Can someone help me please

Answers

Answer 1

Answer: Answer: 56 times

Pls mark brainleist i really need it

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Emily drove to town with an average speed of 32 miles per hour, and then back home with an average speed of 38 miles per hour. If her total traveling time was 42 minutes, how far is it from home to town?

Answers

Answer:

12.16 miles

Step-by-step explanation:

Speed - s, Distance - d, Time - t

Equation of time is:

t = d/s

Given,

s1 = 32 m/h, s2 = 38 m/h, t1 + t2 = 42 min = 42/60 h = 7/10 h

Total time is the sum of time values to and from the town:

d/32 + d/38 = 7/10
d/16 + d/19 = 7/5
d(1/16 + 1/19) = 7/5
d(16 + 19) = 7(16*19)/5
35d = 425.6
d = 425.6/35
d = 12.16

It is given that,

→ s1= 32 miles/h

→ s2 = 38 miles/h

Now t1 + t2 is,

→ 42 min

→ 42/60 hours

→ 7/10 hours

The formula we use,

→ Time = Distance/Speed

→ t = d/s

Then the total time is the,

Sum of time values to and from the town.

→ d/32 + d/38 = 7/10

→ d/16 + d/19 = 7/5

→ d{(1/16) + (1/19)} = 7/5

→ d(16 + 19) = (7/5) × (16 × 19)

→ 35d = 425.6

→ d = 425.6/35

→ d = 12.16

Hence, the distance is 12.16 miles.

When Lena went to her friend's sleepover on Friday night, the temperature was –
7°F. By the next morning, the temperature had risen to
–
1°F.
What was the change in temperature during the sleepover?

Answers

The change in temperature during Lena's sleepover was 6°F. It can therefore be said that the temperature rose by 6°F during the sleepover.

How do we calculate the change in temperature?

To find the change in temperature, subtract the initial temperature from the final temperature, in other words, Subtract the temperature on Friday night from the temperature on Saturday morning.

Change in temperature = Final temperature - Initial temperature

Change in temperature = (−1°F) - (−7°F)

Change in temperature = −1 + 7

Change in temperature = 6°F

So, the temperature rose by 6°F during the sleepover.

Find more exercises on temperature change;

brainly.com/question/21764930

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Answer:

Step-by-step explanation:

Write the phrase as an expression. Then evaluate when x=5 .6 more than the product of 8 and a number x

Expression:

When x=5, the value of the expression is

Answer:

Answers

Answer:

The answer is 46 when x = 5

Step-by-step explanation:

8*x + 6

So x = 5

8*5 + 6

40 + 6

Answer:

Step-by-step explanation:

Solve the equation. 4c = 3

Answers

The solution of the linear equation 4·c = 3, obtained by solving for the variable c is; c = 3/4

What is a linear equation?

A linear equation is an equation that can be expressed in the form; y = m·x + c

The equation 4·c = 3 is a linear equation

In order to solve the equation 4·c = 3 for the variable c, the variable c needs to be isolated to one side of the equation, by dividing both sides of the equation by 4 as follows;

4·c = 3

(4·c)/4 = 3/4

c = 3/4

Therefore, the solution of the equation, 4·c = 3 is; c = 3/4

Learn more on linear equations here: brainly.com/question/30338252

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Answer:

Brainelist~~~!!!

Step-by-step explanation:

4c=3

c=3/4

c=0.75

There are approximately 7.7 billion humans on earth.If the virus spreads beyond the 200 person town, how long will it be until everyone on the planet is infected