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Wewaii [24]
2 years ago
12

Before it started to rain, Bobby cut 1 8 of the grass in his yard and Danny cut 1 5 of the grass in the yard. Both boys were dis

appointed because they were not able to cut the entire yard.
Which statement is TRUE?

A)Together the boys didn't even cut half the yard. B) The boys were able to cut more than half the yard. C) The boys cut almost three-fourths of the yard. D) Together the boys cut almost the entire yard.
Mathematics
jasmie
2 years ago
do you knw your math why are you talking little lady
2 answers:
Serggg [28]2 years ago
5 0

It’s B. The boys were able to cut more than half the yard.

blsea [12.9K]2 years ago
4 0

Answer:

A) Together the boys didn't even cut half the yard.

Step-by-step explanation:

The amount cut was ...

1/8 + 1/5 = 5/40 +8/40 = 13/40

This amount is less than half = 20/40, so choice A is appropriate.

_____

You can reason about these fractions several ways:

1. half is 2 1/2 fifths. 1/8 is less than 1/5, so 1/5+1/8 < (2 1/2)/5.

2. half is 4/8. 1/5 is more than 1/8 but is less than 2/8. 1/8 + 1/5 < 3/8 < 1/2

3. 1/5 < 1/4; 1/8 < 1/4; 1/2 = 2/4, so two amounts less than 1/4 cannot be more than 1/2.

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A raft and a motorboat simultaneously leave from the same point and move down the river. After 2 hours the motorboat turns aroun
lesya692 [45]

Answer:

2 hours

Step-by-step explanation:

Let x mph be the speed of motorboat in still water and y mph be the speed of current.

A raft and a motorboat simultaneously leave from the same point and move down the river, then speeds down the river are:

        motorboat =  x + y mph

        raft = y mph

In two hours they will cover:

        motorboat = 2(x+y) miles

        raft = 2y miles

After 2 hours the motorboat turns around and starts moving towards the raft (against the current), so its speed is now x - y mph.

Let t be the time they move towards each other. In t hours, they cover

        motorboat = t(x - y) miles

        raft = ty miles

The distance from the starting point to the turning point is the same as the sum of the distances the raft covers and the motorboat covers after turning around, so

2(x+y)=2y+t(x-y)+ty \\ \\2x+2y=2y+tx-ty+ty\\ \\2x=tx\\ \\t=2\ hours

6 0
3 years ago
5. Count the total number of edges in the<br>2 solid figures. How many edges in all?<br>​
Bess [88]

The answer is 13.

A cuboid has 12 edges. and a cone has one (the base).

The curved part is not counted as an edge.

Hope this helps!

8 0
3 years ago
How determine the scalr factor of A(3,6) A (4.5,9)
VARVARA [1.3K]
Because 3 / 6 = 0.5 and 4.5 / 9 = 0.5, the scale factor is 0.5 ;
8 0
3 years ago
Neil and Jean each choose a number at random from the set 1,2,3,4,5,6,7,9,10 their numbers are allowed to be the same. What is t
Rainbow [258]
There is a 60% chance that the product of the two numbers will be 7 because the numbers 1-6 are each 10% of the 100%.
6 0
3 years ago
Read 2 more answers
20 POINTS!
alukav5142 [94]
I think it was √(a^2+b^2. I think.
8 0
3 years ago
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