

-25 = -25

This equation is true, and that's how you prove it.

Hope this helps!

Answer:

M= -4

Step-by-step explanation:

1. Distribute the 5 into the parentheses

5m-5=-25

2. Now add 5 on both sides

5m=-20

3. Now divide 5 by -20

m=-4

Step-by-step explanation:

[tex]y = ax + b \\ a = \frac{y1 - y2}{x1 - x2} = 3 \\ y = 3x - 1 \\ y = (3 \times 4) - 1 = 11 = k[/tex]

Answer:

lim(x---->0) = -5

Step-by-step explanation:

first: sin(x-π/2)= -cosx

so the equation will be :

lim(x---->0) = [-6cos(ax)-1}/cosx

solve :

lim(x---->0) =  [-(6cos(a(0))-1}/cos(0)

cos0=1

lim(x---->0)=(-(6(1)-1)/1

lim(x---->0)=-6+1/1

lim(x---->0)=-5

Answer:

C. x≥−32

Step-by-step explanation:

Multiply both sides by 4

Answer:

C, you have to multiple both sides. Let me know if you need it explained further.

Step-by-step explanation:

Answer:

Midpoint = (4,4.5) or written as fraction (4,[tex]\frac{9}{2}[/tex])

Step-by-step explanation:

[tex]MP= (\frac{x_1+x_2}{2}),(\frac{y_1+y_2}{2} ) \\MP= (\frac{8+0}{2}),(\frac{6+3}{2} ) \\MP= (\frac{8}{2}),(\frac{9}{2} ) \\MP= (4,4.5)[/tex]

Answer:

the answer is 0.5, or about 50%

Step-by-step explanation:

If 8 slices are being take out of 16, divide the taken pieces by the total pieces, and it would be half or 0.5.

Hope this helps

Answer: 0.5

Step-by-step explanation: because if the pizza is 8 slices that would be the half of the original number of slices it was, so therefore, it would be rounded to 0.5, or 50%- half the pizza

Answer:

5/8 =x

Step-by-step explanation:

9=8/5(x+5) ​

Multiply each side by 5

5* 9=5*8/5(x+5) ​

45 = 8(x+5)

Distribute

45 = 8x+40

Subtract 40 from each side

45-40 = 8x+40-40

5 = 8x

Divide each side by 8

5/8 = 8x/8

5/8 =x

Answer:

w = -4

Step-by-step explanation:

w - 2 + 2w = 6 + 5w

Add 2 to both sides.

w + 2w = 8 + 5w

Subtract w from each side.

2w = 8 + 4w

Subtract 4w from each side.

-2w = 8

Divide.

w = -4

Answer:

x² - 30 + 5x

Step-by-step explanation:

(x + 5)(x − 5)

=x(x − 5)+5(x − 5)

=x² - 5 + 5x - 25

=x² - 30 + 5x

Answer:

Step-by-step explanation:

In this exercise, we are going to be converting from cm to m, since we are asked to provide our answers in meters

Given that the scale is  1.0 cm = 4.5 m

let us convert the 10cm to the actual length

1 cm------4.5m

10 cm------x

x= 4.5*10

x= 45m

Also for the 5 cm

1 cm------4.5m

5 cm------x

x= 5*10

x= 50m

Hence the area of the actual rectangular park is

45*50= 2250m^2

Answer:

Option B (second one to the right)

Step-by-step explanation:

Solving this equation:

-1/2(30)= -15

-1/2 x 30 = -15

(2 days = 1 inch lost)

Answer:

4×102 +5×101 +6×100 +8 × 10-1 +1 × 10-2

I hope that made sense lol

Answer:

400 + 50 + 6 + 0.8 + 0.01

Step-by-step explanation:

This is the answer because:

1) Expanded form means to write a number with its full value. It is shown as a sum of each digit multiplied by its matching place value

2) Therefore, the answer is 400 + 50 + 6 + 0.8 + 0.01

Hope this helps!

Answer:

-1/8

Step-by-step explanation:

1) -12 - 8 = -20

2) -20 = 5/2x

3) (-20)(2x) = 5

4) -40x = 5

5) x = -5/40 = -1/8

Hope this helps!

Step-by-step explanation:

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