MATHEMATICS HIGH SCHOOL

the expression 3x + 20 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. what is the rock climber’s initial height above sea level?

Answers

Answer 1
Answer:

Answer:

The rock climber’s initial height above sea level was 20 meters.

Step-by-step explanation:

This is because y-intercept is 20, meaning at time 0 minutes, the rock climber was at 20 meters.

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in the diagram shown below parallel lines m and m are crossed by transversal r and s which of the following is the sum of angles 1 and 2​

Answers

Answer:3

Step-by-step explanation:m<1=105 because it is supplementary with the angle that is corresponding to 75 m<2=46 because these angles are corresponding.

Charles can do a job in 1 hour, Bill can do the same job in 2 hours, and Bob can do the jobin 3 hours. How long does it take them to do the job working together?

Answers

1hr +2hr+3hr is 6 hours job done
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In 2009, the life expectancy is about 80 years. Assume that, due to modern advances, life expectancy gains 5.5 years every decade. From 2009, in how many years would humanity achieve a life expectancy of 110 years?

Answers

Answer:

60 years

Step-by-step explanation:

2009 -> 80 years

             +5.5

2019 ->  85.5 years

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2029  -> 91 years

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2039  -> 96.5 years

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2049  -> 102 years

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Sally needs 2 cups of flour to make her cake. She has 1 cups of flour. How much flour will she need to borrow to have enough to bake her cake?

Answers

she needs one more cup of flower

She needs = 2 - 1 = 1

So, she needs 1 cup of flour more.

Find the value of y when x equals 2 , -8x-5y=1

Answers

-8x - 5y = 1
when x = 2
-8(2) - 5y = 1
-16 - 5y = 1
5y = -16 - 1 = -17
y = -17/5

(3) - 4/5 (5) + 2/9 - 2/3 (3) - 1/5 (5)

Answers

-3.77777777778 is going to be your answer
I did this problem and got 25 u 1/3
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