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3 years ago

Consider the diagram below.

Mathematics

2 answers:

charle [14.2K]3 years ago

4 0

Answer:

Is D I think

Step-by-step explanation:

harina [27]3 years ago

3 0

Answer: if two planes intersect, they intersect in exactly one line

Step-by-step explanation:

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Aiden is trying to pick up some lawn mowing jobs over the weekend to make extra money for a school trip. Each lawn in his neighb

Eva8 [605]

Answer:

Step-by-step explanation:

40x is the number of lawns he can do, less the time to do his grandparents time (added to other law time) and he has 660 mins of less to complete them.

7 0

3 years ago

Dina and Masha started out on a 10 km bike path at the same time. When Dina reached the end of the 10 km, Masha still had 2 km t

german

Answer:

4 km/h

Step-by-step explanation:

We are told that Dina and Masha started out on a 10 km bike path at the same time.

Dina's biking speed is 5 km/h.

Let us find taken by Dina to cover 10 kn distance.

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

$\text{Time taken by Dina to cover 10 km}=\frac{10km}{5\frac{km}{hr}}$

$\text{Time taken by Dina to cover 10 km}=\frac{10km}{5}\times \frac{hr}{km}}$

$\text{Time taken by Dina to cover 10 km}=2hr$

Therefore, Dina took 2 hours to complete 10 km.

Since both started at the same time, therefore, Masha also took 2 hours to complete 2 km less than Dina.

Let us find distance covered by Masha.

$\text{Distance covered by Masha}=10\text{ km}-2\text{ km}=8\text{ km}$

Now let us find Masha's biking speed.

$\text{Speed}=\frac{\text{Distance}}{\text{Time}}$

$\text{Masha's biking speed}=\frac{8\text{ km}}{2\text{ hour}}$

$\text{Masha's biking speed}=4\frac{\text{ km}}{\text{ hour}}$

Therefore, Masha's biking speed is 4 km per hour.

4 0

4 years ago

If you can run a mile in 7 minutes, how fast are you running?

Semmy [17]

You are running 8.5 mph

8 0

3 years ago

Please help a girl out:

a_sh-v [17]

It equals 355cm, I gotchu my baby

4 0

3 years ago

Wang Xiu Ying is gift wrapping boxes in the shape of a cube for her class fundraiser. She calculates that the surface area, S SS

harina [27]

Answer:

$C(m)=0.9m^2+0.25$

Step-by-step explanation:

The surface area of a cube-shaped box with a side of m feet is given by the function:

$S(m)=6m^2$

The cost, C, in dollars, of wrapping a box with a surface area of x square feet is given by the function:

$C ( x ) = 0.15 x + 0.25$

We want to find an explicit expression that models the costs of wrapping a cube-shaped box with a side length of m feet.

In the cost function, C(x), x is the surface area, therefore:

$S(m)=x;$ and$\\C ( S(m) ) = 0.15(6m^2) + 0.25\\C(m)=0.9m^2+0.25$

To find the cost of wrapping a cube of side length m feet, we use the explicit function:

$C(m)=0.9m^2+0.25$

5 0

4 years ago