Estimate the sum of 21+17.

Answers

Answer 1

Answer: 40 Is The Sum Of 21+17.

Answer 2

Answer: When estimating sums, you need to round to get to the answer.

So in the problem:

21+17 = ?

I round 21 to 20.

I round 17 to 20.

So know, the problem is:

20+20

The answer to 20 + 20 equals 40.

The answer is 40.

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Whats the volume of a right prism to cm to the third power =please help will name brainiest answer

Answers

The volume of the cuboid is the product of the edge
V = a*b*c
V - volume
edge length ( labeled a, b , c )
a = 12in
b = 5in
c = h = 5in

V = 12in * 5in * 5in = 300in³

When doing these always yous the formula
riangular Prism Volume Formula. The volume of a triangular prism can be found by multiplying the base times the height. Both of the pictures of the Triangularprisms below illustrate the same formula. The formula, in general, is the area of the base (the red triangle in the picture on the left) times the height,h.

l= 12in
h = 5in
b = 5in

V = 12in x 5in x 5in = 300in³

At the theater, one section of seats has 8 rows with 12 seats in each row. In the center of each of the first 3 rows are 4 broken seats that cannot be used. How many seats can be used in the section?

Answers

92 because 8*12 is 96. Then, you have to do 96 - 4 which is 92.

Final answer:

Initially, we have 96 seats in the theater. However, due to 12 broken seats in the first 3 rows, 84 seats are usable.

Explanation:

To answer this question, we will use simple multiplication and subtraction techniques of Mathematics. This is about calculating the number of workable seats in a theater.

First, we need to calculate the total number of seats in the theater. There are 8 rows with 12 seats in each row. We multiply the number of rows by the number of seats in each row: 8 rows * 12 seats/row = 96 seats.

In the first 3 rows, there are 4 broken seats in each of these rows. We need to subtract these from the total number of seats: 3 rows * 4 broken seats/row = 12 broken seats.

Finally, we subtract the number of broken seats from the total number of seats to find out how many seats can be used: 96 seats - 12 broken seats = 84 usable seats.

Learn more about Math calculations here:

brainly.com/question/31573607

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Why would "-7" in the expression (x^2+3)-(x-7) become positive?(This is a genuine question not a test one)

Answers

You would use the distributive property with the negative. So the second x becomes negative, but since the 7 is already negative it becomes positive. Think of it as if you put the two dashes together you can make a plus sign.

Answer:

x is the variable that's representing a number so -7 would not become posting

Please help me with with this science question

How does potassium dihydrogen phosphate affect soil, water, and air?

Which expression is equivalent to 6e+3(e-1)

Answers

Answer: Equivalent expression would be 9e-3.

Step-by-step explanation:

Since we have given that

$6e+3(e-1)$

As we need to simplify the above expression:

First we open the brackets :

$3(e-1)=3e-3$

Now, add it to 6e.

So, it becomes,

$6e+3e-3\n\n=9e-3$

Hence, equivalent expression would be 9e-3.

6e + 3(e - 1)

6e + 3e - 3

9e - 3

You are flying from Denver to Albuquerque. The distance is 349 miles between airports and takes 1 hour and 20 minutes to travel once the plane is in the air. It takes approximately 2 hours to check in to the airport and get seated. It takes 1 hour after seating for the plane to take off. It takes 1 hour once at the air port to disembark, and 1 hour to get a rental car and get back on the road. The whole trip can be driven by car in 6 hours. Which trip is faster: Car or plane?

Answers

Answer:

car trip is faster than plane trip

Step-by-step explanation:

The less time the trip takes the faster the trip is.

1. Plane: build a table with the given times for flying and sum up every stage of the flying trip:

Stage time

On air 1 h: 20'

Check in and get seated 2 h

To take off 1 h

Disembark 1 h

Get a rental car 1 h

______

Sum 6 h: 20'

2. Car.

Given total time: 6 h

3. Comparisson: 6 h < 6 h : 20' ⇒ car trip is faster than plane trip

How do you solve this problem 19 1/6 - 14 1/3

Answers

= 115/6 ÷ 43/3

= (115 × 3) / (43 × 6)

= 345/258

= 115/86

= 1 29/86

Jbennet is coorrect I actually had this question

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