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3 years ago

5n + 10 for n= 3 I need help with this problem please

Mathematics

2 answers:

victus00 [196]3 years ago

8 0

Answer:

N=1

Step-by-step explanation:

Move all terms containing n

to the left side of the equation.

− 3 n − 7 = − 10

Move all terms not containing n

to the right side of the equation.

− 3 n=− 3

Divide each term by −3

and simplify.

n = 1

Usimov [2.4K]3 years ago

5 0

Answer:

Step-by-step explanation:

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I need help. See picture: "Number of solutions to equations challenge"

Zanzabum

Answer:

Step-by-step explanation:

Put the values of P and Q to the equation Px - 45 = Qx + 75:

15x - 45 = 15x + 75 subtract 15x from both sides

-45 = 75 FALSE

In other cases, we get some value x.

Example:

A. P = -45 and Q = -75

-45x - 45 = -75x + 75 add 45 to both sides

-45x = -75x + 120 add 75x to both sides

25x = 120 divide both sides by 25

x = 4.8

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3 years ago

The equation y-2/3=-2(x-1/4) is written in point slope form. What is the equation in slope-intercept form ?

Soloha48 [4]

Answer:

y = -2x + 7/6

Step-by-step explanation:

y-2/3=-2(x-1/4)

Distribute the -2

y-2/3=-2x+ 2/4

y - 2/3 = -2x + 1/2

Add 2/3 to each side

y - 2/3 + 2/3 = -2x + 1/2 + 2/3

Get a common denominator

y = -2x + 3/6 + 4/6

y = -2x + 7/6

8 0

3 years ago

Read 2 more answers

What would you assume at the beginning of an indirect proof for the following?

iVinArrow [24]

I would assume that it is not a prime number as it seems to be divisible by 3.

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3 years ago

Use the scale factor to compare the perimeter and area of the original figure of the enlarged figure. Complete the statements ab

Reika [66]

Answer:

Part 1) The scale factor is 2

Part 2) The perimeter of the enlarged rectangle is 19 units

Part 3) The area of the enlarged rectangle is 19.5 square units (the area of the enlarged rectangle is 4 times the area of the original rectangle)

Step-by-step explanation:

we know that

A dilation is a non-rigid transformation that produce similar figures

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

The ratio of its perimeter is equal to the scale factor and the ratio of its areas is equal to the scale factor squared

step 1

Find the scale factor

Let

z ---> the scale factor

$z=\frac{3}{1.5}=2$

step 2

Find the perimeter of the enlarged rectangle

Multiply the perimeter of the original rectangle by the scale factor

The perimeter of the original rectangle is

$P=2(1.5+3.25)=9.5\ units$

The perimeter of the enlarged rectangle is

$9.5(2)=19\ units$

step 3

Find the area of the enlarged rectangle

Multiply the area of the original rectangle by the scale factor squared

The area of the original rectangle is

$A=(1.5)(3.25)=4.875\ units^2$

The area of the enlarged rectangle is

$4.875(2^2)=19.5\ units^2$

The area of the enlarged rectangle is 4 times the area of the original rectangle

step 4

Find the value of b

Multiply the corresponding side of the original rectangle by the scale factor

$b=3.25(2)=6.50\ units$

Verify the perimeter of the enlarged rectangle

$P=2(3+6.50)=19\ units$ ----> is ok

Verify the area of the enlarged rectangle

$A=3(6.50)=19.5\ units^2$ ---> is ok

8 0

4 years ago

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Help please anyone...

dybincka [34]

Answer:

A.) -5

Step-by-step explanation:

-3×-5 = 15 (two negatives equal a positive)

15-4 = 11 which is greater than 7

feel free to mark brainliest if this helped you :)

8 0

3 years ago