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iVinArrow [24]
3 years ago
15

115) Working alone, it takes Sebastian nine hours to

Mathematics
1 answer:
Elden [556K]3 years ago
6 0

It will take them 20 hours, since the question is asking how long it will take them when working together you add each of their hours together,9+11=20

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Compressed by a factor
kari74 [83]
I think your talking about quadratics, so

They didn’t specify which way the parabola was translated, right or left, up or down?

Since there wasn’t specification of direction, I will use positive (to the right) and up (upwards)

a = 1/2
h = +5
k = +5

y = a(x-h)^2+k
y = 1/2 (x - 5)^2 + 5

Now if your writing it in standard form (above was vertex form) you’d just expand it

y = 1/2 (x-5)(x-5) + 5
y = 1/2 [(x^2) -5x -5x ] + 25 + 5
y = 1/2 x^2 - 5x + 30
6 0
3 years ago
I need help with these two
djyliett [7]

Answer:

Part 1) Slope-intercept form

Part 2) The slope of 2.20 tells me the rate per mile and the y-intercept of 2.50 tells me the flat fee

Step-by-step explanation:

Part 1) we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

y=2.50+2.20x

This is a linear equation in slope intercept form

where

m=2.20

b=2.50

Part 2) we have that

x -----> represent the number of miles

y ----> represent the total charge in dollars

The slope is

m=\$2.20\ per\ mile ---> unit rate

The y-intercept is

b=\$2.50 ----> initial value or flat fee

therefore

The slope of 2.20 tells me the rate per mile and the y-intercept of 2.50 tells me the flat fee

4 0
3 years ago
Which strategy best explains how to solve this problem?
photoshop1234 [79]
It is C, if it falls 14 ft. and it travels back up 7 ft. and then falls another 7 ft, and stops at the ground now you add it all up 14+7+7=28. hope that helps you.
8 0
3 years ago
Read 2 more answers
A number cube was rolled as part of an experiment. The results are in the table below. The fraction StartFraction 1 over x EndFr
Svetlanka [38]

Answer:

6

Step-by-step explanation:

3 0
3 years ago
To drive to work, Dave has to drive 20 miles east and then 15 miles north. If there were a direct road going northeast, how many
suter [353]
By the Pythagorean theorem:

x= \sqrt{20^2+15^2}= \sqrt{400+225}= \sqrt{625}=25 \ miles

7 0
3 years ago
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