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2 years ago

How can you solve the literal equation y-3x=13

1 answer:

7 0

So to begin, you need to find x and y. If you have answer options, plug those in. If you don't, your toast. Just kidding :)
So, your answer would be y3=13. I think you can handle the rest. 3 * what equals 13?

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Can you help me find the missing value to the nearest hundredth?! cos□= 2/5 Thank you ❤

Aleksandr [31]

Answer:

66.42°

Step-by-step explanation:

Given

cos ? = $\frac{2}{5}$ , then

? = $cos^{-1}$ ( $\frac{2}{5}$ ) ≈ 66.42° ( to the nearest hundredth )

7 0

3 years ago

The price of a stock decreased by 60 cents one week, decreased 10 cents the next week, and decreased another 20 cents the follow

mel-nik [20]

Hi there! Hopefully this helps!

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

It decreased by 30 cents per week.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The average rate of change is calculated as:

the ratio of the sum of the change in the three weeks divided by the number of weeks. (The number of weeks being 3)

Rate of change = $\frac{-60 -10 -20}{3}$ .

(-60 + -10 + -20 = -90). So, to simplify it:

$\frac{-90}{3}$ = -30

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Incase you are confused:

Since the average rate of change is negative, this means that the stock price has decreased.

3 0

2 years ago

True or False:

DIA [1.3K]

True. If you're just changing the form, yes. But remember when you change one side of an equation, you must change the other in the same way.

7 0

3 years ago

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If triangle RST equals triangle XYZ which statement must be true

alexandr402 [8]

Can you please attach a photo or put up answer choices? It would help a lot. Thanks.

4 0

2 years ago

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Triangle ABC underwent a sequence of transformations to give triangle A′B′C′. Which transformations could not have taken place?

IrinaVladis [17]

Answer:

C. a rotation 180° clockwise about the origin followed by a reflection across the line y = x

Step-by-step explanation:

Let us assume that the coordinate of A in triangle ABC is A(x, y)

A) If there is a reflection across line y = x, the new coordinate is at A'(y, x).

If a reflection across the line y = -x is then followed, the new coordinate is at A"(-x, -y)

B) If there is a reflection across line x axis, the new coordinate is at A'(x, -y).

If a reflection across the line y axis is then done, the new coordinate is at

A"(-x, -y)

C) If there is a rotation 180° clockwise about the origin, the new coordinate is at A'(-x, -y).

If a reflection across the line y = x is then followed, the new coordinate is at A"(-y, -x)

D) B) If there is a reflection across line y axis, the new coordinate is at A'(-x, y).

If a reflection across the line x axis is then done, the new coordinate is at

A"(-x, -y)

Since only option C has a different result from the remaining options, hence option C would not five triangle A'B'C'

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2 years ago

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