Mathematics Middle School

Given a = -3, b = 5, and c = -8, then a 2 b + c is _____.

I thought it was -53 after doing PEMDAS, but I got it wrong. Any help would be appreciated!

Answers

Answer 1
(-3)^2=9
9(5)=45
45-8= 37
Answer 2

Answer:

the answer is 22

Step-by-step explanation:

because -3 is squared and that equals 6 and 6 times 5 equal 30 minus-8 equal 22

Related Questions

Find last​ year's salary​ if, after a
2% pay​ raise, this​ year's salary is
$38,760.

Answers

Your answer would be $37,984.8

explain the simplified form of 3abc/abc when abc doesn't equal zero?

Answers

Dividing abc, which is a*b*c, we get 3*a/a*b/b*c/c=3

how do u answer this?

Answers

there are also 6 possibilities because the die has six sides with 1 different number on each.
If you are tossing a fair die, you have 6 sides.
For this problem, you are trying to find the probability of tossing a '6' on a fair die (6 sides). 

P(6) = 1/6

math questions down below

Answers

#1 the correct answer is 6/7
#2 the correct answer is -9

What does "how many" mean in math?

Answers

Like, how many cars are in a line or how many fruits did this person eat.
"How many" in Math is asking for the amount of something. For instance, of there are 5 soccer balls and the problem asks, "How many soccer balls are there?", you would answer with the amount of soccer balls: 5.

Is the square root of 140 approximate to 10.7

Answers

The square root of 140 is 11.83, so no 10.7 is not approximate.

Find the percent error of the measurement 7 cm.

Answers

The answer is 7.14 :)

Answer:

The percent error of the measurement 7 cm is 7.14%.

Step-by-step explanation:

Given : Measurement 7 cm

To find : The percentage error of the given measurement.

Solution :

First we find the error in the measurement.

Measuring to the nearest centimeter means the true value could be up to half a meter smaller or larger.

i.e It is upto 0.5 (between 6.5 and 7.5)

Measurement - 7 ±0.5 cm

Absolute Error = 0.5 cm  

Relative Error = [tex]\frac{0.5}{7}=0.0714[/tex]

Percentage Error =  [tex]0.0714\times 100=7.14\%[/tex]

Therefore, The percent error of the measurement 7 cm is 7.14%.

What question is equivalent to 0.83

Answers

if you want a question:

1 - 0.17 = 0.83

0.50 + 0.33 = 0.83

really, all you have to do is come up with a equation that equals to 0.83

hope this helps

Ms.Phipps made 12 dolls for gifts this year. She made 4 1/2 times that number last year. Find the total number of dolls she made this year and last year.

Answers

54 dolls were created this year and last year


12 x 4.5 = 54 

54 last year
12 this year

simplify |-7.5| - |10.3|

Answers

|-7.5| - |10.3| = 7.5 - 10.3 = -2.8
|-7.5|  = 7.5
|10.3| = 10.3

Answer is 7.5 - 10.3  = -2.8

Is the value of the 1 in 1,440,000 10 times as great as the value of the 4 in the hundred thousands place?

Answers

If you multiply 400,000 by 10 you get 4,000,000. This means that, yes, the value of the 1 is 10 times the 4 in the hundred thousands place. 
Hope I helped :)
Final answer:

The value of the 1 in the number 1,440,000, which is in the million's place, is 2.5 times greater than the value of the 4 which is in the hundred thousand's place.

Explanation:

The value of the 1 in the number 1,440,000 is in the millions place, thus it represents 1,000,000. The 4 on the other hand, is in the hundred thousands place, and thus represents 400,000. The value of the 1 is therefore not just ten times the value of the 4, but in fact, it is 2.5 times greater.

Here is the process: value of 1 = 1,000,000, value of 4 = 400,000, so 1,000,000 / 400,000 = 2.5. Therefore, the value of 1 is 2.5 times the value of 4.

Learn more about Place Value here:

https://brainly.com/question/35447631

#SPJ2

-2/3y - 3/4=5 I am very confused

Answers

-2/3y - 3/4 = 5

Add 3/4 to both sides.

-2/3y = 5 + 3/4

Simplify.

-2/3y = 5 3/4

Multiply both sides by -3/2.

-3/2 × -2/3y = 5 3/4 × -3/2

Simplify.

y = 23/4 × -3/2

Simplify.

y = -69/8 AND y = -8 5/9

~Hope I helped!~

An angles measure is 6 degrees more than 3 times the measure of its complement. Find the measure of the angle.

Answers

Let X be the angle
Let it's complement be 90-x

x = 3(90-x)
x = 270-3x
4x = 270
x = 67.5 degrees

Hope that helps
If you have any questions feel free to ask :)
-Asmaa

what is the volume in cubic yards of a greenhouse that is 20 ft long, 15 ft wide, 10 ft high

Answers

the answer to your question is 3000
The answer is 3000 because you have to multiply all the numbers

Which is the better buy 3 pounds for 8.31 or 5 pounds for 12.95

Answers

answer:

5 pounds for 12.95

explanation:

to solve, find the unit rate. the cheaper unit rate is the best and cheapest choice.

8.31/3 = 2.77
12.95/5 = 2.59

5 pounds for 12.95 is the cheaper choice because it has a smaller unit rate.

Hope this helps! :D
It'd be better to buy the 5 pounds for 12.95.

If you divide the price by the amount, it results as 2.59 as opposed to 3 pounds for 8.31 which is 2.77 per pound, making it clear now that the 5 lb for 12.95 is the better deal

One package of fruit drink contains 6 drinks. Which of the following list the ordered pairs (packages, number of drinks) for 1, 2, 3, and 4 packages of fruit drinks?

Answers

I think this is 

(1,6), (2,12), (3,18), (4,24)

1 package has 6 drinks so that = (1,6)

 then multiply 6 by the number of packages for total number of drinks

 so you end up with (1,6) (2,12) (3,18) (4,24)

Simplify. 4−8÷2+3

Please help me with this problem.

Answers

PEMDAS says the first thing you need to do is division:

4 - 4 + 3

Then, do subtraction and addition from left to right:

0 + 3
3

Hope this helped!

14 meters per second to centimeter per minute

Answers

1 meter - 100 cm

14 x 100 = 1400 cm per second

60 seconds per minute

1400 * 60 = 84,000 cm per minute

Which statements about quadrilaterals are true? Choose all answers that are correct. A. A square is always also a parallelogram. B. A parallelogram is always also a rectangle. C. A rhombus is always also a trapezoid. D. A rectangle is always also a parallelogram.

Answers

The answer is D because the qualities of the rectangle is the same as a parallelogram.
D is the answer i got D to

how to simplify this

Answers

Factor it out.
Both exponent cancel out each other which equals 1.

Can someone explain domain and range?

Answers

Domain generally represents x and range y

The domain of a function is the complete of possible values of the independent variable. Range: the set of all output values of a function.

If I increase an amount by 7% what is the multiplier

Answers

The answer is:  " 1.07 " .
_______________________________________
Explanation:
_______________________________________
100 % + 7 % = 107 % ;
_______________________________________
107 % = 107/100 = 107 ÷ 100 =   1.07  .
_______________________________________
1.07 hope this helps

What is the value of 11−3m , when m = 2? (Please do it step by step because I dont know how to do this ;[ )

5

6

10

12

Answers

Substitute the variable for the value given.

11 - 3m becomes 11 - 3(2)

Now do the order of operations.

11 - 3(2) =
11 - 6 =
5

So, the answer is 5.

What is the value of the underlined digit? 5,678.321. The underlined digit is 1.

Answers

0.001

Hope this helps!
.001     the decimal is important because in the number the 1 is after the decimal, itrepresents the fact that its not a whole number. The two zeros are there to replace the two numbers that come before the 1 and after the decimal. they replace 32

X=b-cd,c
Solve for c

Answers

Is it just x=b-cd
If so
cd=b-x
÷d. ÷d
C=b-x/d
x = b - cd

b - cd  = x

- cd = x - b 

-c  =  x - b  /  d

c  = -x + b / d 

explain in your own words what the mean of a negative exponent means?

Answers

A negative exponent is the opposite of a regular exponent so for example, 5 to the power of -3 is 1/125 

one type of insect is 0.0052 meter long.what is this length in scientific notation

Answers

Because scientific notation has to be in between 1 and 10, you would need this to be 5.2. Count the spaces and since its getting smaller your exponent is negative. 

Your answer should be 5.2*10^(-3)

Decimals between 5.1 to 5.2

Answers

There are an infinite number of decimals between 5.1 and 5.2, 5.11,5.11111111111111.
It very simple. There are multiple choices. 1.12, 1.13 ,1.14, 1.15, 1.16, 1.17 ,1.18, 1.19, 

Compare the integers indicated on the graph below.

A. -6 > -12

B. -12 > -6

C. -4 > -8

D. -8 > -4






5)

Answers

The correct answer is A. -6 > -12


Hope that helped! :)

1. Four more than five times a number is less than 54. Evaluate this problem situation for values of the number.

2. Two times the sum of a number and four increased by three is at most six less than the number. Evaluate this problem of situation for values of the number.

Answers

1. 4 + 5x < 54
- subtract 4 to the right side
- divide by 5
- answer: x <10 

2. 2(x + 4) + 3 = 6 - x
- distribute 2 to x and 4
- add 8 and 3
- add -x to the left side
- subtract 11 to right side
- 2x= -5 
answer: x= -5/2
The answer is  -5/2
thanks (:
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