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Romashka [77]
2 years ago
9

Identify the percent of change as an increase or decrease. Then find the percent of change. Round to the nearest tenth of a perc

ent, if necessary. 2/5 to 4/5
(please show your work if you can :D)
Mathematics
1 answer:
stealth61 [152]2 years ago
3 0

Answer:

Step-by-step explanation:

Increase

Increase = \dfrac{4}{5}-\dfrac{2}{5}=\dfrac{2}{5}

Increase percentage = 2/5 out of 2/5 * 100

                                    =\dfrac{2}{5}*\dfrac{5}{2}*100

                                     = 100 %

                                   

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If |AB| / |DE|=7/5 then what is |AD| / |CD|?DE is parallel to AB
Dmitriy789 [7]

Answer: AD/CD = 2/5

Explanation:

Triangle ABC is similar to triangle DEC on the basis of AA(Angle angle)

Recall, if 2 triangles are similar, it means that the ratio of their corresponding sides are equal. Thus,

AB/DE = BC/EC = AC/DC

From the information given,

AB/DE = 7/5

Thus,

AC/DC = 7/5

AD + CD = AC

(AD + CD)/DC = 7/5

AD/DC + CD/DC = 7/5

AD/DC + 1 = 7/5

AD/DC = 7/5 - 1

AD/DC = 2/5

AD/CD = 2/5

4 0
1 year ago
10 - 9 x 5 + 6 x (-2)
olya-2409 [2.1K]

Answer:

The answer to your equation is -47.

Step-by-step explanation:

Follow the order of operations. First do 9*5=45, and 6*-2 to get -12. Next, just finish the equation from left to right to get -47.

5 0
4 years ago
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What is the probability that no more than 5 of the next 100 skiers who attempt this run will injure themselves
san4es73 [151]
That ratio will be 5/100 because it's 5 out of 100 people

Therefore the probability is <= 5%
6 0
3 years ago
Help me with these please
mixas84 [53]

Answer:

A) SAS

Step-by-step explanation:

The picture gives us that two sides are congruent. We can see that an <em>angle</em> is congruent as well because they share a common point at their tip.

If we look at just the area of intersection, it looks like an X. Think of the X as two lines intersecting. Each side equals 180°, and because both triangles are made up of those sides, we can conclude that the angles are congruent as well.

Hope this helps!

3 0
3 years ago
Write 48 ten thousands, 21 hundreds, and 7 tens in word form and expanded form.
stira [4]

Answer:

48,217 maybe idk

Step-by-step explanation:

8 0
3 years ago
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