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Ne4ueva [31]
3 years ago
5

Y=-2/3x-5 what is y?

Mathematics
1 answer:
saul85 [17]3 years ago
4 0
That is the answer i mean you can't simplify it or anything that is the answer
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Since BC is parallel to DE, triangles ABC and ADE are similar. What are the lengths of the unknown sides?
NikAS [45]

Answer:

C

Step-by-step explanation:

Step 1: find BC

Given Triangles ABC and ADE are similar,

\frac{AB}{AD} = \frac{BC}{DE}

BC = \frac{AB}{AD} x DE

= \frac{8}{8 + 4} x 9

= 6 cm

Step 2: use Pythagorean theorem to find AC and / or AE

Consider triangle ABC,

by Pythagorean theorem,

AB² + BC² = AC²

AC² = 6² + 8² = 100

AC = √100 = 10 (answer... we can see that C is the only one with AC=10.

Step 3: Verify.. even though we know that it is C because AC  = 10,  you can verify that the ansewer is correct by finding CE and confirming that CE=5

By using similar triangles ABC and ADE,

AC/AE = AB / AD

AE = AD/AB x AC = 12/8 x 10 = 15

CE = AE - AC = 15 - 10 = 5 (answer confirmed)

5 0
3 years ago
The polygons are similar. Find the value of X.
weqwewe [10]

Answer:

the polygon on the right side is doubled the size of the one on the left, therefore x=11

3 0
3 years ago
A scientist makes an acid solution by adding drops of acid to 1.2 L of water. The final volume of the acid solution is 1.202 L.
laila [671]

Answer:

40 drops

Approximately 0.166 %

Step-by-step explanation:

It would be easier to work the same units for volume

Since there are 1000 ml in a liter

Original water volume 1.2 L = 1.2 x 1000 = 1200 mLl

The final volume of the acid-water solution = 1.202 L = 1202 mL

So total volume of acid added = 1202-1200 = 2 mL

Each drop of acid is 0.05 mL

Number of drops added = 2/.05 = 40 drops

Percent of acid in acid solution = (Volume of acid added)/(Final volume) x 100 = (2/1202) ≈ 0.00166 x 100 ≈ 0.166 %

7 0
2 years ago
What is the standard deviation for the data given: {12,13,29,18,61,35,23}
BartSMP [9]

The answer is 13.714 :)

3 0
3 years ago
What is the sum of the 10th square number and the 2nd cube number?
MakcuM [25]

Answer:

100 + 27

127

bcoz 10th square no root is 10 and 2nd cube no root is 3

6 0
3 years ago
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