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3 years ago

Help me really quick

Mathematics

2 answers:

kati45 [8]3 years ago

8 0

If you can't figure out how to do it, you can always use your answer choices, so for example, use choice a (21 degrees). Plug in 21 for x for both equations. So for the first equation that would be 7(21)-1= 146 and second equation 3(2)-9= 54. Then you would add the results, 146+54=200. In that case, choice 21 is wrong because both of these angles should equal to 180 since it is a supplementary angle. I hope that helped.

Luden [163]3 years ago

3 0

the answer is 19. you’re supposed to add them up to 180

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Hannah is making calzones to sell her restaurant she starts with nine cans of tomato sauce and then use is 9/10 of the cans for

Mademuasel [1]

Answer:

About 8 cans.

Step-by-step explanation:

Given:

She starts with nine cans of tomato sauce.

Then use is 9/10 of the cans for her first batch of calzones

To find:

How many cans of tomato sauce does Hannah use for the first batch of calzones ?

Solution:

She starts with number of cans = 9

Then use is $\frac{9}{10}$ of the cans.

Now, we will find number of cans used for the first batch of calzones by multiplying number of cans she starts with by fraction of cans she used for the first batch of calzones .

$\frac{9}{10} of 9 cans = \frac{9}{10} \times9\\\frac{81}{10} = 8.1$

Therefore, number of cans used for the first batch of calzones is about 8 cans.

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4 years ago

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3 years ago

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Ratling [72]

B is your answer
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3 years ago

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uysha [10]

Answer:

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Step-by-step explanation:

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2 years ago

5 - 3tan3x = 0 trên -π< x < π.

serious [3.7K]

Answer:

x = 0.343

Step-by-step explanation:

We want to solve:

5 - 3tan(3x) = 0

such that:

-π< x < π

where π = 3.14

then:

-3.14 < x < 3.14

Let's solve the equation:

5 - 3tan(3x) = 0

-3tan(3x) = -5

tan(3x) = -5/-3 = 5/3

Now we can use the inverse tan function, Atan(x).

Remember that:

Atan( tan(x) ) = tan( Atan(x)) = x

Then if we apply that function to both sides, we get:

Atan( tan(3x)) = Atan(5/3)

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x = Atan(5/3)/3 = 0.343

4 0

3 years ago