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QveST [7]
2 years ago
14

Working together, Karen and Darren can mow their yard in 40 minutes if they each have a mower and mow at the same time. If Karen

could mow the entire yard by herself in 60 minutes, how long would Darren take to mow the yard working by himself?
Mathematics
1 answer:
Nataly [62]2 years ago
8 0

Answer:

Step-by-step explanation:

Answer:

120mins

Step-by-step explanation:

Karen mows at 60mins, 1 peice of land

Let Darren mows that 1 peice of land at Xmins

The rate at which Karen mows the land would be 1/60 [takes 60mins for 1 piece]

The rate at which Darren mows the land would be 1/x

The average rate working together on one peice of land will be

the combined time

(1/60) +(1/X) = 1/40

[(1/60) + (1/X)]x40 =1 yard

1/X = 1/40 -1/60=(3-2) /120 =1/120

1/X = 1/120

X=120mins

Darren's takes 120mins

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Write multiplication expression to represent the change in temperature after the plane ascends 10,000 feet .... Above it says th
Allisa [31]

Answer:

1.3°F * 10 = 13°F

10.2°F

Step-by-step explanation:

Given that:

Temperature on the ground = - 2.8°F

Change in temperature per 1000 ft rise = 1.3°F

Change in temperature after the plane ascends 10000 ft

Change in temperature per 1000ft rise * (10000/1000)

1.3°F * 10 = 13°F

B.) Temperature at 10,000 feets

Temperature on ground + change in temperature at 10,000ft

-2.8°F + 13°F

= 10.2°F

5 0
3 years ago
Syrus is buying a tent with the dimensions shown below. The volume inside the tent is 36 feet. Syrus isn't sure if the tent will
ivolga24 [154]

Answer:

the answer is 3 feet

Step-by-step explanation:

We can use the volume formula, V =1/2 bhl to find the height of the tent

the volume is 36^{3}. The base is 4 and the length is 6 feet

​36=1/2 ⋅4⋅h⋅6

36=12h

3=h

The height of <em>the tent is 3 feet.</em>

7 0
3 years ago
Read 2 more answers
Which of the following could be the equation of a line parallel to the line y=-4x+1
saveliy_v [14]
It would be D.
Because the slope is the same but the yint is different
5 0
3 years ago
Read 2 more answers
What is 73 divided by 42,895
zimovet [89]

Answer:

587.602739726

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
X<br> For f(x)=0.01(2) , find the average rate of change from x=3 to x=8.
NikAS [45]
  • Answer:

Option b. 0.496

  • Step-by-step explanation:

we know that

f(x)=0.01(2^{x})

The average rate of change is equal to

\frac{f(b)-f(a)}{b-a}

where

a=3

b=8

f(a)=f(3)=0.01(2^{3})=0.08

f(b)=f(8)=0.01(2^{8})=2.56

Substitute

\frac{2.56-0.08}{8-3}

\frac{2.48}{5}

0.496

3 0
2 years ago
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