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KATRIN_1 [288]
3 years ago
5

...................................................................................................................help

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

Answer:

4 \frac{7}{72}

Step-by-step explanation:

18 \frac{7}{8}  -   14 \frac{7}{9}  =\\\\18 \frac{63}{72}  - 14 \frac{56}{72}  \\\\18 \frac{63}{72}  = \frac{1359}{72} \\\\14 \frac{56}{72}  =   \frac{1064}{72}\\ \\\frac{1359}{72} - \frac{1064}{72} = \frac{295}{72}\\\\4 \frac{7}{72}

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Austin will rent a car for the weekend. He can choose one of two plans. The first plan has an initial fee of $38 and costs an ad
Nana76 [90]
38+0.11m=51+0.09m
0.02m=13
m=650 miles
If Austin will drive more than 650 miles he can choose the second plan of car renting.
If he plan todrive less than 650 miles then it's more preferable to choose the first plan of car renting
3 0
3 years ago
I need help with 4 and 5
Norma-Jean [14]
4.) The dotted line on the trapezoid is one of the lines. As you can see, to the left of the line is a right triangle. The other line should be drawn on the right side of the trapezoid to section off the other triangle. Now there is a rectangle in the middle with dimensions of 8 cm by 6 cm, and two identical triangles on either side. To find their base length, we can subtract 8 from 12 to get 4. These difference represents the sum of the two triangles' bases. Since the triangles are identical, we can divide 4 in half to get a base of 2 cm for each triangle. Therefore the triangles both have dimensions of 2 cm by 6 cm.

To find the area, we can add together the areas of the triangles and rectangle. We use length times width to find the area of a rectangle, and we use one-half base times height to find the area ofo a triangle.

Rectangle: 8*6 = 48 cm^2

Triangle: 0.5*2*6 = 6 cm^2

So the area of the trapezoid is 48 + 6 + 6 = 60 cm^2
8 0
3 years ago
Find the area of this triangle
ololo11 [35]

Answer:

15

Step-by-step explanation:

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\frac{bh}{2}=\frac{5*6}{2}=\frac{30}{2}=15

5 0
3 years ago
1/4 = ?/8 Please help :(
Vilka [71]

Answer:

1/4 = 2/8

Step-by-step explanation:

<h2>—Math</h2>

1/4 = p/8

p = 8/4

p = 2

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5 0
3 years ago
) At a certain instant of time, a cube has side length 2 inches and its volume is increasing at a rate of 0.5 inches cubed per h
Phantasy [73]

Answer:

1 inches per cube

As required.

Step-by-step explanation:

Solution:

Given:

Volume = l3

dV / dt = 3 l2dl / dt

dv / dt = 0.5 inches cubed / hour

Surface area = 6 l2

Differentiate with respect to t: s = 6 l2

We get:

ds / dt = 12 l dl / dt

and dv / dt = = 0.5 inches cubed / hour

we know that:

dv / dt = 20 = 3 l2dl / dt

0.5 = 3 l2 (dl / dv)(dv / dt)

0.5 = 3l2 dl / dt

0.5 / 3l2 = dl / dt

Put 0.5 / 3l2 = dl / dt  in eq ds / dt = 12 l dl / dt

ds / dt = 12 l (0.5 / 3l2)

        =  4(0.5) / l

       = 2 / 2 inches pr cube    [ l = 2 inches per cube]

    = 1 inches per cube

As required.

3 0
3 years ago
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