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vampirchik [111]
2 years ago
8

Can someone help me with math I need help I will attempt to give y’all help too!

Mathematics
1 answer:
zzz [600]2 years ago
6 0
<h3>Answer:  52.5 (choice A)</h3>

===========================================================

Explanation:

Take close notice of how the angle markers are drawn.

The angles marked with a single curve or arc pair up together and are congruent. In the triangle on the left, the side 16 is opposite this angle. The triangle on the right has 42 opposite this angle.

So we can form the fraction 16/42 which will help form the proportion later.

----------------

Now focus on the double arc markings. The triangle on the left has side 20 opposite the double arcs. The triangle on the right has the side x opposite the double arcs.

This forms the fraction 20/x

-----------------

Set the two fractions we found equal to one another. Isolate x.

16/42 = 20/x

16x = 42*20

16x = 840

x = 840/16

x = 52.5

Side note: other set up equations can be done.

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What is unknown number in proportion?
elena-14-01-66 [18.8K]

Answer:

x = 2.4/20= 0.12

Step-by-step explanation:

Multiply both sides by 4 to eliminate the fraction 1/4:

1      20

--- = ------

x      2.4

Next, we cross-multiply.  This eliminates the fractions:

20x = 2.4

Dividing both sides by 20 results in an equation for x:  x = 2.4/20= 0.12

4 0
3 years ago
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Reptile [31]

Answer:

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18-1

17 is the answer

5 0
3 years ago
5) What does QRST → Q'R'S'T' mean?
Dima020 [189]

Answer:

QRST becomes Q prime, R prime, S prime, T prime.

Step-by-step explanation:

Any figure that is rotated, translated or reflected on the corrdinate plane is considered a prime (as long as it is congruent (the same as, or equal to) with the original). The apostrophe stands for prime.

Ex. If you reflect triangle ABC across one of the axes, the original triangle will continue being ABC, while the reflection would be A' B' C' (or A prime, B prime, C prime). I hope this helps :)

8 0
3 years ago
Find the z-score for a value of 16 with a mean of 8 and a variance of 5 g
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3 0
3 years ago
A square has an area of 100m2. What is the length of each side? please help and explain!!!
Salsk061 [2.6K]
The length is 10 meters.

A square has 4 sides that are all the same length. This means that if one side was, say, 20 cm, every side would be 20 cm.

Recall that to solve for area, you simply have to multiply the length by the width. Since a square has all equal sides, the length and the width will be equal.

Since we know that the area is 100 m^2, we can make an equation:
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-T.B.
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3 years ago
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