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pychu [463]
3 years ago
8

Solve the following equation. Then place the correct number in the box provided. 3x/7-2=15

Mathematics
1 answer:
seraphim [82]3 years ago
5 0
3x/7-2=15

3x/7 = 17

3x = 119

x = 39.67
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There are 44 students going to see a movie. Each row holds 8 people. How many rows do they fill up?
melomori [17]

Answer:

5.5 or 5 1/2

Step-by-step explanation:

44 students ÷ 8 rows = 5.5

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3 years ago
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What is 9+10 x 2x4!?
liraira [26]
The answer is 152 because 9+10 is 19 and 2x4 is 8 so 19 x8 is 152
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4 years ago
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phillip bought 12 used cds and dvds.cds cost $2 each,and dvds cost $3 each.he spent $31,not including tax.how many dvds did phil
inessss [21]
Let c and d be the number of cds and dvds respectively.

c+d=12

c=12-d

The we are told that:

2c+3d=31, using c found above in this equation gives you:

2(12-d)+3d=31

24-2d+3d=31  

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So Phillip bought 7 dvds.

check...

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8 0
3 years ago
The slope of the line that passes through the points (-2, -3) and (8, -3) is....
andre [41]

Answer:

<h2>Zero</h2>

Step-by-step explanation:

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\left(x_1,\:y_1\right)=\left(-2,\:-3\right),\:\\\left(x_2,\:y_2\right)=\left(8,\:-3\right)\\\\m=\frac{-3-\left(-3\right)}{8-\left(-2\right)}\\\\m=0

8 0
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Brainliest and points !! ANSWER ASAP !!
Igoryamba

Answer:

Step-by-step explanation:

The sum of the ages of a Mother and her son is 78 , three years ago the mother is five times as old as the son, what is their present ages?

To solve this , let the age of the mother be x and the age of the son be y , from the first statement :

x + y = 78

Three years ago , the mother will be x- 3 and the son will be y - 3 , from the second statement:

x - 3 = 5 ( y-3)

x- 3 = 5y - 15

x - 5y = -12

The resulting equations are

x + y = 78

x - 5y = -12

This is called a simultaneous linear equation , that means it is a linear equation.

The side of a square is xcm , if the difference between the area and the perimeter is 12 , find the legth of its side.

Interpretation:

The formula for the area of a square is l^{2} and the perimeter is 4l , from the question , we have

x^{2} - 4x = 12

This is not a linear equation , it is simply a quadratic equation , so the situation is non linear

5 0
4 years ago
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