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sveticcg [70]
2 years ago
11

Sadie started reading at 3:31 and finishes at 6:10. How long did Sadie read?

Mathematics
1 answer:
Valentin [98]2 years ago
6 0

Answer:

2h and 39mins

Step-by-step explanation:

If you are unsure of these times questions. I suggest you draw a timeline! it helps! Trust me!!

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What is the answer to 19+x/2=4?
salantis [7]
19+x/2=4
multiply 2 on both sides
19+x=4 times 2
19+x=8
subtract 19 on each side
x=8-19
subtract
x=-11
8 0
3 years ago
Show work please help
Snezhnost [94]

Answer:

20 yd^2

Step-by-step explanation:

Your work is partially correct.

Assuming that the sides marked 8 yds and 2 yds are parallel, then the area of the trapezoid is

A =    ( 8 yds + 2 yds)

        ------------------------ * 4  =  20 yd^2

                      2

4 0
3 years ago
Write a exponential function of 1600 by5.6%
NeX [460]

Step-by-step explanation:

If there is a growth of 5.6% per time unit. The function is

f(t) = 1600 * (1.056)^t

3 0
3 years ago
Your averages and values are the following:
ioda

Answer: You need a grade of 78 on the final exam to earn a final grade average of at least 87 in each grading system.

Step-by-step explanation:

(85 + 90 + 95 + x)÷ 4 =87

Simplify:

(270 + x) ÷ 4 = 87

Rearrange:

(x + 270) ÷ 4 = 87

Multiply terms to Reduce:

4((x + 270) ÷ 4) = 4 * 87

Cancel Multiplied terms in Denominator:

x + 270 = 4 * 87

Multiply:

x + 270 = 348

Subtract 270 on both sides of the equation:

x + 270 - 270 = 348 - 270

Simplify:

x = 78

6 0
2 years ago
A hypothesis test is to be performed for a population proportion. For the given sample data and null hypothesis, compute the val
liberstina [14]

Answer:

The correct option is a

Step-by-step explanation:

From the question we are told that

    The sample size is n =  415

    The sample proportion is  \r p  = 0.49

Now

     The null hypothesis is  H_o  :  p = 0.3

     The alternative hypothesis is H_a  :  p \ne 0.3

The test statistics is mathematically evaluated as

      t  =  \frac{\r p -  p  }{ \frac{\sqrt{ p (1- p )} }{n} }

substituting values

      t  =  \frac{0.49 -  0.3  }{ \sqrt{ \frac{0.3 (1- 0.3 ) }{415} }}

     t  = 8.446

     

8 0
3 years ago
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