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3 years ago

Misha increased her test score from 60%to 80%. What was the approximate percent increase of misha's test score?

Mathematics

1 answer:

diamong [38]3 years ago

8 0

The answer is B for sure.

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andreev551 [17]

Answer:

For the first question, x = 12.

For the second question, x = -9

Step-by-step explanation:

In the first question, in △RSQ,

RZ/RS = 1/2 = RY/RQ (given)

∠ZRY = ∠ZRY (common)

∴ △RZY ~ △RSQ (2 sides prop., inc. ∠)

∵ △RZY ~ △RSQ

∴ RZ/RS = RY/RQ = ZY/SQ = 1/2

(x+2) / (3x-8) = 1/2

2(x+2) = (3x-8)

2x + 4 = 3x - 8

3x - 2x = 12

x = 12

In the second question, in △SRT,

SC/SR = 1/2 = SB/ST (given)

∠CSB = ∠CSB (common)

∴ △SCB ~ △SRT (2 sides prop., inc. ∠)

∵ △SCB ~ △SRT

∴ SC/SR = SB/ST = CB/RT = 1/2

(x+19) / (x+29) = 1/2

2(x+19) = (x+29)

2x + 38 = x + 29

2x - x = 29 - 38

x = -9

Hope this helped!

8 0

3 years ago

Read 2 more answers

45/100 in simplest form

Harrizon [31]

Hello there! How are you today?

First, let's take a look at our numbers.

45 / 100

Both of these numbers have a 0 and a 5, which means it is divisible by 5.
Let's divide both of them by 5.

45 / 5 = 9
100 / 5 = 20

We are now left with 9/20.

This is your simplified fraction since 9 and 20 do not have any common factors.

I hope this helps!

4 0

4 years ago

how would you move the green shape exactly over the gray shape using the fewest moves? check only necessary moves

Alisiya [41]

Answer:

C and B

Step-by-step explanation:

3 0

3 years ago

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The science club raised money to clean the beach.They spent $29 on trash bags and $74 on waterproof boots.They still have $47 le

Tamiku [17]

I think it is 150.......…

5 0

3 years ago

A computer program selects blue,red,green as the background color each time the program is used.The program was used 45 times on

forsale [732]

Answer:

Option b.

Step-by-step explanation:

Consider the below figure attached with this question.

A computer program selects blue,red,green as the background color each time the program is used.

Blue background = 12 times

Red background = 21 times

Green background = (45-12-21) times = 12 times

Blue background = Green background

Red background ≠ Green background

Green is just as likely as blue to appear, but not as likely as red.

Therefore, the correct option is b.

3 0

3 years ago