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kkurt [141]
3 years ago
12

HELP PLEASE I don't know if correct or not

Mathematics
1 answer:
Ratling [72]3 years ago
5 0

All of them are true.

Refer to calculation for understanding.

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It’s just 1
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The radious diametet of tge following circle is 11 cm

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3 years ago
On a map, 90 miles is represented by 3 inches.
zepelin [54]
Hello!

3 inches equals 90 miles

We have to find what multiplied by 3 is 1/2

we can do 3 / 1/2 to find this

3 / 0.5 = 6

So they divide it by 6

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4 years ago
The time required to complete a project is normally distributed with a mean of 80 weeks and a standard deviation of 10 weeks. Th
matrenka [14]

Answer: the due date would be 92 weeks

Step-by-step explanation:

Since the time required to complete a project is normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

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σ = standard deviation

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σ = 10 weeks

If a construction company bidding on this contract wishes to be 90 percent sure of finishing by the due date, the z score corresponding to 90%(90/100 = 0.9) is 1.29

Therefore,

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x - 80 = 1.2 × 10

x - 80 = 12

x = 80 + 12 = 92

5 0
3 years ago
A car travels along a straight road for 30 seconds starting at time t = 0. Its acceleration in ft/sec2 is given by the linear gr
I am Lyosha [343]
From an acceleration-time graph, you can work out the area under the graph to find the velocity. There are two triangles on the graph as shown below. The total area of the triangles are

\frac{(10)(10)}{2}+ \frac{(20)(20)}{2}=250 ft/sec^{2}

Hence, the distance is 250×30=7500 ft

8 0
3 years ago
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