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ruslelena [56]
3 years ago
11

I WILL GIVE SO MANY POINTS PLS HELP

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
8 0

i might be wrong but you have to do proportions, i got 45 minute

Step-by-step explanation:

set it,it up by 30 minutes over 4 miles and x over 6 miles then you multiply by 6 and 30 which is 180 then divide by 4 and i got 45

Sphinxa [80]3 years ago
4 0

Answer:

  • 10 fewer minutes

Step-by-step explanation:

<u>Use formula</u>

  • distance = time* speed

<u>The distance between home and school:</u>

  • 4* 30 min = 4 * 0.5 hr = 2 miles

<u>Noah's time to reach home:</u>

  • 2 / 6 = 1/3 hr = 1/3*60 min = 20 min

<u>Difference in time:</u>

  • 30 min - 20 min = 10 min
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genetic experiment with peas resulted in one sample of offspring that consisted of green peas and yellow peas. a. Construct a ​%
Andreas93 [3]

Complete Question

A genetic experiment with peas resulted in one sample of offspring that consisted of 432 green peas and 164 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. It was expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?

Answer:

The  95%  confidence interval is  0.2392  <  p < 0.3108

No, the confidence interval includes​ 0.25, so the true percentage could easily equal​ 25%

Step-by-step explanation:

From the question we are told that

  The total sample size is  n  =  432 + 164 =596

   The  number of  offspring that is yellow peas is y =  432

   The  number of  offspring that is green peas   is g =  164

   

The sample proportion for offspring that are yellow peas is mathematically evaluated as

        \r p  =  \frac{ 164 }{596}

        \r p  =  0.275

Given the the  confidence level is  95% then the level of significance is mathematically represented as

       \alpha  =  (100 - 95)\%

      \alpha =  5\%  =  0.0 5

The  critical value of  \frac{\alpha }{2} from the normal distribution table is  

      Z_{\frac{\alpha }{2} } = 1.96

Generally the margin of error is mathematically evaluated as

        E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\r p (1- \r p )}{n} }

=>      E = 1.96 * \sqrt{\frac{0.275 (1- 0.275 )}{596} }

=>      E =  0.0358

The  95%  confidence interval is mathematically represented as

      \r p - E  <  p < \r p + E

=>   0.275 -  0.0358  <  p < 0.275 +  0.0358

=>   0.2392  <  p < 0.3108

6 0
2 years ago
Fill in the missing value to make the following ratio Equivalent <br><br><br> ___:5=16:20
Veronika [31]

Answer:

4

Step-by-step explanation:

20÷4=5 so 16÷4=4 :))

Hope that helps.

3 0
3 years ago
1=n+1/3 (please show work)
belka [17]
Taking back some points there lol , but actually the answer is n=2/3
7 0
2 years ago
HELPPPPPPPP pleaass3wwwww
Vinvika [58]

Answer: -48

Step-by-step explanation:

-4(12)

4x12= -48

4 0
2 years ago
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The isosceles triangle has two sides of equal length , a , that are longer than the length of the base , b. The perimeter of the
bija089 [108]

Answer:

Step-by-step explanation:

Since the length of one of the longer sides, a, has been given to be 6.3, plug it into the equation.

2(6.3) + b = 15.7

12.6 + b = 15.7

b = 15.7 - 12.6

b = 3.1

8 0
3 years ago
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