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3 years ago

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Question 8 (1 point)

2 answers:

Bogdan [553]3 years ago

8 0

False! Hope this helps u out

nordsb [41]3 years ago

5 0

Answer: False

Step-by-step explanation: Changing the number does affect the relationship if you switch it you might get greater than 0 or less than 0 if yo u switch them.

Hopes this helps :)

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Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together the

klasskru [66]

The rate charged per hour by each mechanic was: x = 75 $ / hr and y = 115 $ / hr.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Given;

The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours.

Together they charged a total of $3225.

For this case we have the following variables:

x be the amount of $ / hr that the mechanic obtains 1.

y be the amount of $ / hr obtained by mechanic 2.

An equation to express this would be:

x + y = 190

20x + 15y = 3225

Solving the system of equations we have:

20x + 15(190 -x) = 3225

20x + 2850 - 15x = 3225

5x = 375

x = 75

simililary

y = 190 - x

y = 115

Hence, the rate charged per hour by each mechanic was:

x = 75 $ / hr

y = 115 $ / hr

Learn more about equations here;

brainly.com/question/10413253

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6 0

2 years ago

Which expression represents the approximate length of Line segment B C?<br><br> use sines law

Harrizon [31]

The expression is: a. StartFraction (3) sine (66 degrees) Over sine (38 degrees) EndFraction

Step-by-step explanation:

The Law of Sines is written as;

$\frac{a}{sinA} =\frac{b}{sinB}=\frac{c}{sinC}$

where a, b,c are sides of the triangle and side a faces angle A , side b faces angle B and side c faces angle C.

In this case,

Dividing side AB by sin 38° equals dividing side BC by sin 66°

$\frac{3}{sin38} =\frac{BC}{sin66} \\\\$

3/0.61566147532 = BC/0.91354545764

4.87280773645 = BC/0.91354545764

BC=4.87280773645*0.91354545764 =4.45153137359

Approximate length is = 4.5 and the expression is: 3 sine 66°/ sine 38°

Learn More

Law of sines :brainly.com/question/3617061

Keywords: expression, length, line segment

#LearnwithBrainly

6 0

3 years ago

Please help i really don't understand

Bezzdna [24]

Answer:

3.75

Step-by-step explanation:

That is the decimal

7 0

3 years ago

Read 2 more answers

Compute the following: <br><br> a. 6720<br> b. 5.6<br> c. 3360<br> d. 560

umka21 [38]

Answer:

d. 560

Step-by-step explanation:

We have to find the value of $^{8}C_{3} \times ^{5}C_{2}$ .

Now, we know the formula of $^{n}C_{r}$ is given as $\frac{n!}{r! \times (n - r)!}$ .

Here, n! = 1 × 2 × 3 × 4 × .......... × (n - 1) × n.

So, in our case, $^{8}C_{3} \times ^{5}C_{2}$

= $\frac{8!}{3! \times (8 - 3)!} \times \frac{5!}{2! \times (5 - 2)!}$

= $\frac{6 \times 7 \times 8}{3!} \times \frac{4 \times 5}{2!}$

= 56 × 10

= 560 (Answer)

8 0

3 years ago

A publisher needs to send a money box to a local bike retailer and will send bucks and a combination of small and large boxes. E

Amiraneli [1.4K]

Answer: ok

Step-by-step explanation:

Ok

8 0

4 years ago