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konstantin123 [22]
3 years ago
14

Simplify this expression.

Mathematics
2 answers:
GalinKa [24]3 years ago
6 0
I believe the answer is C
shusha [124]3 years ago
6 0
2 times 10 is 20 and 2 times x is 2x and 2 times -4 is -8 then you subtract add 20 and -8 because they’re like terms giving you 2x+12 or c
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Help fast question 1 and 2 is it c and then b for 1 and 2 will give brainliest
myrzilka [38]
For question 1 the answer is B.

for question 2 the answer is C.
3 0
2 years ago
Dr. Smith's office is open 8 hours a day. The doctor allows 25 minutes for office
Viefleur [7K]

Answer:

Step-by-step explanation:

6 0
2 years ago
What is mAngleMHJ? HELP pLEASE<br><br> 35°<br> 50°<br> 72.5°<br> 92.5°
telo118 [61]

Answer:

50°

Step-by-step explanation:

1) Opposite angles are the same. Therefore,

2x-20=x+15

2x-x=15+20

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6 0
3 years ago
Suppose that $1,000 is deposited into an account that yields
Lana71 [14]
ANSWER : $1,215.51

P= Principal = $1000
R= rate = 5% = 0.05
N= number or periods in 1 year (1 time pre year)
T= time expressed in years = 4 years

A= P (1 + r/n) nxt
= 1,000 (1+ 0.05/1) 1x4
= 1,215.51

6 0
3 years ago
A music buff wants to estimate the percentage of students at a midwestern university who believe that elvis is still alive. how
gulaghasi [49]
Since we are not given any information about the proportion, we will assume the sample proportion to be 0.50

so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)

The margin of error for population proportion is calculated as:

E=z* \sqrt{ \frac{p(1-p)}{n} }  \\  \\ &#10; \frac{E}{z} = \sqrt{ \frac{p(1-p)}{n} }  \\  \\ &#10;( \frac{E}{z} )^{2}= \frac{p(1-p)}{n} \\  \\ &#10;n= p(1-p)* (\frac{z}{E})^{2}  \\  \\ &#10;n=271

This means 271 students should be included in the sample
5 0
3 years ago
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