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Tresset [83]
3 years ago
5

A car is traveling at a speed of 65 mph. The car slows down 18 mph because of traffic, and then increases its speed by 13 mph. W

hat is the car's speed now?
A) 55 mph
B) 60 mph
C) 70 mph
D) 75 mph
Mathematics
2 answers:
Oksanka [162]3 years ago
8 0

Answer: 60 MPH. So the answer is B

Step-by-step explanation:

65 - 18 = 47

47 + 13 = 60

They are now going 60 MPH

Svetlanka [38]3 years ago
5 0
65-18+13=60
so 60 is your answer hope i helped
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A survey of 32 different gas stations in Texas found the average price of gasoline to be $3.19 a gallon with a sample standard d
Leni [432]

Answer:

The value of test statistic is -4.1247

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $3.26 a gallon

Sample mean, \bar{x} = $3.19 a gallon

Sample size, n = 32

Sample standard deviation, σ = $0.096

First, we design the null and the alternate hypothesis

H_{0}: \mu = 3.26\text{ dollars a gallon}\\H_A: \mu < 3.26\text{ dollars a gallon}

We use one-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{3.19 - 3.26}{\frac{0.096}{\sqrt{32}} } = -4.1247

Thus, the value of test statistic is -4.1247

3 0
2 years ago
Explain how you can use base 10 blocks to find 2.16÷3
Vikentia [17]
You can use 10 blocks by having 1 ten and 6 ones and then divide it into groups of 3 when you do that you are kind of subtracting when you take away 3 away each time. After that you multiply it, so you think of whatever times 3 is 16 which is 15 r1. Then your answer should be 30.
8 0
3 years ago
Pls help me with this
Illusion [34]

Answer:

No solutions.

Step-by-step explanation:

Both equations have the same slope, but are separated by virtue of their different values of b, the y-intercept.  The same slope means they are parallel lines.  Since the y-intercept is different, they do not overlap.

As they say, "Parallel line have a lot in common.  Too bad they'll never meet."

See attachment.

7 0
2 years ago
*A triangle has sides 42, 4x, and 2x−6. What is the possible range of x?
scoray [572]

Answer:

<h2>The Possible range for x is : ]8 , 18[</h2>

Step-by-step explanation:

To can draw this triangle if:

4x - (2x - 6) < 42 < 4x + (2x - 6)

solve inequality 1 :

4x - (2x - 6) < 42 ⇔ 2x + 6 < 42 ⇔ 2x < 36 ⇔ x < 18 (1)

Solve inequality 2 :

42 < 4x + (2x - 6) ⇔ 42 < 6x - 6 ⇔ 48 < 6x ⇔ 8 < x (2)

from (1) and (2) we deduce that : 8 < x < 18

3 0
3 years ago
The domain of the following relation: R: {(−3, 4), (5, 0), (1, 5), (2, 8), (5, 10)} is:
Shalnov [3]

Answer:

For an ordered pair (x,y) that a set contain :

x = Domain of the relation

y = Range of the relation

In a relation x can have two or more than two ranges i.e a x can have more or more than two images.

So, Domain = First element of ordered pair that the following relation R contains ={(−3, 4), (5, 0), (1, 5), (2, 8), (5, 10)}= -3, 5, 1,2,5

But the element 5 is Occuring twice.

Domain = { -3,1,2,5} →→Option A

3 0
3 years ago
Read 2 more answers
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