MATHEMATICS MIDDLE SCHOOL

How do you factor v² - 16?

Answers

Answer 1
Answer:

Answer:

(v-4)(v+4)

Step-by-step explanation:

Since this is a binomial, and it is subtracting, you can square root method it! :)
Answer 2
Answer:

Answer:

what is v

then what ever that number is  x it by the exact number

Step-by-step explanation:

then - 16

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Given O below, the arcs AB and CD must be congruent. True or false?

Answers

Answer:

false

Step-by-step explanation: they do not have the same degree

Answer:

false because the angles (AOB and COD) are not equal

A submarine can descend at a rate of -2.5 meters/second. Suppose that the submarine begins at a depth of -25 meters. How long would it take the submarine to reach its maximum depth of -200 meters?_________________

Answers

The distance from the initial depth to the maximum depth is:
abs (-200- (-25))= 175 m (distance is always >=0, so we have to take the abs).

175 m* (1 sec/ 2.5m)= 70 sec.

It would take the submarine 70 seconds to reach its maximum depth.

Hope this helps~

Jeremiah has a batting average of 0.312 this baseball season. Express his average as a fraction in lowest terms.Rewrite 9.524 as a mixed number in lowest terms

Answers

The answer is 131. I think?

A cooking club has 10 members. how many ways can they select a president and vice president from among the members?A. 180
B. 20
C. 100
D. 90

Answers

There are 10 possible ways to select a president from the club, because their are 10 available members to choose from.

After a president is chosen, their are 9 possible ways to select a vice president, because one of the members will already have the position of president, so they can't be vice president (10-1=9)

Now we just multiply to possibilities of presidents by the possibilities of vice-presidents.

president*vicepresident=
10*9=90

Answer= D. 90

two cars travel in opposite directions, starting from the same place at the same time. One travels at an average rate of 48 miles per hour and the other averaged at 55 miles per hour. in how many hours will the be 618 miles apart?

Answers

so in 1 hour they will be 48+55=103 miles apart
how many hours will it be in 618
103 times x hours=618
divide both sides by 103
x=618/103
x=6

the answer is 6 hours

What number is 70% of 45

Answers

x-\ number\n\n(x)/(45)*100\%=70\%\n\n(x)/(45)=0.7\ \ \ | multiply\ 45\n\nx=31.5\n\n31.5\ is\ 70\%\ of\ 45.
70% of 45 
= 0.7 x 45 
= 31.5
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