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3 years ago

Can u please help me and show me how u got that answers.

Mathematics

2 answers:

GREYUIT [131]3 years ago

6 0

C. 20% because 15 goes into 75 5 times, and to find the percentage you would divide 100 by that number, 5, to get 20. So he has gone 20%

liberstina [14]3 years ago

4 0

100*15/75 part/whole..........

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Diego lives 1/2 mile from school what is 50% of 1/2 mile explain

galben [10]

Answer:

$\frac{1}{4}$ mile

Step-by-step explanation:

note that 50% = $\frac{50}{100}$ = $\frac{1}{2}$

and $\frac{1}{2}$ of $\frac{1}{2}$

= $\frac{1}{2}$ × $\frac{1}{2}$

= $\frac{1(1)}{2(2)}$ = $\frac{1}{4}$

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3 years ago

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3 years ago

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Find the surface area of the prism.

Otrada [13]

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3 years ago

State one form of the Law of Cosines and provide a trick for writing the other two forms and explain when Law of Cosines should

Yuki888 [10]

Solving for Angles

$\displaystyle \frac{a^2 + b^2 - c^2}{2ab} = cos∠C \\ \frac{a^2 - b^2 + c^2}{2ac} = cos∠B \\ \frac{-a^2 + b^2 + c^2}{2bc} = cos∠A$

* Do not forget to use the inverse function towards the end, or elce you will throw your answer off!

Solving for Edges

$\displaystyle b^2 + a^2 - 2ba\:cos∠C = c^2 \\ c^2 + a^2 - 2ca\:cos∠B = b^2 \\ c^2 + b^2 - 2cb\:cos∠A = a^2$

You would use this law under two conditions:

One angle and two edges defined, while trying to solve for the third edge
ALL three edges defined

* Just make sure to use the inverse function towards the end, or elce you will throw your answer off!

_____________________________________________

Now, JUST IN CASE, you would use the Law of Sines under three conditions:

Two angles and one edge defined, while trying to solve for the second edge
One angle and two edges defined, while trying to solve for the second angle
ALL three angles defined [of which does not occur very often, but it all refers back to the first bullet]

* I HIGHLY suggest you keep note of all of this significant information. You will need it going into the future.

I am delighted to assist you at any time.

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3 years ago

Which expression represents a difference of squares? A. 4x2 − 16x B. t2 + 100 C. 25k − 64 D. 81 − 49y2

LuckyWell [14K]

Answer:

I believe it would be C, not 100% sure though

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3 years ago