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3 years ago

Please help 10 points :)

Mathematics

1 answer:

Temka [501]3 years ago

7 0

Answer:

So a quarter means 1/4th of anything. If a half dollar coin contained 1/2 the amount of silver from the original coin then by logic we can say a quarter coin would contain 1/4 of silver of the original coin. Therefore it's worth will be 1/4th of the 1$ coin which would be 1/4$ or 0.25$

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If a company has five employees with annual salaries of $60,000, $70,000, $60,000, $90,000, and $80,000, respectively, what is t

Vanyuwa [196]

well to find the mean you add up all the numbers then divide by the ammount of numbers so it would be 60,000+70,000+60,000+90,000+80,000=360,000 then you divide that by 5 and you end up with 72,000

6 0

3 years ago

6.50 is 25$ of what number?

Ivenika [448]

Answer:

3.85

Step-by-step explanation:

6.50 goes into 25 how many times

6.50×?=25

6.50 divided by 25 = 3.846153846

Simplify

3.85

8 0

3 years ago

The graph shows a system consisting of a linear equation and a quadratic equation.

Lorico [155]

Answer:

(3, 4) and (5, 12)

Step-by-step explanation:

The points where the two curves intersect are the solutions to the system of equations:

(3, 4) and (5, 12)

3 0

4 years ago

In triangle ABC, side AB has a length of 8 cm and side BC has a length of 5 cm. If the triangle has an area of 10 square centime

Vesna [10]

Recall the following formula:

Given a triangle with side lengths a, b, and c. Let the measure of the angle between sides of length a and c be B.

Then, the area of the triangle is given by :

$Area= \frac{1}{2}\cdot a\cdot c \cdot \sin B$ .

In our example we have: Area=10 square cm, a=8 cm, c=5 cm, and we want to find the measure of the angle between the 2 sides a and c.

Substituting in the formula we have:

$10= \frac{1}{2}\cdot 8\cdot 5 \cdot \sin B$

Thus, $10=20 \sin B$ , which means $\sin B = \frac{1}{2}$ .

$\frac{1}{2}$ is the sine of $30^{\circ}$ , but also $150^{\circ}$ .

Answer: both 30, and 150 degrees are possible

8 0

3 years ago

If f(x) = 3x 2 + 5x, find f(-2).

kipiarov [429]

Answer:

f(- 2) = 2

Step-by-step explanation:

To evaluate f(- 2), substitute x = - 2 into f(x)

f(- 2) = 3(- 2)² + 5(- 2) = (3 × 4) - 10 = 12 - 10 = 2

6 0

3 years ago

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