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EleoNora [17]
3 years ago
7

The scale of a map says that 4 cm represents 5 km.

Mathematics
1 answer:
Vlada [557]3 years ago
8 0

A.

A.eddcccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeee  

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What is 1 3/4 divided by 2/5​
sveta [45]

Answer:

35/8

Step-by-step explanation:

1 3/4 = 1 + 3/4 = 4/4 + 3/4 = 7/4.

So 1 3/4 ÷ 2/5 = 7/4 × 5/2 = 35/8.

6 0
3 years ago
Congress regulates corporate fuel economy and sets an annual gas mileage for cars. A company with a large fleet of cars hopes to
3241004551 [841]

Answer:

There is sufficient evidence that fuel economy goal has been attained.

Step-by-step explanation:

The hypothesis :

H0 : μ < 30.2

H1 : μ ≥ 30.2

The test statistic :

(xbar - μ) ÷ (s/√(n))

xbar = 32.12 ; s = 4.83 ; n = 50

Test statistic :

(32.12 - 30.2) ÷ (4.83/√(50))

1.92 ÷ 0.6830651

T = 2.811

Using the Pvalue from test statistic calculator :

Since we used the sample standard deviation, we use the T distribution

df = n - 1 = 50 - 1 = 49

Pvalue(2.811, 49) ; one tailed = 0.00354

At α = 0.05

Pvalue < α ; then we reject the null and conclude that there is sufficient evidence that fuel economy goal has been attained

4 0
3 years ago
The formula for the area of a circle is a= 2Ïr^2. how does the value for a change when r increases
ivann1987 [24]
The radius is half the diameter of the circle.  If the radius gets larger then the whole circle grows.  When the circle gets larger, the area gets larger too.
6 0
3 years ago
Find the length of the arc and area of the shaded region. Round the answer to two decimal places. (Use Pi = 3.14) SHOW WORK!
Ipatiy [6.2K]

Answer:

i just want some friends

Step-by-step explanation:

8 0
3 years ago
HELP ME!!!!!!!!!!!!!!!!!!!!!!
adelina 88 [10]

Answer:

B. 30

Step-by-step explanation:

Boys to girls

2 : 3

Units of girls = 3

3 units = 18

1 unit = 18 ÷ 3 = 6

Total number of units = 2 + 3 = 5

5 units = 6 x 5 = 30

4 0
3 years ago
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