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VLD [36.1K]
3 years ago
15

If 75 equals a number plus four times the number, find the number

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
7 0
X + 4x = 75
Combine like terms:
5x = 75
Divide by 5 on each side of the equal sign:
x = 15
Helen [10]3 years ago
4 0
75 = x + 4x
75 = 5x
75 ÷ 5 = x
15 = x'

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When a number is added to 1/5 of itself, the result is 24. The equation that models this problem is n + 1/5n = 24. What is the v
Zielflug [23.3K]
The answer is 20 since 1/5 of 20 is 4, and 20 + 4 = 24.
7 0
3 years ago
Read 2 more answers
Line MN passes through points M(4, 3) and N(7, 12). If the equation of the line is written in slope-intercept form, y = mx + b,
seropon [69]

Answer:

-9

Step-by-step explanation:

What b represents here is the y intercept.

The first thing we will do here is to find the slope.

Mathematically;

m = (y2-y1)/(x2-x1)

Plugging the values;

m = (12-3)/(7-4) = 9/3 = 3

The equation can thus be written as;

y = 3x + b

To get b, we can use any of the points since they lie on the line

Let’s use point M

Substitute the values of x and y in the equation

3 = 3(4) + b

3 = 12 + b

b = 3-12 = -9

3 0
3 years ago
Read 2 more answers
What are the intercepts to the line
Roman55 [17]
The x-intercept is 8 because it passes through the horizontal line (x) at point 8.
The y-intercept is -4 because it passes through the vertical line a (y) at point -4.
The correct answer is B.
Hope this helps!
5 0
3 years ago
PLLEASEEEE ANSWER HURRY
Galina-37 [17]
The answer is y=-8 I’m pretty sure
6 0
3 years ago
Find the equation of the line tangent to the function at the given point f(x)=5x^2 at x=10
Svet_ta [14]

f(x) = 5x²

f(10) = 5(10)²  = 5(100)  = 500

f'(x) = 10x

f'(10) = 10(10)   = 100  

Now, find the line that passes through (10, 500) and has a slope of 100

y - y₁ = m(x - x₁)

y - 500 = 100(x - 10)

y - 500 = 100x - 1000

        y = 100x - 500

8 0
3 years ago
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