2 years ago

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP PLS PLS HELP ASAP

Mathematics

1 answer:

Sati [7]2 years ago

8 0

The first one false and the second one true so sorry if it's wrong-

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Which algebraic expression represents “Nicholas tripled his workout time”?

PolarNik [594]

Answer:

3 w

Step-by-step explanation:

because if you think about it nick was doing a lot and then he needs to triple so the equation would be 3 w

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2 years ago

This week beth made 10 more then twice the number of cookies she made last week,x. Which expression represents the total numbwr

Lapatulllka [165]

2x + 10 is the answer to the question

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3 years ago

How do I find f in this question

Svetllana [295]

Answer:

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3 years ago

In △ABC,a=13, b=14, and c=18. Find m∠A.

aev [14]

Answer:

m∠A = 45.86°

Step-by-step explanation:

A rough sketch of the triangle is shown in the attached pic.

When 3 sides are given and we want to solve for an angle, we use the Cosine Rule. Which is:

$p^2=a^2 +b^2 -2abCosP$

Where a, b, p are the lengths of 3 sides (with p being the side opposite of the angle we are solving for) and P is the angel we want to solve for

Thus, we have:

$p^2=a^2 +b^2 -2abCosP\\13^2=14^2 +18^2-2(14)(18)CosA\\169=520-504CosA\\504CosA=351\\CosA=\frac{351}{504}\\CosA=0.6964\\A=Cos^{-1}(0.6964)=45.86$

7 0

4 years ago

Read 2 more answers

Some one pls help need soon

pav-90 [236]

Answer:

1. $-3x^{2} +6x+4$

2. $3x^{2} -19x-14$

Step-by-step explanation:

1. Just subtract them. (To subtract easier, ignore the variables and subtract regularly. When you're done go back and put the variables back in)

2. Foil

$(3x +2)(x-7)$

$3x^{2} -21x+2x-14\\3x^{2} -19x-14$

8 0

3 years ago