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3 years ago

5x + 12 = 4x + 6 solve for variable

Mathematics

2 answers:

san4es73 [151]3 years ago

5 0

Answer:

-6

Step-by-step explanation:

5x + 12 = 4x + 6

=> 5x - 4x = 6 - 12

=> <u>x = -6 (Ans)</u>

andrezito [222]3 years ago

5 0

Answer:

-6

Step-by-step explanation:

5x+12=4x+6

We simplify the equation to the form, which is simple to understand

5x+12=4x+6

We move all terms containing x to the left and all other terms to the right.

+5x-4x=+6-12

We simplify the left and right the side of the equation.

+1x=-6

We divide both sides of the equation by 1 to get x.

x=-6

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Sarah earned a grade of 80% on the math exam that had 75 problems. How many correct problems did Sara answer?

xenn [34]

Answer:

Step-by-step explanation:

80/100 times 75 and you will get 60

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3 years ago

David and Karen are building a treehouse in the shape of a rectangular prism for their daughter.If the treehouse is going to 5 f

Serga [27]

The space left inside the tree is 300 cubic feet.

David and Karen have to paint 275 square feet on the outside.

Explanation:

It is given that the length of the tree house is 7.5 feet

The width of the tree house is 8 feet

The height of the tree house is 5 feet

The tree house is in the shape of a rectangular prism.

The volume of the rectangular prism is given by

$\text {Volume}=\text {length } \times \text {width} \times \text {height}$

Substituting the values, we have,

$Volume$=7.5 \times 8 \times 5$\\Volume $=300$$

Thus, the volume of the rectangular prism is 300 cubic feet

Hence, the space left inside the tree is 300 cubic feet.

The area they have to paint on the outside can be determined using the formula for surface area of the prism .

$Area=2(w l+h l+h w)$

Substituting the values, we get,

$Area=2[(8*7.5)+(5*7.5)+(5*8)]$

Multiplying the terms within the bracket, we get,

$Area=2(60+37.5+40)$

Adding the terms, we have,

$Area=2 \times 137.5$

Multiplying, we get,

$Area =275$

Thus, David and Karen have to paint 275 square feet on the outside.

6 0

3 years ago

The elevation at sea level is 0 feet. Which of these cities have an elevation that is more than 75 feet away from sea level ?

Jet001 [13]

You need a picture to answer

4 0

3 years ago

Elizabeth’s aunt started a college savings account for her with $6,000. What is the balance of the account after 5 years if the

vaieri [72.5K]

Answer:

6750

Step-by-step explanation:

simple interest = P×r%×t

P = $6000

r = 2.5%

t = 5 years

I = 6000 × 2.5/100 × 5

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6000 + 750 = $6750

7 0

3 years ago

Pls help asap...urgently help needed!!!<br>tia

ziro4ka [17]

Answer:

(a) v = 1536640/ m^2.

(b) (i) 1186 m/s.

(ii) 52.4g .

Step-by-step explanation:

(a) The equation is v = k / m^2 where k is the constant of variation.

When m = 49, v = 640 so 640 = k / 49^2

k = 640 * 49^2

= 1,536,640.

Therefore the relation is v = 1536640/ m^2.

(b) (i)

When m = 36g, the speed v = 1536640 / 36^2

= 1186 m/s.

(ii) When the speed is 560 m/s :-

560 = 1536640 / m^2

m^2 = 1536640 / 560

= 2744

mass m = √2744

= 52.4g

3 0

3 years ago