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Free_Kalibri [48]
3 years ago
15

7x^2 + 14x − 105plzzz helllp​

Mathematics
1 answer:
Anna [14]3 years ago
4 0

Factor the polynomial

7(x-3)(x+5)

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Points A, P and B are collinear on AB
DIA [1.3K]
You need to be more specific to be able to help you.
7 0
4 years ago
9. You are standing on a mountain that is 6842 feet high. You are looking down at your campsite, creating an angle of depression
Mkey [24]

Answer:

<u>8,764.53 feet</u>

Step-by-step explanation:

See the attached figure which represents the question.

Let the distance between campsite and the base of the mountain = d

The total height = 6842 + 5.6 = 6,847.6 feet.

As shown at the graph, the angle x and the depression angle are alternate angles, so they are congruent.

∴∠x = 38°

tan x = opposite/adjacent = (total height)/d = 6847.6/d

So, d = 6847.6/tan x

        = 6847.6/tan 38° = 8,764.53 feet (to the nearest hundredth)

so, the distance between campsite and the base of the mountain = 8,764.53 feet

4 0
4 years ago
Write a mathematical expression for the area of the triangle as a function of the length of the base. Use the letter s to repres
Illusion [34]

Answer:

  A = s²√15.9375

Step-by-step explanation:

An altitude of the triangle divides it into two right triangles, each with a leg of s/2 and a hypotenuse of 8s. Then the length of the altitude (h) is given by the Pythagorean theorem as ...

  h² + (s/2)² = (8s)²

  h = s√(64 -1/4) . . . . . . . subtract s²/4 and take the square root

Then the area is ...

  A = (1/2)sh = (s/2)(s√63.75)

We can put all the constants in one place to get ...

  A = s²√15.9375

7 0
3 years ago
1. a. Maddy lost 18 pounds in 8 weeks. Find her rate of pounds lost per week.
Serjik [45]

Answer:

Step-by-step explanation:

2 and 1/4 lbs per week

5 0
3 years ago
PLEASE IS FOR MY HOMEWORK
Neporo4naja [7]

a. 7x + 52 (2x + 5x) (40 + 12)

b. 13x + 142 (2x+5x+6x) (40 + 12 - 10)

c. 246 (16 + 40 + 40 + 100 + 12 + 48 - 10)

6 0
4 years ago
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