Could anyone please help me with this? I don't get this​

Answer:

8

Step-by-step explanation:

Isolate and solve for C

[tex]c + (-20) = -12\\c - 20 = -12\\c = -12+20\\c = 8[/tex]

Answer:

C = 8

Step-by-step explanation:

By reversing the equation, you can get the result.

-12 + 20 = ?

-12 + 20 = 8

Proofcheck:

8 + (-20) = ?

8 + (-20) = -12

Answer:

A=-4

B=4

C=-4

D=4

Step-by-step explanation:

Answer:

m= 3/7

Step-by-step explanation:

I'm assuming the question is solve for the variable, m.

First step is to isolate the variable

In other words, let's move everything (but m) from the left side to the right side

To move 7 to the right side, we can either divide both sides by 7 or multiply both sides by 1/7 (both equal the same thing)

7/3m × 1/7 = 1 × 1/7

1/3m = 1/7

Now we must move 1/3 from the left to the right side

We can use the reciprocal, 3/1, to do this

1/3m × 3/1 = 1/7 × 3/1

m = 3/7

Answer:

1) y= 3x + 7

2) y= 3/4x + 10

3) y= -5x - 2

4) y= 12x - 6

5) y= 1/2 + 9

Step-by-step explanation:

Answer:

2160

Step-by-step explanation:

45x4800

divide that by 100!

Answer:

If this is talking about 58 - 110 then that would be -52.

The estimated answer 58-110 is -40.

A number system is defined as a system of writing to express numbers.

The given expression is 58-110

Fifty eight minus one hundred ten.

In the given expression the operator used is minus which is subtraction

The result of 58 minus 110 is -52.

58-110=-52

To estimate this, we can round 58 to 60 and 110 to 100,

the estimated answer would be 60 - 100 = -40.

Sixty minus hundred equal to minus forty

Hence, the estimated answer 58-110 is -40.

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Answer:

Step-by-step explanation:

Second bullet point

Answer:

C.

was right on edge 2021

The correct option is (C)

An equation is a mathematical expression that contains an equals symbol.

Given:

Sound travels= 1100 feet per second

Stations are 2 miles apart from each other, i.e., 10560 feet.

Using,

x²/a² + y²/b²=1

So, 2c= 10560

c=5280

and, 2c-2a +3300 = 10560

2a= 3300

a= 1650

So, b²= c² - a²= 25155900

x²/2722500 + y²/25155900=1

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Answer:

7

Step-by-step explanation:

The new expression would be: 2(10) / 5 + 3. Using PEMDAS, first multiply 2(10) to get 20. Now you get: 20 / 5 + 3. Using PEMDAS, now divide 20 / 5 to get 4. The new expression is 4 + 3. Now, add to get 7 as your answer.

Hope it helps!

Answer:

1/2

Step-by-step explanation:

There are 6 marbles that are either red or green out of 12 total marbles, so you have:

6/12 = 1/2

Answer:

1/2

Step-by-step explanation:

To find the probability, you need to put the number of what you want to know the probability of over the total. In this case, we want to know what the probability of red and green over the total is. So, hence the equation:

[tex]\frac{5+1}{12}[/tex] or [tex]\frac{6}{12}[/tex] which can be simplified to [tex]\frac{1}{2}[/tex].

Answer:

1a. x=2 1b. x= -1

Step-by-step explanation:

Answer:

I  hope this helps

Step-by-step explanation:

Diameter (in)      Area (sq.)     Times bigger than 10 in

10                           79                              1

12                            113                             1.4

Answer:

Step-by-step explanation:

to prove that, that is a right triangle you use the theorem that the two shorter sides square added equals the longest side squared

so if its a right triangle then 10^2+12^2 will equal 15^2

10^2+12^2=244

15^2=225

225 does not equal 224 so that is not a right angle

Answer:

15,600 Gallons

Step-by-step explanation:

The 30% of 12000 is 3600 thus, Jessica's family used 15600 gallons of water.

The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.

The percentage is also called the indicating hundredths. Thus, 2% is two-hundredth, which means 2%=2/100=0.02.

As per the given,

Last used of water = 12000

30% of 12000 = (30/100)12000 = 3600

Water used in the current year = 12000 + 3600 = 15600 gallons.

Hence "The 30% of 12000 is 3600 thus, Jessica's family used 15600 gallons of water".

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Answer:

Perimeter of rectangle = 30 cm

Step-by-step explanation:

Perimeter of rectangle = (length + width) x 2

-- width or breadth --

Perimeter

= (10 + 5) * 2  

= 15 * 2

= 30 cm

Answer:

192 cm^3

Step-by-step explanation:

Volume equals Area of the base times the height divided by three.

V = length * width * height

                      3

V = 8 * 6 * 12   =   192 cm^3

           3

Answer:

Step-by-step explanation:

No, it's not always true

Answer:

83.96 (approximately)

Step-by-step explanation:

I am not completely sure what the problem is asking, just like the last one, but I believe that you are just supposed to take the inverse of cosine. So, in your calculator, make sure it is in degrees mode, then usually you have to click the 2nd key and then cosine. You use the inverse of cosine when two sides are given, but you are not given the angle.

It should look like:

[tex]cos^{-1}(\frac{4}{38})[/tex], which is approximately 83.96.

Hopefully this is right, if not, please let me know. Good luck.

Answer:

[tex]\frac{1}{3^{4} }[/tex]

Step-by-step explanation:

You can rewrite 3⁻⁴ as 1/(3⁴) or 1/81 without negative exponents.

The product rule is an exponent rule that states that when you multiply similar bases, the add exponents.

For example, (a²)·(a³) = a²⁺³ = a⁵

You can rewrite 3⁻⁴ as 1/(3⁴) because any number raised to a negative exponent is equal to 1 divided by that number raised to the opposite positive exponent.

So 3⁻⁴ = 1/(3⁴) = 1/81

Another way, you can think of it as "flipping" the base, i.e. (1/3)⁴ = 1/81

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Answer:

The X intercepts is 1 and 5

Answer:

v=18

u=4

Step-by-step explanation:

v/3=6

v=18

2u+2=5u-10

3u=12

u=4

Answer:

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

r=7/5

Step-by-step explanation:

Answer: 2

Step-by-step explanation:

To find the degree, use the exponent. An exponent of two means a degree of two, like an exponent of four means a degree of four

Answer:

Probably -3

Step-by-step explanation:

If it's going by 3s, then it should be -3.

Answer:

-3

Step-by-step explanation:

Answer:

y= 2/3x

Step-by-step explanation:

Hi, the slope-intercept would be y= 2/3x. This is because the city receives 4 inches of snow every 6 hours. 4/6 simplified is 2/3.

Answer:

number is 4

Step-by-step explanation:

let 'n' = the number

2(n + 18) = 9n + 8

2n + 36 = 9n + 8

36 = 7n + 8

28 = 7n

n = 4

Answer:

3.) 1  1/2 miles

Step-by-step explanation:

3/8 + 5/8 + 1/2 = 1  1/2

Answer:

C) 1 ½ miles

Step-by-step explanation:

Answer:

722.50

Step-by-step explanation:

not exactly sure its right but i did use a calculator so I'm pretty sure it's right

Given:

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original price - discount = sales price

Include 13% tax... price + sales tax = total price of the phone