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Art [367]
3 years ago
8

Factorise 28ab^2-21ab^2

Mathematics
2 answers:
DanielleElmas [232]3 years ago
4 0

Answer:

7ab^2

Step-by-step explanation:

28ab^2-21ab^2=7ab^2

ra1l [238]3 years ago
4 0

The Answer is :

7ab^2

I hope u get what ur looking for and I wish u give me brainlist But I know u won't cuz everyone say that . But thank you so much if u put for me and It would be a very appreciated from you and again thank you so much

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At a basketball​ game, a team made 55 successful shots. They were a combination of​ 1- and​ 2-point shots. The team scored 92 po
AysviL [449]

There were 18 one point shots and 37 two point shots.

Step-by-step explanation:

Let the number of one point shots be x and the number of two point shots be y .

So we have the system:

x + y = 55

x + 2y = 92

Subtract the first equation from the second, we get:

0 + y = 92 - 55 = 37.  

y = 37.

From equation 1 we have x = 55 - y

therefore x = 55 - 37 = 18.

5 0
3 years ago
The figure below shows two triangles EFG and KLM:
Varvara68 [4.7K]

Which of the following can be used to prove that triangle EFG is also a right triangle?

D. Prove that KL is equal to c by the Pythagorean Theorem

Since we know that both triangles have a and b in common, the same side lengths, then KL must be equal to c as well. Using the Pythagorean Theorem, this can be proved. And because the Pythagorean Theorem can only be used on a right triangle, then triangle EFG must also be a right triangle if KL if also equal to c.

Hope this helps!! :)

5 0
4 years ago
Ruchi measured the area of her kitchen as 2.81 times 10 Superscript 4 square units. When she recorded the area, she wrote 2.81 t
yanalaym [24]

Answer:

The following statement is true:

She is incorrect because 2.81 times 10^4 is around 30,000 so the units must be smaller than feet. She most likely measured in inches.

Step-by-step explanation:

Area of the kitchen measured = 2.81 · 10⁴ = 28100

Lets evaluate all the statements

<h3>1) She is correct because dimensions of rooms must always be measured in feet and area would be square feet.</h3>

This statement is WRONG because if the dimension were measured in feet, the total area of the kitchen would be 28100 ft², which is too large of a kitchen. 28100 ft² can easily fit 10 medium sized full house of 2800 ft² or even a big building.

<h3>2) She is correct because 2.81 times 10^4 ft squared is equivalent to 2, 810 ft squared, which is an average size for a kitchen since area is always so much more than length</h3>

This statement is wrong because 2.81 ft· 10⁴ft = 28100 ft² NOT 2810 ft².

28100 ft² cannot be the size of the kitchen as discussed before.

<h3 /><h3>3) She is incorrect because 2.81 times 10^4 is around 30,000 so the units must be smaller than feet. She most likely measured in inches.</h3>

The statement is CORRECT because 2.81 in· 10⁴in = 28100 in² ≅ 30000 in² = 208 ft² , which can easily be the size of a kitchen.

<h3 /><h3>4) She is incorrect because 2.81 is a small number. She probably measured in yards to arrive at such a small value.</h3>

The number she calculated was not 2.81, it was 2.81 · 10⁴, which in yards become a very large value for a kitchen

3 0
3 years ago
Read 2 more answers
Andrew makes $6 an hour plus $9 an hour for every hour of overtime. Overtime hours are any hours more than 40 hours for the week
antiseptic1488 [7]
Part A: W=6x
Part B: S=6(40)+9y
Part C: 330=6(40)+9y... 6(40)=240... 330-240=90...

9y=90... 9y/9= y... 90/9=10, therefore y=10

Andrew worked 40 regular hours and 10 overtime hours.
8 0
3 years ago
Calculate what % of 144 is 36?
Effectus [21]

Answer:

25

Step-by-step explanation:

36*100=3600

3600÷144=25

6 0
4 years ago
Read 2 more answers
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