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3 years ago

Can someone plzzz help me with number 8 plzz show work plzzzz

Mathematics

1 answer:

Ksju [112]3 years ago

7 0

Answer:

x = 7, y = 28

Step-by-step explanation:

We're given that ABCD is a rectangle, so we know that all sides opposite from each others are equal in length. This also means that each part of the criss-cross-X thing inside the rectangle are equal in length to each others as well. (AE = BE = DE = CE).

AC = 100 from the given picture, which means half of that from AE would be 50. Since DE is the same length as AE, we can set x²+1 = 50 and solve for x. We get x = 7.

To solve for y, we know that opposite sides of a rectangle are of the same length. So AD = BC.

The question already gave us the equation for those sides so we just need to set them equal to each other.

2y + 5 = 3y - 23

sovle for it and you get y = 28.

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Evan invested $800 in an account that pays 3.25% interest compounded annually.

Aleksandr [31]

Answer:

Evans would have $852.8

Step-by-step explanation:

Given

$PV = \$800$

$r = 3.25\%$

$t = 2$

$n = 1$ --- annually'

Required

The future value

This is calculated using:

$FV = PV*(1 + \frac{r}{n})^{nt$

So, we have:

$FV = 800 * (1 + 3.25\%/1)^{2*1}$

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$FV = 800 * (1 .0325)^2$

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3 years ago

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3 years ago

Amadahy wants to buy a card and two gifts for her friend. Cards cost 3.49 each and gifts cost $10.63 each. Amadahy has a 20$ bil

BartSMP [9]

Answer:

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3 years ago

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Ede4ka [16]

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3 years ago

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A tipping platform is a ramp used to unload trucks. How high is the end of an 100 foot ramp when it is tipped by a 30 degree ang

Naily [24]

According to the information given, the ramp would be 50 feet high. (However, that seems really high. Did you type your problem correctly?)

If you draw a picture, you will see that you can set up a cosine ratio to solve this problem. With a 30 degree angle of depression, the angle we are going to use 60 degrees.

We can set up the following equation:

cos(60) = x / 100
0.5 = x / 100
50 = x

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3 years ago