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3 years ago

I need help not sure how to answer this

Mathematics

2 answers:

Alja [10]3 years ago

6 0

Answer33

Step-by-step explanation:

otez555 [7]3 years ago

3 0

Answer:

D. 123

Step-by-step explanation:

If angle BAC is 57, then so is the one opposite to it, angle BCD. So together, they would make 114 degrees (57 +57).

If there are a total of 360 degrees in a rhombus and 114 are taken up, then that means we have 246 degrees left (360 - 114 = 246).

These 246 degrees are equally shard by angles B and D. Therefore, we just have to divide by 2 to get the answer:

246 / 2 = 123. And that's your answer!

Hope this helps! Please rate this answer and mark it as Brainliest! :)

Have an awesome day! :)

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Find the derivative

zalisa [80]

First use the chain rule; take $y=\dfrac{x+5}{x^2+3}$ . Then

$\dfrac{\mathrm df}{\mathrm dx}=\dfrac{\mathrm df}{\mathrm dy}\cdot\dfrac{\mathrm dy}{\mathrm dx}$

By the power rule,

$f(x)=y^2\implies\dfrac{\mathrm df}{\mathrm dy}=2y=\dfrac{2(x+5)}{x^2+3}$

By the quotient rule,

$y=\dfrac{x+5}{x^2+3}\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{(x^2+3)\frac{\mathrm d(x+5)}{\mathrm dx}-(x+5)\frac{\mathrm d(x^2+3)}{\mathrm dx}}{(x^2+3)^2}$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{(x^2+3)-(x+5)(2x)}{(x^2+3)^2}$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{3-10x-x^2}{(x^2+3)^2}$

$\dfrac{\mathrm df}{\mathrm dx}=\dfrac{2(x+5)}{x^2+3}\cdot\dfrac{3-10x-x^2}{(x^2+3)^2}$

$\implies\dfrac{\mathrm df}{\mathrm dx}=\dfrac{2(x+5)(3-10x-x^2)}{(x^2+3)^3}$

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3 years ago

Pc Richard and son are selling a drone for 179.99 for 10% off and $20 off to the first 100 customers what’s the price

den301095 [7]

Answer:

The price for the first 100 customers is $142.00.

Step-by-step explanation:

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Step 2: $179.99 - $17.99 = $162.00

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3 years ago

Plz help me im desparate....but actually dothe question and not just come up w/ a phony anwser.....

olga nikolaevna [1]

It might be helpful to write up the question like this:
300=100%
3=1%
120=

If you do this, you’ll see that the question is really easily solved by just finding the number necessary to multiply 3 with to get 120.

If you understand this, the rest should follow.

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3 years ago

Karen wants to rent a car for 5 days, and shes interested in the loss damage waiver but not the collision damage waiver. If the

DanielleElmas [232]

Add $35 + $55 and you get 90, multiply 90 by 5 and you get $450. so the answer is A. hope this helped.

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3 years ago

Read 2 more answers

4 children want to share 10 submarine sandwiches so that everyone gets the same amount. How much can each child have?

kifflom [539]

Answer:

Each kid will get 2.5 submarine sandwiches

Step-by-step explanation:

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2 years ago

I need help not sure how to answer this​

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