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Sever21 [200]
4 years ago
15

What is -2(3r + 4) + 7r

Mathematics
2 answers:
egoroff_w [7]4 years ago
8 0

<em>Answer,</em>

= r - 8

<u><em>Hope this helps :-)</em></u>

MariettaO [177]4 years ago
7 0

If you multiply and add everything it would be

-6r-8+7r

COMBINE LIKE TERMS:

-6r+7r=r-8

The answer would be r-8

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4 years ago
Half of a set of the parts are manufactured by machine A and half by machine B. Ten percent of all the parts are defective. Six
baherus [9]

Answer:

The probability that a part was manufactured on machine A is 0.3

Step-by-step explanation:

Consider the provided information.

It is given that Half of a set of parts are manufactured by machine A and half by machine B.  

P(A)=0.5

Let d represents the probability that part is defective.

Ten percent of all the parts are defective.

P(d) = 0.10

Six percent of the parts manufactured on machine A are defective.

P(d|A)=0.06

Now we need to find the probability that a part was manufactured on machine A, and given that the part is defective :

P(A|d) =\frac{P(A \cap d)}{P(d)}

P(A|d) =\frac{P(d|A)\times P(A)}{P(d)}\\P(A|d)= \frac{0.06\times 0.5}{0.10}

P(A|d)= 0.3

Hence, the probability that a part was manufactured on machine A is 0.3

8 0
3 years ago
Is P 90 degrees from the origin, Q 180 degrees from the origin, and R 270 degrees from the origin?
krek1111 [17]

Answer:

Step-by-step explanation:

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2.

Q(-4,-5) is in 4th quadrant.

Q(4,5) is in 1st quadrant.

so it is 180° rotation in the clockwise direction.

3.

R(1,7) is in 1st quadrant.

R(7,-1) is in 4th quadrant.

Hence it is 90° rotation about the origin in clockwise direction.

4 0
4 years ago
Erica watched 2.7 miles to and from work every day for an entire year how many miles did he walk
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7 0
4 years ago
The sum of 2 rational numbers is 5/2. if one of the number is -7/3. then find the other number.
serg [7]

Answer:

can you help me on myquestio

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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