I need help don’t know this ??

Answer:

+19

Step-by-step explanation:

8-(-11)= 8+11

8-(-11)=+19

Answer:

19

Step-by-step explanation:

8 - ( -11) =

8 + 11 =

19

The two negatives combine to make a positive.

We have been given an expression [tex]\left( 4^{-2} \cdot 4^{-3} \right)^{3}[/tex]. We have been given steps how Chris tried to solve the given expression. We are asked to choose the correct option about Chris's work.

Let us simplify our given expression.

Using exponent property, [tex]a^m\cdot a^n=a^{m+n}[/tex], we cab rewrite our given expression as:

[tex]\left( 4^{-2+(-3)} \right)^{3}[/tex]

[tex]\left( 4^{-5} \right)^{3}[/tex]

Now we will use exponent property [tex](a^m)^n=a^{m\cdot n}[/tex]to further simplify our expression.

[tex]\left( 4^{-5} \right)^{3}= 4^{-5\cdot 3}[/tex]

[tex]\left( 4^{-5} \right)^{3}= 4^{-15}[/tex]

Therefore, Chris made mistake in step 2.

Answer:

$39

Step-by-step explanation:

Using the given formula :

I = P × R × T

I = 30 × 10/100 × 3

I = $9

She have = 30 + 9 = $39

Answer:

x=6

Step-by-step explanation:

convert the mixed number to a improper fraction..then multiply both sides of the equation by 6...collect like terms..then divide both sides by 37..then you should get your answer...

Answer:

x=10

is the solution

..............

Answer:

10

Step-by-step explanation:

It's right in Edgen

Answer:

D. Only one cleaning product was asked about in the survey.

Any given company can use more than one cleaning product or even use a combination of different cleaning products. The question was not specific enough, since it should have probably asked which cleaning products are used and which ones are used more frequently.

Step-by-step explanation:

the other options are wrong because:

Answer:

i need help to with this Qestion to

Step-by-step explanation:

Answer:

x is equal to -2.8

Step-by-step explanation:

2(x-4)=4x+3x+6=

2x-8=7x+6

Subtract 2x from both sides

-8=5x+6

Subtract 6 from both sides

-14=5x

x=-2.8

Answer:

-14/5

Step-by-step explanation:

when opening the RHS bracket.

we will get 2x-8

further solving,

2x-8= 7x+6

then rearranging,

2x-7x= 6+8

-5x=14

so x= -14/5

Answer:

285

Step-by-step explanation:

The total amount of degrees in a circle is 360, we know that the un-shaded portion of the circle is 90 degrees this means that the shaded portion has 270 degrees.

We also know that the area of the circle is [tex]\pi r^{2}[/tex] but we are finding a portion of that, therefore we would need to multiply it by [tex](\frac{270}{360} )[/tex]. The radius is also given which is 11.

Area of the shaded region = [tex](\frac{270}{360}) * \pi 11^{2}[/tex] = 285

Answer:

5x-(9x+14)=−4x−14

3(x+10)-2=3x+28

So, 3(x+10)-2 is greater than 5x-(9x+14)

Answer:

5(2x-3)

Step-by-step explanation:

Answer:

Step-by-step explanation:

hello :

10x-15 = 5(2x-3)  ...the factor is : 5

Answer:

12mn

Step-by-step explanation:

Just multiply 4 by 3

Answer:

D

E

F

Step-by-step explanation:

Because as long as they stay the same they can just be mixed.

Answer:

[tex]\sqrt{x^{2}-7[/tex]

Step-by-step explanation:

Negative exponents flip the fraction, fraction exponents imply a radical to the denominator's degree, so flip the fraction and take the square root of what is in parentheses

We know that :

[tex]\bigstar \ \ \boxed{\mathsf{a^{-1} = \dfrac{1}{a}}}[/tex]

[tex]\mathsf{Given \ question \ is : \dfrac{1}{(x^2 - 7)^{\frac{-1}{2}}}}[/tex]

Using the above formula, we can write it as :

[tex]\implies \mathsf{\dfrac{1}{\dfrac{1}{(x^2 - 7)^{\frac{1}{2}}}}}[/tex]

[tex]\implies \mathsf{(x^2 - 7)^{\frac{1}{2}}}[/tex]

[tex]\implies \mathsf{\sqrt{x^2 - 7}}[/tex]

Answer:

idkfin4infiotnoitrnin

Step-by-step explanation:

bye

Answer:

7

Step-by-step explanation:

It worked my number was 7.

7*2=14

14*2=24

24+7=35

35*2=70

70/10=7

7!!!

Answer:

55% probability of getting a purple marble if you take a marble out of the bag

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question, we have that:

20 marbles.

6 are red.

3 are green

The rest(x) are purple.

So

6 + 3 + x = 20

x = 11

20 marbles, of which 11 are purple.

11/20 = 0.55

55% probability of getting a purple marble if you take a marble out of the bag

Answer:

The answer is 12

Step-by-step explanation:

If there are 36 gallons per 3 min. To find the per min you would divide 36 by 3.

Answer:

x=6

Step-by-step explanation:

We can use ratios to solve

18              4x+6

--------- = -------------

24               40

Using cross products to solve

18*40 = 24 * (4x+6)

720 = 24*(4x+6)

Divide each side by 24

720/24 = 24/24 (4x+6)

30 = 4x+6

Subtract 6 from each side

30-6 = 4x+6-6

24 = 4x

Divide each side by 4

24/4 = 4x/4

6 = x

Answer:

11.43

Step-by-step explanation:

[8 + (24 x 3)] divided by 7

[8 + (72)] divided by 7

80/7

11.42857142857143

11.43 (I rounded it)

Answer:

11.42

My explanation:

P( )

E *

M x

D /

A +

S -

the first step is to multiply 24x3 because parenthesses go first

the second step is that get the 72 form multiplying and add 8 to it becasue its inside the lines

third step is to divide by 7 and then you get 11.42

Feel free to ask for more help :)

Hey there!

Let's think of both of these functions as two different slope-intercept equations (y=mx+b). Don't let all of the fs and gs confuse you; those are just showing that they are two different functions!

Our function f has an equation of y=x, which is a diagonal line that passes through the origin and goes across each small grid on the graph diagonally.

Our function g has an equation of y=-1/3x+2, which means that it will intersect with the y-axis at two units above the origin and for every three whole steps it goes to the right, it will have gradually gone down one whole step as well.

Attached to my answer is what a graph of it would kind of look like. Sorry if the lines don't look too much like a line it's a bit difficult to draw with a mouse haha!

I hope that this helps! Have a wonderful day!

Answer:

yo that a hard question i honeslty dont know

Step-by-step explanation:

Step-by-step explanation:

use bodmas

start with multiplication

-4*10 = -40

5+5/2 - 40

addition next

5 + 5/2 = 7.5

7.5 - 40 = -32.5

Answer:

81

Step-by-step explanation:

-9^2, or -9 times -9 equals 81, the negatives cancel each other out

Your answer would be 81.

The calculation the question is asking us to do is y², but substitute in y for -9. This gives us (-9)². We know that 9² = 81, but (-9)² also equals 81 because when you multiply 2 negative numbers together, the negative sign cancels out.

I hope this helps!

Answer:

Move all terms not containing k to the right side of the equation.

Exact Form:

k = 43/4

Decimal Form: k = 10.75

Mixed Number Form:

k = 10 3/4

The formula in finding the distance between two points is given below:

Now, you know the distance formula. So, let us try solving the given problem using the distance formula.

Problem: What is the distance between (-5, -5) and (-9, -2)?

From inspection on the given problem:

Substitute the given values into the distance formula and solve for d:

Therefore, the distance between two points is 5 units.

[tex]\\[/tex]

Now, wasn't that easy? Try this sample problem:

From the sample problem above, you may solve it on your own to enhance your skill on calculating the distance.

For more information about the Distance Formula, just visit this link: https://brainly.com/question/18156437

Answer:

The pizza parlors cost the same when delivering 4 pizzas.

Step-by-step explanation:

For each store, the total price is

cost of pizzas + cost of delivery

The cost of delivery is just a fixed number for each store, $20 or $12.

The cost of the pizzas is the price of a pizza multiplied by the number of pizzas.

Let x = number of pizzas

The cost of the pizzas is

Jacob's: 10x

Ashley's: 12x

Jacob's total cost (pizzas + delivery):

10x + 20

Ashley's total cost (pizzas + delivery):

12x + 12

We want the total costs to be the same, so we set our two total cost expressions equal and solve for x.

12x + 12 = 10x + 20

Subtract 10 from both sides.

2x + 12 = 20

Subtract 12 from both sides.

2x = 8

Divide both sides by 2.

x = 4

Answer: The pizza parlors cost the same when delivering 4 pizzas.

Answer: 10.94 gallons

Step-by-step explanation:

The rate of flow is given by the equation:

F(t) = (t^2+1) / (t + 1)

The rate at which it empties:

E(t) = ln (t + 7) / (t + 2)

Where t represr ts time in both equations

Amount of oil, to the nearest gallon, is in the tank at time t = 12 minutes

We can get this by taking the difference of both equations since it is occurring at the same time 't'

That is : F(t) - E(t)

At t= 12

[ (t^2+1) / (t + 1) ] - [ ln (t + 7) / (t + 2) ]

F(12) = (12^2 + 1) / (12 + 1) = 145/13 = 11.1538

E(12) = In(12 +7) / (12 + 2) = In(19) / 14 =

E(12) = 2.9444389 / 14 = 0.2103

F(t) - E(t) = (11.1538 - 0.2103) = 10.9435 gallons