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Elena-2011 [213]
2 years ago
7

I need help please I’m confused

Mathematics
2 answers:
Ahat [919]2 years ago
8 0

Answer:

The answer is 50 degrees

Step-by-step explanation:

The small box at the corner of the triangle indicates that the triangle is exactly 90 degrees, or a right angle. In order to solve the expression, you would need to do 40 + x = 90, which would be x = 50

Elena-2011 [213]2 years ago
7 0

Answer:

It should be 40 degrees, If you have a protractor, you could measure it.

Step-by-step explanation:

I think it's 40 degrees because if you fold it in half, it would probably match.

Not the best explanation, sorry.

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Simplify the expression.<br> 7x2 + 3 - 5(x^2- 4)
polet [3.4K]

Answer:

2x² + 23

Step-by-step explanation:

Distribute the -5 and combine like terms.

7x² + 3 - 5(x² - 4) =

= 7x² + 3 - 5x² + 20

= 2x² + 23

3 0
2 years ago
What is the distance between (8, -3) and (4, -7)?<br> Choose 1 answer
Mila [183]

Answer:

Option C √32 is correct

Step-by-step explanation:

Here,

x₁ = 8

x₂ = 4

y₁ = (-3)

y₂ = (-7)

Now,

By Using Distance Formula

<em>D = √(x₂ - x₁)² + (y₂ - y₁)²</em>

<em> </em><em> </em><em> </em><em> </em>= √(4 - 8)² + [(-7) - (-3)]²

= √(-4)² + [(-7) + 3]²

= √16 + (-4)²

= √16 + 16

<u>D = √32</u>

Thus, The distance between (8, -3) and (4, -7) is √32

<u>-TheUnknown</u><u>S</u><u>cientist</u>

3 0
2 years ago
Read 2 more answers
Three workers at a fast food restaurant pack the take-out chicken dinners. john packs 45% of the dinners, mary packs 25% of the
lyudmila [28]
To calculate this probability is often easier to calculate the complement
the prob that we are looking for is 1-P(No salt packed in dinner)
Note: No salt packed with dinner is the complement event of having salt packed within
so let's find this probability
He is what we know
if John packs 4/45 chance no salt included
if Sue packs 3/70 chance no salt
if Marry packs 2/25 No salt
We are looking into probability is the sum (note these events are disjoint)
final result should be 1- that sum
5 0
3 years ago
Read 2 more answers
Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 11, Q1 at 22. 5
Slav-nsk [51]

The median, because the data distribution is skewed to the right.

Given that

The box plot with the following parameters:  

Minimum value at 11,

First Quartile, Q1 at 22.5,

Median at 34.5,

Third Quartile, Q3 at 36,

Maximum value at 37.5.

According to the question

When a distribution has a longer tail to one of its sides, then it is said to be skewed.

Since the tail is longer to the left, it is said to be left-skewed.

The data distribution is skewed to the left because the median (34.5) is closer to the third quartile (36) than to the first quartile  (22.5).

For skewed data, we always prefer the median because it is less affected by the outliers and if the mean is chosen, the value of the mean is biased towards the side that has larger values while the median does not get affected by it. So, we choose the median.

For skewed distributions, the median is the best measure of center.

Hence, the median, because the data distribution is skewed to the right.

To know more about Mean click the link given below.

brainly.com/question/2508120

3 0
2 years ago
Carlos worked 31.5 hours at a hospital as a volunteer. This represents 87.5% of his school’s requirement of community service. H
Artist 52 [7]
<span> 36 hours is the requirement</span>
8 0
3 years ago
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