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Nastasia [14]
3 years ago
10

PLEASE HELP PLEASE HELP YOU WILL GET 100 POINTS PLEASE HELP PLEASE HELP YOU WILL GET 100 POINTS PLEASE HELP YOU WILL GET 100 POI

NTS

Mathematics
2 answers:
Lena [83]3 years ago
8 0

Answer:

Solution given:

f(x)=4x+1

f(-1)=-4+1=-3

f(1)=3+1=5

f(3)=4×3+1=13

f(5)=4×5+1=21

alina1380 [7]3 years ago
5 0

Answer:

\Large \boxed{-3, \ 5,\ 13,\ 21}

Step-by-step explanation:

A function is given

f\left(x\right)=4x+1

Plug values of x and evaluate

f\left(x\right)=4\left(-1\right)+1=-3

f\left(x\right)=4\left(1\right)+1=5

f\left(x\right)=4\left(3\right)+1=13

f\left(x\right)=4\left(5\right)+1=21

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Hace 10 años la edad de mi hijo era 1\7 de la del padre.Actualmente sus edades suman 52 años .¿cual es la edad del hijo?
Firdavs [7]

Answer:

Son's age is 14 and father's age is 38

Step-by-step explanation:

The question in English is

Ten years ago my son's age was 1\7 of the father's. Now his ages add up to 52. What is the son's age?

Let

x -----> son's age

y ---->  father's age

we know that

x-10=\frac{1}{7}(y-10) ------> equation A

x+y=52 -----> equation B

Solve the system by graphing

Remember that the solution of the system is the intersection point both graphs

The solution is the point (14,38)

see the attached figure

therefore

son's age is 14 and father's age is 38

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Shalnov [3]
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Find the value of B - A if the graph of Ax + By = 3 passes through the point (-7, 2), and is parallel to the graph x + 3y = -5.
Elena-2011 [213]

Answer:

B - A = -6

Step-by-step explanation:

Given

Point: (-7,2)

x + 3y = -5

Required

Find B- - A in Ax + By = 3

To start with; we need to calculate the slope of x + 3y = -5

x + 3y = -5

Subtract x from both sides

x - x + 3y = -5 - x

3y = -5 - x

Divide both sides by 3

\frac{3y}{3} = -\frac{5}{3} - \frac{x}{3}

y = -\frac{5}{3} - \frac{x}{3}

The slope of the line is the coefficient of x

Slope = - \frac{1}{3}

The question says line Ax + By = 3 is parallel to line x + 3y = -5; This means that they have the same slope of - \frac{1}{3}

Having calculated the slope, next is to calculate the equation of the line using the following formula;

m = \frac{y - y_1}{x - x_1}

Where m is the slope; m = - \frac{1}{3}; (x_1, y_1) = (-7,2)

Substitute these values in the formula above; the formula becomes

-\frac{1}{3} = \frac{y - 2}{x - -7}

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Cross Multiply

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Open brackets

-x - 7 = 3y - 6

Add x to both sides

x - x - 7 = 3y - 6 + x

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Add 6 to both sides

-7 + 6 = 3y -6 + 6 + x

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Multipby both sides by -3

-3(-1) = -3(3y + x)

3 = -9y - 3x

-9y - 3x = 3

-3x - 9y = 3

Comparing the above to Ax + By = 3

Ax = -3x\\A = -3

By = -9y\\B = -9

B - A = -9 - (-3)

B - A = -9 + 3

B - A = -6

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