All categories

3 years ago

2(x+b)= ax + c

Mathematics

1 answer:

serious [3.7K]3 years ago

8 0

My best answer is A because the other would no be the answer

You might be interested in

Eight people were asked what the balance of their bank accounts at the beginning of the past week was and how much it increased

Airida [17]

Answer:

Step-by-step explanation:

It's basic plotting its easy :)

8 0

4 years ago

Read 2 more answers

For what value of x is sin x = cos 19º, where 0°< x < 90°?

KonstantinChe [14]

Answer:

71°

Step-by-step explanation:

The cosine of an angle is equal to the sine of its complement:

cos(19°) = sin(90° -19°) = sin(71°)

Comparing to the given expression, we see that x = 71°.

7 0

3 years ago

Find the value of b. Round <br> the nearest tenth.

maria [59]

Answer:

b= sin(43°) * 8 / sin(55°) ≈ 6.7

Step-by-step explanation:

Regarding the law of sines, each angle corresponds to the side opposite of it. Here, that means that the 82 degree angle is opposite of side c (so they correspond) and that the 55 degree angle corresponds to the side with 8cm. However, we are trying to find the length of side b. Therefore, assuming that the side with 8cm is side A, if we know that

sin A / a = sinB/b = sin C / C

= sin(55°)/8 = sinB/b = sin(82°) / c, we can take c out of the equation to get

sin(55°)/8 = sinB/b

If we know sinB, we can multiply both sides by 8 to remove a denominator to get

sin(55°) * b / 8 = sinB

multiply both sides by 8 to remove the other denominator to get

sin(55°) * b = sinB * 8

divide both sides by sin(55°) to isolate the b

b = sinB * 8/sin(55°).

Therefore, if we know sinB, we can figure out the length of b.

Because the angles of a triangle add up to 180 degrees, we can say that

180 = 82 + 55 + angle B

180 = 137 + B

subtract both sides by 137 to isolate B

43 = B

b= sin(43°) * 8 / sin(55°) ≈ 6.7

3 0

3 years ago

The ratio of roosters to chickens is 2 to 8. If there are 5 roosters, how many chickens are there?

Aloiza [94]

Roosters to chickens is 2 to 8

That means where there are 2 roosters, there are 8 chickens.

Simplify the ratio 2:8
The ratio can be simplified to 1:4

So, for 1 rooster, there are 4 chickens.

Now, the question says that if there are 5 roosters, how many chickens will there be?

1 rooster to 4 chickens
5 roosters to ? chickens

We went from 1 rooster to 5 rooster. We multiplied by 5.
To find out how many chickens there are for 5 roosters, multiply 4 chickens by 5.

4 * 5 = 20

Where there are 5 roosters, there will be 20 chickens.

Another way to solve is as follows:

$\frac{2}{8} =\frac{5}{x}\\\\\sf{Cross~multiply}\\\\2x = 5\times 8\\\\2x = 40\\\\x = 20\\\\\boxed{\bf{x=20}}$

Your final answer is 20 chickens.<span />

3 0

4 years ago

Read 2 more answers

What is the greatest common factor of 56 and 49<br>

gulaghasi [49]

(7) is the greatest common factor of 56 and 49

4 0

3 years ago