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Lyrx [107]
3 years ago
13

Jess jogs at a rate of 6 miles per hour. The next time she jogs she increases her speed to a rate of 7 mile per hour. How long w

ill it take her to jog 6 miles.
Mathematics
1 answer:
Arada [10]3 years ago
8 0

Answer:

0.86 hour

Step-by-step explanation:

Jess jogs at a rate of 6 miles per hour.

The next time she jogs she increases her speed to a rate of 7 mile per hour.

The new rate of Jess's jogging is 7 miles per hour

How long will it take her to jog 6 miles?

Hence:

7 miles = 1 hour

6 miles = x hours

Cross Multiply

7 × x = 6 × 1

x = 6/7

x = 0.8571428571 hour

Approximately = 0.86 hour

It will take Jess 0.86 hour to jog for 6 miles

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7x+2y&gt;-5(-1,1)<br><br> Determine whether the ordered pair is a solution of the linear inequality
boyakko [2]

Answer:

  • No

Step-by-step explanation:

<u>Given inequality:</u>

  • 7x + 2y > - 5

<u>Verify if (-1, 1) is correct:</u>

  • 7(-1) + 2(1) > - 5
  • - 7 + 2 > - 5
  • - 5 > - 5

False inequality, it is not the solution

7 0
2 years ago
A jar of peanut butter contains 454 g with a standard deviation of 10.2 g. Find the probability that a jar contains more than 46
Fofino [41]

Answer:

The probability that a jar contains more than 466 g is 0.119.

Step-by-step explanation:

We are given that a jar of peanut butter contains a mean of 454 g with a standard deviation of 10.2 g.

Let X = <u><em>Amount of peanut butter in a jar</em></u>

The z-score probability distribution for the normal distribution is given by;

                                Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean = 454 g

           \sigma = standard deviation = 10.2 g

So, X ~ Normal(\mu=454 , \sigma^{2} = 10.2^{2})

Now, the probability that a jar contains more than 466 g is given by = P(X > 466 g)

            P(X > 466 g) = P( \frac{X-\mu}{\sigma} > \frac{466-454}{10.2} ) = P(Z > 1.18) = 1 - P(Z \leq 1.18)

                                                                  = 1 - 0.881 = <u>0.119</u>

The above probability is calculated by looking at the value of x = 1.18 in the z table which has an area of 0.881.

4 0
3 years ago
The local gasoline distributor just built a new storage tank. For safety reasons they need to enclose the tank within a circular
vlada-n [284]

Answer:

62.8 feet

Step-by-step explanation:

Radius of the fencing is:

6+4 = 10 feet

Circumference = 2×pi×r

= 2×pi×10

= 20pi

= 62.83185307 feet

3 0
2 years ago
Help please I dont understand this math problem
Nostrana [21]

Answer:

24

Step-by-step explanation:

4*3*2=24 there your answers I hope this helps

8 0
3 years ago
Read 2 more answers
I need help how to solve it DON'T give me the Answer plz ....!!!
stiks02 [169]
F is the answer lol BTW it's f
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2 years ago
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