What is one quarter added to three eights answer

Answers

Answer 1
Answer: 1/4 + 3/8 = 5/8

You always have to change the denominators (which are the bottom parts of the fraction) to be the same. To make it simple you do 8 as the denominators, 2 × 4= 8.
Now all you have to do is add 2/8 + 3/8= 5/8
Easy as pie! Hope I helped you :)
Answer 2
Answer: You have to make the denominators the same so 1/4 and 3/8, times 1 and 4 by 2 so intead of 1/4 you have 2/8 and 2/8 + 3/8 which makes 5/8, which is a prime number so cannot be simplified

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Susan drove an average speed of 30 miles per hour for the first 30 miles of a trip & then at a average speed of 60 miles/hr for the remaining 30 miles of the trip if she made no stops during the trip what was susan's avg speed in miles/hr for the entire trip.(A) 35(B) 40(C) 45(D) 50(E) 55

Answers

Answer:

The correct option is B.

Step-by-step explanation:

It is given that Susan drove an average speed of 30 miles per hour for the first 30 miles of a trip & then at a average speed of 60 miles/hr for the remaining 30 miles of the trip.

Time=(Distance)/(Speed)

Time taken by Susan in first 30 miles is

T_1=(30)/(30)=1

Time taken by Susan in remaining 30 miles is

T_2=(30)/(60)=0.5

Total distance covered by Susan is

D=30+30=60

Total time taken by susan to complete 60 miles trip is

T=T_1+T_2

T=1+0.5=1.5

Susan's avg speed in miles/hr for the entire trip is

S=(60)/(1.5)=40

The average speed of susan for entire trip is 40. Therefore the correct option is B.

PLEASE HELP!! You are playing a game in which you must flip a coin and then roll a die. What is the probability of flipping a tails and then rolling a five?

Answers

The chances of that are 1/12 which is 0.083%

Answer:  1/12

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Explanation:

1/2 is the probability of flipping tails because we have one side labeled tails out of 2 sides total.

1/6 is the probability of rolling a 5, because there's one side we want out of 6 total.

The two events (flipping the coin and rolling the die) are independent, allowing us to multiply those previously mentioned fractions:

(1/2)*(1/6) = (1*1)/(2*6) = 1/12

A company makes concrete paving stones in different sizes. Each stone has a volume of 360 cubic inches and a height of 4 inches. How many different paving stones could be made if any whole number length and width?

Answers

v=lwh
given
v=360
h=4
360=lw4
divide both sides by 4
90=lw
k, factor 90
90=1*2*3*3*5
so the possible combos are
1*90
2*45
3*30
5*18
6*15
9*10
then they just reverse
that was 6 ways
if we say that a 9 by 10 paving stone is the same as a 10 by 9 paving stone then there are 6 different paving stones can be made

if we say that a 9 by 10 paving stone is different from a 10 by 9 paving stone then there are 6*2 or 12 different paving stones can be made

A toddler crawled 2 yards, stopped, then continued to crawl 8 more feet. How many feet did he travel in total?

Answers

he traveled 14 feet. 1 yard is equal to 3 feet. 2 yards are 6 feet. 8+6=14ft

Answer:

14 feet

Step-by-step explanation:

Let F = number of feet the child traveled in total

Convert the yards to feet by applying the rule of three,

1 yard ---------------- 3 feet

2 yards -------------- X

X=(2 yards*3 feet)/(1 yard)=6feet

Hence,

2 yards = 6 feet

Now add the additional 8 feet you crawled

F = 6 feet + 8 feet

F = 14 feet

Therefore, the child traveled 14 feet in total.

Hope this helps!

A certain forest covers an area of 2,000 square kilometers. Suppose that each year this area decreases by 6%. What is the function that bestrepresents the area of the forest each year and how much area remains after 12 years? Round your answer to the nearest square kilometer.Hint: Use the formula, f(x) = P(1 + r)x.

Answers


The question gives you the formula to use, but it's printed wrong.
The 'x' is an exponent after the (1 + r).

All you have to do is take the formula, and write the numbers into it
that are also given.

The key thing to spot is that the forest is decreasing, so the 'r' is negative,
just as if you had money in a savings account and every year the bank took
6% out of it.

So the formula to use is       f(x)  =  P (1 + r) ^x

P = 2000
r = -0.06
                        f(x)  =  2000 (1 - 0.06)^x
                               =  2000 (0.94)^x

The amount left after 12 years is
        
                                   2000 (0.94)¹² =

                                   2000 (0.476)  =  951.8 square kilometers.
                  

hope this helps- i did the test :)

Answer:

Find m<1.
78%.
53%.
38%.
42%

Answers

Step-by-step explanation:

The sum of all the angles in a triangle is 180 degrees.
You know two angles, one 90 degrees, and the other 38 degrees. Add 90 and 38 together to get 128

Now 180-128 gets 52 degrees

Angle m is 52 degrees