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slava [35]
3 years ago
13

Number 2 and 3 please help me please I really need help I need help

Mathematics
1 answer:
Murljashka [212]3 years ago
8 0

Answer:2) 20cm

             3) 90m

Step-by-step explanation: 2) 10x2=20cm

                                             3) 35x2=70, 20x2=20, 70+20= 90m

                                                 

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A football field measures 300 feet in length. It can also be expressed as approximately 5. 7 times 10 Superscript n miles. If th
CaHeK987 [17]

The most reasonable value of n  n = -2.

We have given that the length of the football field = 300 feet

It can also be expressed as approximately  5.7\times 10^{n}miles

<h3>What is the value of one mile in feet?</h3>

Also, 1 mile = 5280 feet....(1)

We have to find 1 feet so divide both side of equation (1)by by 5280 we get,

1feet=\frac{1}{5280}

Now, for 300 feet is,

300feet=\frac{1}{5280}(300)

300 feet=0.056818181=0.057miles

In scientific notation we have,

300 feet=5.7\times 10^{-2}miles

Therefore we get  n = -2.

To learn more about the value of power of 10 visit:

brainly.com/question/2193418

5 0
2 years ago
Witch ratio is greater that 5/8
Vesna [10]

Answer:

well u have to give the picture

Step-by-step explanation:

8 0
3 years ago
Rachel is a stunt driver, and shes escaping from a building that is about to explode!
Eva8 [605]

Answer:

I think this would be 182

Step-by-step explanation:

8 0
3 years ago
Calculate the slope.please help due in 2 hours
sergejj [24]

Answer:

Slope = 4

Step-by-step explanation:

Use any two pairs from the table of values, say (0, 3) and (2, 11).

Slope = ∆y/∆x

Slope = \frac{11 - 3}{2 - 0}

Slope = \frac{8}{2}

Slope = 4

3 0
3 years ago
A survey of an urban university (population of 25,450) showed that 870 of 1,100 students sampled supported a fee increase to fun
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Answer:

95% confidence interval for the proportion of students supporting the fee increase is [0.767, 0.815]. Option C

Step-by-step explanation:

The confidence interval for a proportion is given as [p +/- margin of error (E)]

p is sample proportion = 870/1,100 = 0.791

n is sample size = 1,100

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value (z) at 5% significance level is 1.96.

E = z × sqrt[p(1-p) ÷ n] = 1.96 × sqrt[0.791(1-0.791) ÷ 1,100] = 1.96 × 0.0123 = 0.024

Lower limit of proportion = p - E = 0.791 - 0.024 = 0.767

Upper limit of proportion = p + E = 0.791 + 0.024 = 0.815

95% confidence interval for the proportion of students supporting the fee increase is between a lower limit of 0.767 and an upper limit of 0.815.

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3 years ago
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