Mathematics Middle School

Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 3. (Input decimals only, such as 12.71, as the answer.)

Evaluate The Expression 3.14(a2 + Ab) When A = 4 And B = 3. (Input Decimals Only, Such As 12.71, As The

Answers

Answer 1

Answer:

87.92

Step-by-step explanation:

3.14(a² + ab)

= 3.14 (4² + 4 × 3)

= 3.14 (16 + 12)

= 3.14 × 28

= 87.92

Hope it helps :)

Please mark my answer as the brainliest

Answer 2
87.92 hope this helped!

Related Questions

Factor 28+56t+28w to identify the equivelent expressions

Pick 2 answers :

A. 2 (56+112t+56w)
B. 28 (1+2t+w)
C. 4 (7+13t+7w)
D. 7 (4+8t+4w)

Please help! I tried to put it in an easy format.

Answers

B and D are the two equivalent expressions
It’s B, you factor out the greatest common factor with is 28 and you get 28(1+2t+w)

i made anotherrr ehehheh hope you two make it to this one

Answers

Answer:

cool thx i hope you have a great day

please please help me

Answers

This question is really hard

Answer:

1. [tex]\frac{1}{4}[/tex]

2.[tex]\frac{5}{6}[/tex]

3.[tex]\frac{3}{10}[/tex]

4. 1[tex]\frac{1}{8}[/tex]

5. 2[tex]\frac{6}{7}[/tex]

6. 3[tex]\frac{8}{9}[/tex]

Step by Step Explanation

I used the same method with all 6 questions, I had to tweak it slightly for the last 3 as they were mixed fractions.

For the first 3 questions, I used the number you had to make and multiplied it by the denominator. Let's use the first questions as an example.

We need to make 7 by adding something to 27/4. I multiplied 7 by 4 in order to get 28.

This means your goal is to get to 28/4.

The difference between 28/4 and 27/4 is 1/4. Meaning you only have to add 1/4 in order to make 7.

For the last 3 questions I first sorted the fractions out. Let's use the first question again on the right side as an example.

I made 5[tex]\frac{7}{8}[/tex] a top heavy fraction by first multiplying 5 by 8, which makes 40. I then added 40 to 7 making 47. Now the fraction is 47/8.

Now that we have our top-heavy fraction we do the same as last time. We need to make 7. So we multiply 7 by 8 and that makes 56. The difference between 56 and 47 is 9. So we need 9/8 in order to get to 56/8. We need a mixed fraction so 9/8 becomes 1[tex]\frac{1}{8}[/tex].

I hope this helps, if this was confusing don't be afraid to ask questions.

One-third times the difference of a number and 5 is Negative two-thirds. Which equation best shows this? One possible first step in solving the equation in the above problem is to . The value of the number is .

Answers

Answer:

1/3(n - 5) = -2/3

distribute 1/3

3

Step-by-step explanation:

I got it correct on edgen

1 = A   The first answer on the drop down menu

2 = C   The third answer on the drop down menu

3 = B   The second answer on the drop down menu


How do we figure out the value of a variable?

A )Add up all the numbers in the equation.
B )Multiply the variable by itself.
C )Isolate the variable on one side of the equals sign.
D ) A variable has no set value.

Answers

Answer:

c i think

Step-by-step explanation:

I borrowed $50 from mom and $50 dollars from dad to buy a bag costing $97.
After the purchase, i had $3 dollars left. I returned $1 to dad and $1 to mom, and reserved $1 for myself. I now owe 49+49 = $98 plus the $1 I reserved for myself., which is $99. Where is the missing $1?

Answers

(X) 32 Ps 10
Find the greatest cor

Answer:

So you are trying to fool me sooooo i don't know i think the one dollar is used already

Step-by-step explanation:

please help me nerds

Answers

Answer: 0.25 ( so I think you put it in between 0.2 and 0.3)

Step-by-step explanation:

There is a total of 4 counters.

so 1/4 = 0.25

The amount of white counters would be 0.75

and the amount of black would be 0.25

This would give the total probability

Answer:

0.25

Step-by-step explanation:

Since there is only one black in a total of four counters you would right it as 1/4 in equation form. In the decimal form, you would write it as 0.25. So, that means that you would put the cross in between 0.2 and 0.3.

Hope this helps :)

Maybe brainliest?

those are the options for both

Answers

The height of the ball is a(n) increasing function of time on interval a, and decreasing on interval b

Answer:

The ball is increasing on A and decreasing on B

Which of the above graphs represents the stated inequality?
X ≤ ⅞

Answers

Answer:

A

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

the circle is filled in because it is less than or equal too, and it points left

Simplify the expression: 2(4x+5)-12

Answers

8x -2

hope this helped
8x-2 is the correct answer

HELP PLEASE!

7.2 < x + 4.2.​

Answers

Answer:X=4.2

Step-by-step explanation:

Answer:

x>3

Step-by-step explanation:

Ms. Thompson reported her students' scores on their most recent test. How many students scored at least 80

Answers

Answer:

5

Step-by-step explanation:

5 scored in the 80's and 0 scored in the 90's

anything less than 80 would not be counted

Answer: I think it's 85 , I hope this helped if not I totally understand .

Step-by-step explanation:

Melissa earns a 2% commission on the first $750 of sales she makes each week. She earns a 3% commission on the amount of her sales that are greater than $750 each week. Melissa earned $37.50 in commissions last week. How much were her sales last week?

Answers

Answer:


1500
I hope this helps lol

The cost to rent a boat can be modeled by the equation C = 18h + 35 where C is the total cost in dollars and h is the number of hours in which the boat is rented.

What is the dependent variable?

A. h

B. C

C. 18

D. 35

Answers

Answer:

the answer is B, C is the total of cost (the dependent variable) because it depends on the independent variable, which is h. the dependent variable always is dependent on the independent value, like, you need the total of hours that you are renting the boat to know how much you need to pay, it can't be the other way around.

It’s B I looked it up

WILL GIVE BRAINS!!! HELP

Answers

Answer:

$30.50 per hour

Step-by-step explanation:

427/14 = 30.50

i want his job!!

btw can i get brainliest plz

Answer:

$30.50

Step-by-step explanation:

All you have to do is take any one of those and divide the number of dollars earned by the number of hours:

$427 divided by 14 = $30.50

PLS PLS HELP ME ILL GIVE BRAINLIEST

Answers

Answer:

It's no. C

Step-by-step explanation:

The answer is B! All of the points line up with the answer choice of B. Hope this helps! Brainliest please

Jayden purchased a pair of Jordan sneakers for $150 that is 23% off of the original price, what is the original price for the sneakers?

A. $173
B. $ 184.50
C. $194.81
D. $115. 50

Answers

Answer:

B

Step-by-step explanation:

Answer:194

Step-by-step explanation:

Find the difference.


Jeremy is practicing some tricks on his skateboard. One trick takes him forwards 4 feet, then he flips around and moves backwards 7.2 feet, then he moves forward again for 3.2 feet.


Part 1 out of 2
What expression could be used to find how far Jeremy is from his starting position when he finishes the trick?


The expression that represents the situation is

Answers

Answer:

Jeremy is in the same position he started in.

Step-by-step explanation:

4 ft - 7.2ft = -3.2ft + 3.2ft

Hope this helps! :)

Multiply and Divide Decimals.
Gweyn buys material to make a bumble bee costume. she buys 1.75 yards of yellow material. she buys 1.2 time as many yards of black material. how many yards of the black material does Gweyn buy?
Answer the problem Show your work.
State your answer give details.
Do all this You'll get Brain!!! <3

Answers

Answer:

ithinxk its 2.1

Step-by-step explanation:

Answer:

2.1 Yards of Black Material.

Step-by-step explanation:

The problem is a simple multipication problem.

Take 1.75, and multiply that by 1.2. The answer comes out to 2.09. Since the 9 in the .09 part is above 5, you would round that up, which gets you the answer of 2.1 Yards.

A rectangle has a length of 2x+ 7 and a width of 3x+ 8y. Write and simplify an expression for the perimeter of that rectangle.

Answers

2(2x+7)+ 2(3x+ 8y) should work

simplify
1) 8-(2+7)
2) 9-(2-7)
3) 8-(-2+7)
4) 8-(-2-7)

Answers

1). 8-9=-1
2). 9–9=18
3). 8–2+7=8+9
4). 8–2-7=8+5

Which expression is represented by the set of algebra tiles below?

1 box contains x and 6 boxes contain minus signs.
x + 6
x minus 6
6 minus x
6 x minus 1

Answers

Answer:

the correct answer is b

Step-by-step explanation: because in the image

                                               X --- ---

so that is X - 6

                                                 

in orlando , florida , the high temperature was 85 degrees on saturday 79 degrees on sunday. What is the percent of change in the high temperature from saturday to sunday?

Answers

The percent is estimated 7%.
Percent estimated 7%

Who knows how to do this ?

Answers

Answer:

hello again

Step-by-step explanation:

i think

[tex] \frac{10}{19} [/tex]

have a nice day

What is the solution to the system of equations below? 2x-y=10 and y=-1/2x+5​

Answers

x= 10/3 y=20/3

You can substitute the second equation into the first one because the second one tells you what y is so you plug in to the first equation.

a quart of stain covers 100 square feet. how many quarts should you buy the stain the wheelchair ramp?

Answers

Answer:

aw hes in a wheelchair

Step-by-step explanation:

evaluate the expression for x = 8
x = 5

Answers

Answer:

4x2=8

5x1=5

Step-by-step explanation:

Because four 2 times is 8 because 4 plus 4 is 8.

and everything multiplied by 1 is the other number.

I'm not sure if that's how you meant it.

It is 2*4=8 and 3+2=5

how do you get from 100 to 106 using multiplication

Answers

Answer:

1x6 + 100

106

Step-by-step explanation:

Help me please I need help

Answers

Answer:

1-3.6

2-4.1

3-3.2

4-5.8

5-12.7

Step-by-step explanation:

The probability of rolling a number less than 3 on a number cube is 2/6. What is the probability of its complement? Simplify your answer.

Answers

Answer:

4/6

as we know probability of rolling a number less than 3 on a number cube is 2/6 and then its complement (opposite, greater than 3) that is 4/6

Aw we know the probability of rolling A number less than three on a number cube is 2/6 and then it’s complement (opposite, greater than three) that is 4/6
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