I WILL GIVE BRAINLIEST
Was the expression evaluated correctly using the order of operations? If not, find and correct the error.
80 - [tex]\frac{1}{3}[/tex](15)² = 80 - 5² = 80 - 25 = 55

Answer:

a=15

Step-by-step explanation:

2a-10=20

2a=30

a=15

can i have one brainliest plz

Answer:

a = 15

Step-by-step explanation:

I assumed you were trying to solve for A :)

3a - 10 = a + 20

1. Combine like terms (A's on side, numbers on the other).

3a - 10 = a + 20

-a           -a

-----------------------

2a - 10 = 20

     +10   +10

------------------------

2a = 30

Now that all of your like terms are combined, work to isolate A. The only way to do this is to divide by 2 on both sides of the equal sign.

[tex]\frac{2a}{2} = \frac{30}{2}[/tex]

This leaves you with a = 15, which is your answer if you are told to solve for A

I hope this helps!

Answer:

1. m = -3 b = 2

2. m = 1/2 b = -1

3. m = -1 b = 79

4. m = 2 b = -2

5. y = -4x + 3

Step-by-step explanation:

1. the equation y=mx + b is used in number 1. m = slope and b = y intercept. so, because -3 is in the m spot, it is the slope, and because 2 is in the b spot, it is the y intercept.

2. apply the same concept as number 1. 1/2 is in the m spot, so it is the slope, and -1 is in the b spot, so it is the y intercept

3. To know the slope of the graph, you do rise/run. meaning, from one point on the graph, count how many times you go down to get to the next points, and then how many times you go over to get to the point. So, the slope of this line is -2/2, which is equal to -1. So, m = -1. To get the y intercept, take a pair of points from the graph (for example, (3,76)) and take the slope, and fill those in to the y = mx + b equation, and then solve for b. so, you get 76 = -1(3) + b. then do -1 times 3 and get -3. add 3 to both sides and you get b = 79.

4. apply the same concept on number 4 as you did number 3. Find rise/run, and you get 2/1, so m = 2. then take a point from the line (like point (0,-2)) and and the slope and fill it in to  y = mx + b. you get -2 = -2(0) + b. so, b = -2.

5. simply fill in the information into the y = mx + b equation. remember, m is the slope, and b is the y intercept. so, you get y = -4x + 3

Answer:

f(x)=9(x+3)^2+2

Step-by-step explanation:

f(x)=9x^2 --> a=9

f(x)=a(x-h)^2+k -->f(x)=9(x-h)^2+k

vertex= (-3,2) --> h=-3 and k=2--> making it f(x)=9(x+3)^2+2

Answer:3rd one

Step-by-step explanation: Took the test

Answer:

answer is C. {t | 0 < t < 2}

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

Plug in 1ft/12in

This will give you 36 ft

Step-by-step explanation:

After plugging in, multiply across and simplify/divide and you get your answer

Answer:

6

Step-by-step explanation:

3x12 = 36

(4+2)    6

simplify

36/6=6

The value is indeed 6 and there shouldn't be a variable because if there is, then there should be a variable in the question.

The simplified form of the expression (3 × 12)/(4 + 2) is 6.

PEMDAS rule states the correct order of simplifying an expression is as follows -: Parenthesis, exponents, multiplications, divisions, additions, and, subtractions.

Given, An expression (3 × 12)/(4 + 2).

Now, 12×3 is 36, and (4 + 2) is 6.

Therefore the simplified form of the expression is,

= 36/6.

Now, we know that 6 times 6 is 36 so, 36 divided by 6 the quotient should be 6.

Therefore,

36/6.

= 6.

So, The value of the expression  (3 × 12)/(4 + 2) is 6.

learn more about numerical expressions here :

https://brainly.com/question/29778337

#SPJ6

Answer: 87.50

Step-by-step explanation:

Answer:

4/100

Step-by-step explanation:

% or per cent means "in a hundred"

Answer:

14287143/1000000000 :)

Step-by-step explanation:

Answer:

142857143 / 1000000000

Step-by-step explanation:

it's 100000

hope this helps!! :)

Answer:

One 25 fl oz bottle costs $8

Step-by-step explanation:

144÷18=8

Answer:

8$ if my math is correct.

Step-by-step explanation:

Kind of a trick question. It is asking how much each bottle costs. You know that there are 18 bottles and have a total cost of $144. You  do not need the 25oz for this equation. Lastly, I divided the total cost by 18 to get the total of 8$ for each bottle

Answer:

4, 2, 1

Step-by-step explanation:

The factors of 48 are 48, 24, 16, 12, 8, 6, 4, 3, 2, 1.

The factors of 92 are 92, 46, 23, 4, 2, 1.

The common factors of 48 and 92 are 4, 2, 1.

Answer:

32

Step-by-step explanation:

Answer:

c would be your answer:)

Answer:

D. x=-2

Step-by-step explanation:

Pluggy chuggy those answer choices and -2 is the only one that works. The rest of the answer choices are extraneous. Therefore the answer is -2 and can not be infinitely many solutions since B and C do not work.

Answer:

Angle 3= 135

Step-by-step explanation:

Angle 3=Angle 1 because they are corresponding angles meaning they are equal and on the same side of the traversal.

Hope this helped and the answer was right in the question

Answer:

Step-by-step explanation:

corresponding angles are congruent, equal to each other.

therefore, ∠1 ≅ ∠3 which is 135°

Step-by-step explanation:

0 < X < 24

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

Answer:

What’s the freaking question G ??!?

Answer:

3y and 1y

Step-by-step explanation:

Answer:

n x 2 + 10

Step-by-step explanation:

All you need to do is apply this say to a number like 10 for ex: 10 x 2 + 10

= 20 + 10

= 30

Now do the same with n!

n x 2 + 10 and there is your answer!

Answer:

22.2653 or 22.27

Step-by-step explanation:

hope this helps

Answer: 22.265

Step-by-step explanation:  4.201x5.3 = 22.265

Answer: 6/14 and 42/99

Step-by-step explanation:

Answer:

2 37/40

Step-by-step explanation:

Answer:

After the discount, the comb would be $1.35

Step-by-step explanation:

Answer:

1.512445e+216

Step-by-step explanation:

Answer:

k = -50

Step-by-step explanation:

3/5k - 5 = 7/10k

3*2 / 5 *2 = 6/10 to get a common denominator

6/10k - 5 = 7/10k subtract 6/10 from 7/10

-5 = 1/10k now eliminate fraction by multiple both sides by reciprocal (10/1)

-5(10) = 1/10(10)k

-50 = k

Answer: 2x+3x-1+4x+8