All categories

3 years ago

Please answer correctly !!!!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Vsevolod [243]3 years ago

8 0

Answer: 68°

Explanation: This is a complementary angle. A complementary angle is made of two angles which sum to 90°. Subtract 22 from 90 degrees (90-22) to get the missing angle. Hope this helps :)

rodikova [14]3 years ago

5 0

A+22°=90° (SUM OF COMPLEMENTRY ANGLES )

A=90°-22°

A=68° ANSWER.

You might be interested in

Justify each step in the solution of 5x+15=0

ratelena [41]

Subtract 15 from both sides.

5x=-15

Divide by 5

x=-5

4 0

4 years ago

Read 2 more answers

Battery packs in electric go-carts need to last a fairly long time. The run-times (time until it needs to be recharged) of the b

pav-90 [236]

Answer:

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 2, \sigma = 0.33$

What is the minimum level for which the battery pack will be classified as highly sought-after class

At least the 100-10 = 90th percentile, which is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.

$Z = \frac{X - \mu}{\sigma}$

$1.28 = \frac{X - 2}{0.33}$

$X - 2 = 0.33*1.28$

$X = 2.42$

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

4 0

3 years ago

Mr. Stevens saved $30 buying a computer at 15% off. What was the original price of the computer?

anastassius [24]

15% = $30

1% = 30 ÷ 15
1% = $2

100% = 2 x 100
100% = $200

Answer: The original price of the computer is $200.

8 0

3 years ago

Read 2 more answers

In the first semester, Jonas took seven tests in his math class. His scores were: 88 81 94 84 100 94 96.

maksim [4K]

The median is the middle-most number. First we need to put the numbers in order from lowest to highest:

81 84 88 94 94 96

The easiest way to find the median is to cross out the first and last number and then continue until you reach the middle.

So cross out 81 and 96:
84 88 94 94 are left.

Cross out 84 and 94:
88 and 94 are left.

Since we are left with 2 different numbers, we need to find the average of them and that’s our median. (88 + 94)/2 = 91

91 is the median.

3 0

3 years ago

Solve. {2x+7y=2} {x+y=-1}

MaRussiya [10]

So you need to do substitution. First solve the easier equation for 1 variable.
x+y=-1 now subtract x to get y=-x-1. Then plug this into the top equation to get 2x+7(-x-1)=2. Next distribute to get 2x+-7x-7=2. Now combine like terms to get -5x=9 so x=-5/9. Now you have to plug this back into the original equation to get y. 2(-5/9)+7y=2, so -10/9 +7y=2. No move terms around to get 7y=28/9 then divide by 7 to get y= 4/9

3 0

4 years ago