I need help on math ASAP!!

Answer:

$9 per hour

Step-by-step explanation:

First, divide her total by 20 to find how much she got per night:

360/20

= 18

Then, divide this by 2 to find her hourly rate, since she worked 2 hours a night:

18/2

= 9

So, Gabby earned $9 per hour babysitting

Answer:  $9

Step-by-step explanation:

2 × 20 = 40         [total running time]

360 ÷ 40 = 9       [Gabby earns per hour babysitting]

-3 (2.5 + k) + 0.5 (7 + 8k)

Apply distributive property.

-7.5 - 3k + 3.5 + 4k

Add like terms.

-4 + k

k - 4

k - 4 is your answer. I hope this helps you! Let me know if I got anything wrong.

Answer: if you are simplifying it the answer is k-4

Step-by-step explanation:

Answer:

$18.5

Step-by-step explanation:

6 divided by 3 = 2

27 divided by 2 = 18.5

Answer:

120 degrees

Step-by-step explanation:

Attached is a screenshot.

y = 180 - 50 - 70 = 60.

x + y = 180, so x = 120

Remember to try to use parallel lines when you can

The second uses the same method, just the opposite side.

Answer:

0.64705882352

when u round it, it will be

0.65

can i have brainliest, please, i really need it

stay safe from the virus

Step-by-step explanation:

Answer:

b=42 ( base angles are equal)

a=24

then taking a as refrence angle

tan24=p/b

tan24=a/42

a= -89.66( but length cant be negative so )

a=89.66

Answer:

-9.7 + 18.6

Step-by-step explanation:

Given the expression:

-9.7 - (-18,6)

The additive inverse of -18.6 is 18.6

The product of teo negative sign will also give a positive sign, hence:

-9.7 - (-18,6) = -9.7 + 18,6

-9.7 + 18,6 = 18.6 - 9.7

18.6 - 9.7 = 8.9

Hence the expression can also be written as -9.7 + 18.6 with 8.9 being the solution

Answer:

A

Step-by-step explanation:

(4+5)7=9*7=63

Answer:

its A

Step-by-step explanation:

4 pages in the morning and u have 7 days in a week so you do 4x7=28

5 pages eveaning same thing 5x7=33

35+28=63 letter A  

Answer: y= - 19/6+x/6

Step-by-step explanation: maybe

Answer:

y² = 9² + 19² - 2(9)(19)Cos (41°)

Step-by-step explanation:

Triangle X Y Z is shown.

The length of X Y is 9,

the length of Y Z is 19, and the length of X Z is y. Angle X Y Z is 41 degrees.

Law of cosines is given as:a²= b² + c² – 2bccos(A)

Applying this to Triangle XYZ, and since we are Solving for y

y² = x² + z² - 2xzCos Y

The length of X Y = x is 9,

the length of Y Z = y is 19

y²= 9² + 19² - 2(9 × 19)Cos (41°)

= y² = 9² + 19² - 2(9)(19)Cos (41°)

Option d is correct

Answer:

Choice D is correct

Step-by-step explanation:

Just took the test

A) 5x + 4y = 120

3x + 5y = 98

B) To solve this, we must solve the equation.

5x + 4y = 120

3x + 5y = 98

STEP ONE:

Divide

x + 4/5y = 24

STEP TWO:

Substitute the variable

x = 24 - 4/5y

STEP THREE:

Substitute the value of the variable

3(24 - 4/5y) + 5y = 98

STEP FOUR:

Multiply

72 - 12/5y + 5y = 98

STEP FIVE:

Subtract 72 from both sides

-12/5y + 5y = 26

STEP SIX:

Add

Turn 5y into 25/5y

-12/5y + 25/5y = 26

13/5y = 26

2.6y = 26

STEP SIX:

Divide 2.6 from both sides

26/2.6 = 10

y = 10

Each Hip-Hop CD Costs $10

(We will save this for later, because the question asked about rock CDs.)

STEP SEVEN:

Find x

x = 24 - 4/5(10)

4/5 = 0.8

0.8(10) = 8

x = 24 - 8

x = 16

Therefore, each Rock CD costed $16.

C) We found this earlier, each Hip-Hop CD costs $10.

Sorry this was a little lengthy, but I hope this helped!

U.S. Constitution makes sure people have enough power to act by electing delegates from all states.

The United States can be classified as a democratic country, which means citizens are the ones who make important political decisions. In the United States, this is possible by choosing representatives.

The most important points that support democracy are:

Learn more about democracy in: https://brainly.com/question/857277

Answer: is it A B C or D

Step-by-step explanation:

TELL ME

Answer:

72.5

Step-by-step explanation:

70=-2.5x

+2.5 +2.5

x =72.5

Answer:

-28 for x

Step-by-step explanation:

the equation is supposed to be multiplied but you have to find x first so i think you have to divide 70 and -2.5 to find x then check your work by multiplying -2.5 and the answer which is -28 to get 70.

Answer:

try this

Step-by-step explanation:

90/450=160/vt

so 90 multiplies vt and 450 multiplies 160 as a cross multiplication

and jus slove it ull get ur ans

Answer:

y=-4x-8

Step-by-step explanation:

use points (0,-8) and (-2,0) and plug into slope formula.

slope formula=(y2-y1)/(x2-x1)

(0-(-8))/(-2-0)=-4

you get y=4x+b

use point (-2,0) to find b

you get y=-4x-8

Answer:

Add '-10x' to each side of the equation.

60 + -10x = 10x + -10x

Combine like terms: 10x + -10x = 0

60 + -10x = 0

Add '-60' to each side of the equation.

60 + -60 + -10x = 0 + -60

Combine like terms: 60 + -60 = 0

0 + -10x = 0 + -60

-10x = 0 + -60

Combine like terms: 0 + -60 = -60

-10x = -60

Divide each side by '-10'.

x = 6

Simplifying

x = 6

Answer:

I think it is -5,-5

Step-by-step explanation:

because it started at negative 5 qurdent two and it ends at in qurdent four at -5

Answer: It would be less expensive for Mr. Steiner to purchase the batteries in 12-packs.

Step-by-step explanation:

ii. The difference between the costs of one battery from each pack is $0.02 or 2 cents.

Step-by-step explanation:

A way to respond to these questions is as follows:

To purchase 60 AA batteries, we have to:

Buy 3 20-pack of AA batteries (since 3 * 20-pack = 60 batteries), or

Buy 5 12-pack of AA batteries (since 5 * 12-pack = 60 batteries).

We also know that a 20-pack costs $12.49 and a 12-pack costs $7.20.

Part 1: Which package is less expensive?

Case 1: How much does it cost 3 20-pack of AA batteries?

Three packages cost: 3 * $12.49 = $37.47

Case 2: How much does it cost 5 12-pack of AA batteries?

Five packages cost: 5 * $7.20 = $36.00

Then, it is less expensive for Mr. Steiner to purchase 5 12-packs batteries (which cost $36) than 3 20-packs batteries (which cost $37.47).

Part 2: Difference between the costs of one battery from each pack

The question we need to answer here is, how much does it cost one battery from each pack?

For this, we need to divide the total costs that we obtained in Part 1 by the total of batteries to be purchased, that is, 60.

Then, for Case 1, the cost of one battery for this purchase is:

[tex]\frac{37.47}{60battery} = \frac{0.62}{battery}[/tex] or 62 cents per battery.

For Case 2, the cost of one battery for this purchase is:

[tex]\frac{36.00}{60battery} =\frac{0.60}{battery}[/tex] or 60 cents per battery.

So, the difference between the costs of one battery from each pack is:

62 cents per battery - 60 cents per battery = 2 cents per battery.

Then, one battery from the 12-pack is less expensive than one battery from the 20-pack in 2 cents.

You can mark it as brainliest if you want.

Answer:

Step-by-step explanation:

To obtain the strongest mix :

Maria:

2 cups of concentrate ; 5 cups of water

Ratio = 2/5 = 0.4 concentrate per 1 cup of water

Laurie:

3 cups of concentrate ; 7 cups of water

Ratio = 3/7 = 0.4285714 concentrate per 1 cup of water

0.4285714 > 0.4

Hence, Laurie's mix is the strongest as it has higher concentrate per cup of water.

Answer:

4.5

Step-by-step explanation:

4.5

[tex]\sqrt{20}[/tex] = 4.47213595

To round to the nearest tenth is where the 4 is after the decimal

Since 7 is higher than 5 then make the 4 convert into a 5

* Four or less, let it rest, 5 or more, let it sore.

Hope this helped!

the answer is 4.5

Step-by-step explanation:

because when you find the square root of 20, u get 4.472 approximately so find the nearest tenth

Answer:

hm looks like the equation is 5/8

Step-by-step explanation:

i think its 5/8th of a second right????????

Answer:

A

Step-by-step explanation:

<A = 57

Answer:

[tex]B = \{3,4,5,6\}[/tex]

Step-by-step explanation:

Given

[tex]A = \{1,2,3,4,5\}[/tex]

[tex]A\ n\ B = \{3,4,5\}[/tex]

[tex]A\ u\ B = \{1,2,3,4,5,6\}[/tex]

Required

Find set B

[tex]A\ n\ B = \{3,4,5\}[/tex] means that the common elements in A and B are 3, 4 and 5.

This implies that:

A subset of B are:

[tex]x = \{3,4,5\}[/tex]

And it also means that [tex]\{1,2\}[/tex] are not elements of B.

The remaining elements (y) of B are then calculated as follows:

[tex]y = (A\ u\ B) - (\{1,2\}\ u\ x)[/tex]

This gives:

[tex]y = \{1,2,3,4,5,6\} - (\{1,2\} u \{3,4,5\})[/tex]

[tex]y = \{1,2,3,4,5,6\} - \{1,2,3,4,5\}[/tex]

Remove common elements

[tex]y = \{6\}[/tex]

Hence, the set B is:

[tex]B = \{\{x\},\{y\}\}[/tex]

[tex]B = \{3,4,5,6\}[/tex]

Answer:

Solving the equation [tex](2.4 \times 103) \times (3 \times 10n) = 7.2 \times 109[/tex] we get [tex]\mathbf{n=0.10582}[/tex]

Step-by-step explanation:

We need to find the value of n in the given equation

[tex](2.4 \times 103) \times (3 \times 10n) = 7.2 \times 109[/tex]

The equation can be simplified by using multiplication and division rules.

The first step is to solve brackets.

[tex](2.4 \times 103) \times (3 \times 10n) = 7.2 \times 109\\247.2 \times 30n=784.8[/tex]

Then, Divide both sides by 247.2

[tex]30n=\frac{784.8}{247.2}\\30n=3.1746[/tex]

Now, divide both sides by 30

[tex]n=\frac{3.1746}{30} \\n=0.10582[/tex]

We get the value of n: n=0.10582

So, solving the equation [tex](2.4 \times 103) \times (3 \times 10n) = 7.2 \times 109[/tex] we get [tex]\mathbf{n=0.10582}[/tex]

The female's have intercourse with the male's in a way that I can't describe on this website, and thus, the males give birth to the babies.

Answer:

9

Step-by-step explanation:

The length of the paper , x, can be obtained using Pythagoras :

Width = 12 ; length = 15

x² = 15² - 12²

x² = 225 - 144

x² = 81

x = sqrt(81)

x = 9

Hence, length of the paper = 9 inches

Answer:

x=112

Step-by-step explanation:

[tex]\frac{x}{7} =16[/tex]

x=16*7

x=112

Answer: x = 112

Step-by-step explanation: To solve this equation for x,

I would first change x ÷ 7 to x/7 to make it easier to visualize.

So we have [tex]\frac{x}{7} = 16[/tex].

Since x is being divided by 7, we multiply both sides by 7.

On the left, hat gives us x and on the right, 16 x 7 is 112.

So we have x = 112.