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sergiy2304 [10]
4 years ago
12

Maria normally spends half an hour driving

Mathematics
1 answer:
Schach [20]4 years ago
5 0

Answer:

30mins =10mph

1hour =10miles

So 30mins = 5miles

Step-by-step explanation:

You might be interested in
Helpppppppppppppppppppppp
Setler79 [48]

Answer:

EF=3.6

Step-by-step explanation:

I'm going to use Pythagorean Theorem for side EF.

4.8^2+EF^2=6^2

23.04+EF^2=36

-23.04 -23.04

EF^2=12.96

sqrt sqrt

EF=3.6

4 0
3 years ago
Dr. Fitzgerald has graded 15 of 26 exams for Epi 501. (a) What proportion of all exams has Dr. Fitzgerald graded? (b) What was t
postnew [5]

Answer: a) 15:26, and b) 15:11.

Step-by-step explanation:

Since we have given that

Number of graded tests = 15

Number of total tests = 26

Number of ungraded tests is given by

26-15\\\\=11

a) Proportion of all exams has Dr. Fitxgerald graded is given by

15:26.

b) Ratio of graded to ungraded tests is given by 15:11

Hence, a) 15:26, and b) 15:11.

5 0
4 years ago
Determine whether the following statement is true or false. Explain. When obtaining a stratified​ sample, the number of indivi
inysia [295]

Answer: D. False." Within stratified samples, the number of individuals sampled from each stratum should be proportional to the size of the strata in the population."

Step-by-step explanation:

  • A stratified sample is obtained by dividing the population into groups without overlapping called strata and then obtaining a simple random sample from each stratum.

The individuals within each stratum should be homogeneous or similar in some way.

Therefore, the given statement "When obtaining a stratified sample, the number of individuals included within each stratum must be equal." is  false because within stratified samples, the number of individuals sampled from each stratum should be proportional to the size of the strata in the population.

3 0
3 years ago
If the figure is reflected over the line y=x, which rule is true
saveliy_v [14]

Answer:

These reflected points represent the inverse function

Step-by-step explanation:

This is just one of the rules that are true.

8 0
3 years ago
Determine the modulus of each of the complex numbers in the matching pairs. List these moduli in order from smallest to largest.
slava [35]

Answer:

the modulus of a complex number z = a + bi is:

Izl= √(a²+b²)

The fact that n is complex does not mean that n doesn't has a real part, so we must write our numbers as:

m = 2 + 6i

n = a + bi

Im + nl = 3√10

√(a² + b²+ 2²+ 6²)= 3√10

√(a^2 + b^2 + 40) = 3√10

squaring both side

a²+b²+40 = 3^2*10 = 9*10 =90

a²+b²= 90 - 40

a²+b²=50

So,

|n|=√(a^2 + b^2) = √50

The modulus of n must be equal to the square root of 50.

now

values a and b such

a^2 + b^2 = 50.

for example, a = 5 and b = 5

5²+5²=25+25= 50

Then a possible value for n is:

n = 5+5i

7 0
4 years ago
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