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Yanka [14]
3 years ago
12

For what value of n is 20 = {n+4? a) b) * c) 40 d) 60

Mathematics
2 answers:
Advocard [28]3 years ago
6 0
I think it might be 40 I’m not sure but good luck
kiruha [24]3 years ago
5 0
Answer: N= 16

Explanation: 20-4=16
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ddd [48]

Answer:

34

Step-by-step explanation:

8 0
3 years ago
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Carla is selling chocolate bars for a fundraiser. Her goal is to sell 600 chocolate bars to win the top prize for selling them.
IceJOKER [234]

Answer:

She needs to sell for 64 more hours

Step-by-step explanation:

4 0
3 years ago
Compare the light gathering power of an 8" primary mirror with a 6" primary mirror. The 8" mirror has how much light gathering p
tankabanditka [31]

Answer:

1.778 times more or 16/9 times more

Step-by-step explanation:

Given:

- Mirror 1: D_1 = 8''

- Mirror 2: D_2 = 6"

Find:

Compare the light gathering power of an 8" primary mirror with a 6" primary mirror. The 8" mirror has how much light gathering power?

Solution:

- The light gathering power of a mirror (LGP) is proportional to the Area of the objects:

                                           LGP ∝ A

- Whereas, Area is proportional to the squared of the diameter i.e an area of a circle:

                                           A ∝ D^2

- Hence,                              LGP ∝ D^2

- Now compare the two diameters given:

                                           LGP_1 ∝ (D_1)^2

                                           LGP ∝ (D_2)^2

- Take a ratio of both:

                           LGP_1/LGP_2 ∝ (D_1)^2 / (D_2)^2

- Plug in the values:

                               LGP_1/LGP_2 ∝ (8)^2 / (6)^2

- Compute:             LGP_1/LGP_2 ∝ 16/9 ≅ 1.778 times more

6 0
3 years ago
Solve: 28 − ≥ 7( − 4)<br> (show your work)<br> real answers only pls :(
ohaa [14]
You’ll distribute the 7 from (x-4) so your equation will be
28-x>_ 7x-28
then you’ll combine like terms (-x and 7x and 28 and -28
-56>_ -8x
divide by -8 on both sides and flip your sign
you’re answer is x<_7
x is less then or equal to 7
6 0
2 years ago
-3b + 7 = -15 + 2b <br>how to solve this question?<br>​
dsp73

Answer:

Step-by-step explanation:

-3b - 2b + 7 = -15

-5b  = -22

b = 22/5

5 0
3 years ago
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