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Katyanochek1 [597]
2 years ago
8

9. Max walks 2 km to school in 40 minutes and Dave cycles 5 km to school in 15

Mathematics
2 answers:
Georgia [21]2 years ago
7 0
A) 2 : 5
b) 40 : 15 = 8 : 3
Alona [7]2 years ago
5 0
Max’s distance : Dave’s distance = 2 km : 5 km = 2:5
Max’s time : Dave’s time = 40 min : 15 min = 40:15 = 8:3
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stich3 [128]
1. The shape of cross-section is a circle.
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A = L*H = 12*6 = 72 cm^2

3. The cross-section parallel to ABC is DEF with h = 12 ft, b= 5ft (where h is the height and b is the base of a right angled triangle).

Area, A = 1/2 *b*h = 1/2*5*12 =30 ft^2

4. Plane BDHF is a rectangle shape whose length is the diagonal of ABCD.

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8 0
3 years ago
Read 2 more answers
Select the correct answer.
Luba_88 [7]
I think it Is B.....
7 0
2 years ago
To convert a quadratic from y = ax2 + bx + c form to vertex form, y = a(x - h)2+ k, you use the process of completing the square
ladessa [460]
Since we will be completing the square we need to isolate the x

y-5 = 2x^2 -4x

now we the coefficient of the x^2 to equal 1 so we take 2 as common factor

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now we'll make it perfect square by adding 2 to both sides

y-5+2=2(x^2-2x+1)

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now isolate the y

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5 0
3 years ago
A contractor combined x tons of a gravel mixture that contained 10 percent gravel G, by weight, with y tons of a mixture that co
White raven [17]

Answer:

The value of x would be \frac{3}{5}y or \frac{3}{8}z

Step-by-step explanation:

Given,

x tons of 10% gravel G mixture is mixed with y ton of 2% gravel G to obtain  5% gravel mixture,

Thus, gravel G in x ton + gravel in y ton = gravel G in the resultant mixture,          

⇒ 0.1x + 0.02y = 0.05(x+y),

0.1x - 0.05x = 0.05y - 0.02y

0.05x = 0.03y

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Now, resultant mixture is z ton,

i.e. z=x+y

\implies y = z - x

From equation (1),

x=\frac{3}{5}(z-x) = \frac{3}{5}z-\frac{3}{5}x

x+\frac{3}{5}x=\frac{3}{5}z

\frac{8}{5}x=\frac{3}{5}z

x=\frac{3}{8}z

3 0
3 years ago
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ryzh [129]

Answer:

ok so i think your gonna haveto use addition tell me if im wrong

Step-by-step explanation:you have a blessed thanksgiveing

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