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sattari [20]
2 years ago
11

Pls help me I'm in neeeeed :(​

Mathematics
1 answer:
-BARSIC- [3]2 years ago
7 0

Answer:

x = 30

Step-by-step explanation:

x+2x= 90-------> 3x=90

Divide by 3

x= 30

Hope this helps! Pls mark brainliest if correct:)

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10 points. I don't know how to give people Brainliest. Whoever clears it up and teaches me how will get Brainliest. PLS HELP!
myrzilka [38]

Answer:  If two person had given your answer then there is a option of mark as brainliest. Click there in the option of mark as brainliest in which you like the answer most. If any one person has given answer then after some days you will a notification to mark his/her answer as brainliest. By this you can mark an answer as brainliest.

Step-by-step explanation:

4 0
2 years ago
What is an expression involving division that is equivalent to the expression below?<br> 2/9 x 3/4
Ierofanga [76]

Answer:

2/9 ÷ 4/3

Step-by-step explanation:

5 0
3 years ago
Check all the equations that are equivalent.
Fiesta28 [93]

Answer:

the answer is a, c and d

a. a=180(n-2)

c. n=a/180+2

d. n= a+360/180

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Decrease 216 by 37 1/2%
Anon25 [30]

Step-by-step explanation:

In this question we need to decrease 216 by 37\dfrac{1}{2}\% or 37.5 %.

For this, firstly find 37.5 % of 216.

37.5\%\ \text{of}\ 216=\dfrac{37.5}{100}\times 216\\\\=81

Now subtracting 81 from 216 to find decrease of 216 by 37.5 %.

So,

216-81 = 135

Hence, 135 is the decrease of 216 by 37.5 %.

8 0
3 years ago
A chemist begins studying a radioactive sample that has a mass of 450 grams.
77julia77 [94]

Answer:

The question should say..... How much of the sample is left in......FIVE.....weeks? At least that is what I think you want to know.

The answer is 318.13 grams.

Step-by-step explanation:

450 - 6.7% = 419.85 grams ---- End of week 1

419.85 - 6.7% = 391.72 grams ---- End of week 2

391.72 - 6.7% = 365.47 grams ---- End of week 3

365.47 - 6.7% = 340.98 grams ---- End of week 4

340.98 - 6.7% = 318.13 grams ------ End of week 5

5 0
2 years ago
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