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11111nata11111 [884]
3 years ago
8

Which expression is a factor of 21x2 + 13x – 20?​

Mathematics
2 answers:
Keith_Richards [23]3 years ago
6 0
U need to add more information to this individual question please answer this, thank you
Vladimir [108]3 years ago
5 0

Answer:

B. 7x - 5

Step-by-step explanation:

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Use the given conditions to write an equation for each line in point-slope form and slope-intercept form.
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(y - 0) =  \frac{1}{3} (x - 0)

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Which expression is equvalent to 5(x+3)
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Read 2 more answers
While sitting on a rooftop 95 feet off the ground Mary flicks a twig up and off of the ledge with the initial vertical velocity
cestrela7 [59]

Answer:

The maximum height of the twig is 96.6 feet off the ground

Step-by-step explanation:

To determine the maximum height of the twig,

First, we will determine the height distance covered by the twig after Mary flicks the twig up.

From the question,

Mary flicks a twig up and off of the ledge with the initial vertical velocity of 10 feet per second, that is

the initial velocity of the twig is 10 feet/second

At maximum height, the final velocity is 0

From on the equations of motions for bodies moving upwards,

v² = u² - 2gh

Where v is the final velocity

u is the initial velocity

g is the acceleration due to gravity (Take g = 9.8m/s² = 32.17 ft/s²)

and h is the height

From the question

u = 10 feet/second

and v = 0 feet/second

Putting the values into the equation

v² = u² - 2gh

0² = 10² - 2(32.17)h

0 = 100 - 64.34h

64.34h = 100

h = 100/64.34

h = 1.6 feet

This is the height distance covered by the twig after Mary flicks it up.

Now, the maximum height of the twig will be the sum of the height of the rooftop from the ground and the height distance covered by the twig.

That is,

Maximum height = 95 feet + 1.6 feet

Maximum height = 96.6 feet

Hence, the maximum height of the twig is 96.6 feet off the ground.

7 0
3 years ago
ive males with an​ X-linked genetic disorder have one child each. The random variable x is the number of children among the five
Nonamiya [84]

Answer:

a   c    d  

.............................................

5 0
3 years ago
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