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3 years ago

Write the verbal phrase as an algebraic expression. use x for the variable in your expression.

Mathematics

1 answer:

devlian [24]3 years ago

3 0

The answers are
1. x-10
2. x+8

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I need help 20 points!

inna [77]

Answer:

192 cm3

Step-by-step explanation:

The volume of any pyramid is 1/3 × b × h, where b = area of base of the pyramid and h = height of the pyramid.

In this case, the dimensions for the base are 6 and 8.
The height is 24

Area of Base:

$\frac{6*8}{2}$
$48/2$
$24$

Now, we multiply 24 by 24.

$24*24$
$576$

Lastly, we divide by 3.

$576/3$
$192$

Therefore, the answer is 192 cm^3.

6 0

2 years ago

Two mechanics worked on a car. The first mechanic worked for 15 hours, and the second mechanic worked for 5 hours. Together they

GrogVix [38]

You have to make a equation like 15m+5m=1800 and substitute m for 150 (m for dollars per hour. or whatever letter you want) and solve from there

7 0

3 years ago

HELPPPP which value is equal to 2✓28-5✓63? a-37✓7 b-✓7 c-11✓7 d✓7

IrinaVladis [17]

Answer:

Step-by-step explanation:

if I understand this right, then the expression is

2×sqrt(28) - 5×sqrt(63)

let's look for squared factors in the numbers under the square roots.

28 = 4×7 (4 is a squared number)

63 = 9×7 (9 is a squared number)

so,

2×sqrt(4×7) - 5×sqrt(9×7) =

= 2×2×sqrt(7) - 5×3×sqrt(7) = 4×sqrt(7) - 15×sqrt(7) =

= (4 - 15)×sqrt(7) = -11×sqrt(7)

7 0

1 year ago

What’s the correct answer for this question?

julsineya [31]

Answer:

$\frac{11}{24}$

8 0

3 years ago

Read 2 more answers

Solving Square Roots Worksheet (x - k)^2 : Part 1

iVinArrow [24]

Answer:

1. x = +/- 2 $\sqrt{2}$ - 7

2. x = $3$ +/- $2i\sqrt{3}$

3. n = $2$ +/- $i\sqrt{2}$

Step-by-step explanation:

1. Divide both sides by 2: (x + 7)^2 = 8

Square root both sides: x + 7 = +/- 2 $\sqrt{2}$

Subtract 7 from both sides: x = +/- 2 $\sqrt{2}$ - 7

2. Square root both sides: x - 3 = $\sqrt{-12}$

Since there is a negative inside the radical, we need to have an imaginary number: $i=\sqrt{-1}$ . So, $\sqrt{-12} =i\sqrt{12} =2i\sqrt{3}$

Add 3 to both sides: x = $3$ +/- $2i\sqrt{3}$

3. Divide by -5 from both sides: (n - 2)^2 = -2

Square root both sides: n - 2 = $\sqrt{-2}$

Again, we have to use i: $n-2=\sqrt{-2} =i\sqrt{2}$

Add 2 to both sides: n = $2$ +/- $i\sqrt{2}$

Hope this helps!

8 0

3 years ago

Read 2 more answers