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2 years ago

Can someone help me do this

Mathematics

2 answers:

Llana [10]2 years ago

5 0

180-60=120
60 is from the complementary angle

mylen [45]2 years ago

3 0

It’s 120 because exterior angle is equal to a + b in this case that’s 50 and 70 so 50 + 70 =120

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A company makes and sells charm bracelets. The cost of producing x bracelets is represented by the function

Serggg [28]

P(x) = 12x – 180

Given:

A company makes and sells charm bracelets.

The cost of producing x bracelets is represented by the function C(x) = 180 +

The revenue earned from selling x bracelets is represented by the function

R(x) = 20x.

Explanation of terms:

For x bracelets,

Cost of production is C(x); C(x) = 180 + 8x

Revenue earned is R(x); R(x) = 20x.Profit made is P(x); P(x) is unknown

Profit made = Revenue earned – Cost of production

∴ P(x) = R(x) – C(x)

P(x) = 20x – (180 + 8x)

P(x) = 20x – 180 – 8x

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3 years ago

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Mr.Jimerson earns $24 per hour working. He qualifies for a 15% raise in salary. What is his salary after his raise?

miv72 [106K]

(sorry if this is wrong but hope this helps)

ANSWER: $27.60

STEP BY STEP:

You have to multiply 24 by 15%. Start by changing 15% into a decimal of .15. Then multiply 24 by .15 to get an answer of $3.60. This is how much more Mr. Jimerson will earn. Then add the original amount he earned by the amount the is now gaining. This gets you $27.60.

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3 years ago

The speed of the current in a creek is 5 mph. A person clan kayak 3 mi upstream in the same time that it takes him to kayak 13 m

Brut [27]

Answer:

Step-by-step explanation:

0) the basic formula is: L=v*t, where L - distance, v - speed/velocity; t - time;

1) if the person's speed in still water is 'v' and the speed of water is 5 (according to the condition), then the upstream speed is 'v-5' and the downstream speed is 'v+5';

2) according to the condition the upstream time and the downstream time are the same, it means t₁=t₂=t, where t₁=upstream time and t₂=downstream time;

3) according to the items above it is possible to make up the equation of the upstream travel: t(v-5)=3; ⇒ t=3/(v-5);

4) according to the items above it is possible to make up the equation of the downstream travel: t(v+5)=13; ⇒ t=13/(v+5);

5) if t=3/(v-5) and t=13/(v+5), then

$\frac{3}{v-5} =\frac{13}{v+5}; \ => \ v=8.$

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2 years ago

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castortr0y [4]

Answer: D. 72 m

Step-by-step explanation:

The formula for the volume of a cone is Volume = pi times radius squared and then times the height, and then divided by 3.

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But be careful, we're not done yet... We still have to divide by 3

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we can be sure this answer is correct because the other answers are clearly too big

here's your answer, hope this helps :)

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2 years ago

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VladimirAG [237]

Answer:

They most have common denominators.

Step-by-step explanation:

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That is why we find LCD to be $ab$ .

Then,

$\frac{p}{a} +\frac{q}{b} =\frac{pb+qa}{ab}$

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$\frac{p}{a} , \frac{q}{b}$

where p,a,q, b are integers, a and b the denominators are not 0, i.e. $a,b\neq 0$

We can add rational expressions only if their denominator is same.

That is why we find LCD to be $ab$ .

Then,

$\frac{p}{a} +\frac{q}{b} =\frac{pb+qa}{ab}$

So, the correct answer is the last option that we can sum rational expressions if they have common denominator.

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3 years ago