All categories

3 years ago

90+(x+5)+(2x-2)=180 Will you please help me solve this

Mathematics

2 answers:

pshichka [43]3 years ago

7 0

Answer:

29 is the answer.

Step-by-step explanation:

90 + (x + 5) + (2x - 2) = 180

=> 90 + x + 5 + 2x - 2 = 180

=> 93 + x + 2x = 180

=> 3x = 180 - 93

=> 3x = 87

=> 29

Therefore, 29 is the answer.

Zepler [3.9K]3 years ago

6 0

Step-by-step explanation:

90 + (x + 5) + (2x - 2) = 180
x + 5 + 2x - 2 = 180 - 90
3x + 3 = 90
3x = 87
x = 29

You might be interested in

Families USA, a monthly magazine that discusses issues related to health and health costs, survey 19 of its subscribers. It foun

s344n2d4d5 [400]

Answer:

$10,151 $< \mu$ $11448.12

$n = 158$

Step-by-step explanation:

From the question we are told that

The sample size is n = 19

The sample mean is $\= x =$ $10,800

The standard deviation is $\sigma =$ $1095

The population mean is $\mu =$ $225

Given that the confidence level is 99% the level of significance is mathematically represented as

$\alpha = 100 -99$

$\alpha = 1$ %

=> $\alpha = 0.01$

Now the critical values of $\alpha = Z_{\frac{\alpha }{2} }$ is obtained from the normal distribution table as

$Z_{\frac{0.01}{2} } = 2.58$

The reason we are obtaining values for $\frac{\alpha }{2}$ is because $\alpha$ is the area under the normal distribution curve for both the left and right tail where the 99% interval did not cover while $\frac{\alpha }{2}$ is the area under the normal distribution curve for just one tail and we need the value for one tail in order to calculate the confidence interval

Now the margin of error is obtained as

$MOE = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

substituting values

$MOE = 2.58* \frac{1095 }{\sqrt{19} }$

$MOE = 648.12$

The 99% confidence interval for the population mean yearly premium is mathematically represented as

$\= x -MOE < \mu < \= x +MOE$

substituting values

$10800 -648.12 < \mu < 10800 + 648.12$

$10,151 $< \mu$ $11448.12

The largest sample needed is mathematically evaluated as

$n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{\mu} ]$

substituting values

$n = [ \frac{ 2.58 * 1095}{225} ]^2$

$n = 158$

6 0

4 years ago

PLEASE HELP PLEASE PLEASE

vovikov84 [41]

The central angle is about 74.8426. Try using the website Omni to help you out. It contains an arc length calculator.

6 0

3 years ago

Read 2 more answers

What is the distance between 4+3i and 6-2i

Reil [10]

4=3i ----> (4,3) 6-2i ------> (6,-2)

x1 y1 x2 y2

(4 , 3) (6 , -2) d=√(x2-x1)^2 +(y2-y1)^2

d=√(6-4)^2+(-2-3)^2 -----> d=√2^2+(-5)^2 ----> d=√29

7 0

3 years ago

There are 350 students at a middle school dance, where ratio of 7th graders to 8th graders is 3:4 how many of the students at th

Mademuasel [1]

Answer:

150 7th Graders and 200 8th graders

Step-by-step explanation:

Basically, add the parts of the ratio together and create 7. Then, to find out how much 1 part is equal to, divide the amount of students by the number of parts - so it would be like 350/7 = 50.

So now you know that 1 part is equal to 50 students. From here, you can multiply the two amounts of parts by 50.

3 x 50 = 150 7th Graders

4 x 50 = 200 8th Graders

4 0

3 years ago

How did Captain Hook Get Injured?

BARSIC [14]

Injured by Peter in the battle. He was smacked in the face by a Janet

8 0

3 years ago

Read 2 more answers