5. (01.03 MC)

Which of the following is a step in simplifying the expression
? (5 points)

Answer:

x=45

Step-by-step explanation:

You should follow the formula:

3x+3x+x+x=360

8x=360

x=45

Answer:

First one is 3 and I got no idea what the second one is.

Answer: 3, -3 (Don't mind this part, I am just taking up letter characters)

Answer:

Dimes = x = 52

Nickels = y = 39

Step-by-step explanation:

Let

Dimes = x

Nickels = y

x + y = 91 (1)

0.10x + 0.05y = 7.15 (2)

From (1)

x = 91 - y

Substitute x = 91 - y into (2)

0.10x + 0.05y = 7.15

0.10(91 - y) + 0.05y = 7.15

9.10 - 0.10y + 0.05y = 7.15

- 0.10y + 0.05y = 7.15 - 9.10

-0.05y = -1.95

y = -1.95 / 0.05

= 39

Substitute y = 39 into (1)

x + y = 91

x + 39 = 91

x = 91 - 39

x = 52

Dimes = x = 52

Nickels = y = 39

Answer:

answerrrrrrrrrrrrrrrrrrr is 136

Answer:

136

Step-by-step explanation:

its basically easy if you can get it ill help you if you need anything else just post ill help you out have a nice day.

Answer:

26 is your answer. I hope this helps!

Step-by-step explanation:

Answer:

A number that has a greater absolute value then -10 is -15

Step-by-step explanation:

the absolute value basically means to make the negative number a positive.

Answer:

14dm

Step-by-step explanation:

To solve this question we can use the Pythogorean theorem

a^2 + b^2 = c^2

In this case, The ladder is the hypotenuse, the height is one of the leg of the right angle triangle

Let's keep the missing side as x

If we apply the theorem,

x^2 + 48^2 = 50^2

x^2 + 2304 = 2500

x^2 = 2500 - 2304

x^2 = 196

[tex]x = \sqrt{196} \\ x = 14[/tex]

Answer:

the fourth one

Step-by-step explanation:

y-intercept is when x equals 0

Answer:

1/2 or 0.5 (same value, different form)

Step-by-step explanation:

Ok...since I can't actually graph it, we can make a table out of it....

x      y

7     -1

9      0

From -1 to 0, we add 1 (this is for the y section)

From 7 to 9, we add 2 (this is for the x section)

Now all we have to do is divide the y with the x

y/x = 1/2

The slope will be 1/2 (fraction form) 0.5 (decimal form)

Hope this helped!

Answer:

9 books

Step-by-step explanation:

78=b(6)+c(4)

78=9(6)+6(4)

78=54+24

78=78-True

As per linear equation, Cindy bought 9 books online.

"A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation.

The standard form of a linear equation in one variable is of the form Ax + B = 0. Here, x is a variable, A is a coefficient and B is constant. The standard form of a linear equation in two variables is of the form Ax + By = C. Here, x and y are variables, A and B are coefficients and C is a constant."

Given, Cindy was buying books ($6 each) and candles ($4 each).

She bought 15 items and spent $78.

Let, she bought 'x' books.

Therefore, she bought (15 - x) candles.

Now, the cost of the total 15 items is

= $[6x + 4(15 - x)]

= $[6x + 60 - 4x]

= $[2x + 60]

Therefore, 2x + 60 = 78

⇒ 2x = 78 - 60

⇒ 2x = 18

⇒ x = 9

Therefore, Cindy bought 9 books.

Learn more about a linear equations here: https://brainly.com/question/11897796

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Answer:

i think the answer is 5

Step-by-step explanation:

Answer:

Im pretty sure its 4 divided by (4/5 wrong)

Step-by-step explanation:

Answer:

4/5 ÷ 1.5  (C)

Step-by-step explanation:

4 sections out of 5 are shaded, this represents 4/5

1 section not shaded represents 1/5

4/5 ÷ 1/5   is the same as 4/5 · 5/1  which equals 4 (the amount shaded)

Answer:

Step-by-step explanation:

one rectangle has the area, A₁=LxW and,

perimeter P₁=2L+2W

the second rectangle has the area A₂=2L x W,

and perimeter P₂=2(2L)x2W= 4Lx2W

the second area doubles compared to the first area

the perimeter gets increased with double the length

Answer:

[tex]3 \frac{3}{5}[/tex] or [tex]\frac{18}{5}[/tex]

in decimal form it is 3.6

Step-by-step explanation:

6(3/5) = 6/1 times 3/5

= 18/5 or 3 3/5

Answer:

3/5 * 6 = 3.6

Answer:

y = 1/4x + 5

Step-by-step explanation:

Answer:

y = 1/4x + 5

Step-by-step explanation:

We need to write the equation in slope-intercept form [ y = mx + b ] where m = slope and b = y-intercept. We are given a slope of 1.4 and y-intercept of 5, so fill it into the formula.

y = 1/4x + 5

Best of Luck!

Answer:

10,5,35

Step-by-step explanation:

20% of 50=

0.2 x 50=

10

so 10 students have black hair

10% of 50=

0.1 x 50=

5

so 5 students have blonde hair

70% of 50=

0.7 x 50=

35

so 35 students have brown hair

Answer:

1.) The answer is b = 6

2.) The answer is t = 10

Step-by-step explanation:

For the first equation in order to fin out the answer we do.....

b + 8 = 14

b + 8 - 8 = 14 - 8

b = 6

For the second question we do....

25 - t = 15

25 - t + t = 15 + t

25 = 15 + t

25 - 15 = 15 + t -15

10 = t

Answer:

=>12-2

=> 10

You're Welcome

Hope this helps you.

Answer:

f’(x) = x -2/7

Step-by-step explanation:

Let f(x)= y

Thus;

y = x + 2/7

x = y-2/7

So the inverse f’(x) = x - 2/7

Answer:

[see below]

Step-by-step explanation:

Assuming that the equation is y = 10x + 1

(12, 4)

4 = 10(12) + 1

4 = 120 + 1

4 ≠ 121

(12, 4) is not a solution.

(1, 1.5)

1.5 = 10(1) + 1

1.5 = 10 + 1

1.5 ≠ 1

They are not solutions to the equation.

Hope this helps.

Answer:

bath

Step-by-step explanation:

Answer:

30.12-215

Step-by-step explanation:

We get the value  22.14 - 593.42 for the given expression 31/7(5-56-78)

An expression is combination of variables, numbers and operators.

The given expression is 31/7(5-56-78)

Thirty one divided by seven times of five minus fifty six minus seventy eight

31/7(5-56-78)

31/7(5-134)

Thirty one by seven times of five minus one hundred thirty four.

31/7(5)-31/7(134)

155/7-4154/7

22.14 - 593.42

Hence, we get the expression 22.14 - 593.42 for the given expression 31/7(5-56-78)

To learn more on Expressions click:

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Answer:

30

Step-by-step explanation:

let 'n' = a number

[tex]\frac{2n}{3}[/tex] - 9 = 11

2n = 20

3

cross-multiply:  2n = 60

                          n = 30

Answer:

The roots are [tex]x=\dfrac{-7+ \sqrt{97}}{2}\text{ and }x=\dfrac{-7- \sqrt{97}}{2}[/tex].

Step-by-step explanation:

Consider the provided equation.

[tex]2(6 - x) = x(x + 5)[/tex]

Remove the parenthesis and simplify.

[tex]12-2 x= x^2 + 5x[/tex]

[tex]x^2+7x-12=0[/tex]

Now use the quadratic formula [tex]x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex].

Susbtitute a=1, b=7 and c=-12 in above formula.

[tex]x=\dfrac{-7\pm \sqrt{7^2-4(1)(-12)}}{2(1)}[/tex]

[tex]x=\dfrac{-7\pm \sqrt{49+48}}{2}[/tex]

[tex]x=\dfrac{-7\pm \sqrt{97}}{2}[/tex]

Hence, the roots are [tex]x=\dfrac{-7+ \sqrt{97}}{2}\text{ and }x=\dfrac{-7- \sqrt{97}}{2}[/tex].

Answer:

b = -3/4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define

-6 = b8

Step 2: Solve for b

Step 3: Check

Plug in b into the original equation to verify it's a solution.

Here we see that -6 does indeed equal -6.

∴ b = -3/4 is the solution to the equation.

Answer:

The wound in the heel took a long time to heal.

Answer:

10.5 meters

Step-by-step explanation:

in their starting position all three dancers form a right triangle with legs equal to 2m and 4m.

Jada to Ken = 4m

From Ken's position to Trisha's, Jada goes another 2[tex]\sqrt{5}[/tex]m*

From Trisha's position to her original position, Jada goes another 2m

* to get this value: 2² + 4² = x²

x² = √20 = 2√5

Answer: 10 cups of sugar

Step-by-step explanation:

Cups of sugar : Cups of flour

                    2 : 3

                    ? : 15

Cross multiply

3? = 15 × 2

3? = 30

Divide both sides by 3

? = 10

He needs 10 cups of sugar.