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Anvisha [2.4K]
3 years ago
9

This is 7th grade math and answer ASAP. Tell me which answer choice in q.1. I will gave brainliest, thx, and 5 star if answered

right.

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
3 0
P=S1+S2+S3
P=2.3x+14+2x-0.2x+15
P=4.1x+29
The answer is the first one
Hope this helps
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I dont know what I'm doing! could you help me​
photoshop1234 [79]

Answer:

c = 24.34

Step-by-step explanation:

Here, we can use the cosine rule

Generally, we have this as:

a^2 = b^2 + c^2 - 2bcCos A

12^2 = 14^2 + c^2 - 2(14)Cos 19

144 = 196 + c^2 - 26.5c

c^2 - 26.5c + 196-144 = 0

c^2 - 26.5c + 52 = 0

We can use the quadratic formula here

and that is;

{-(-26.5) ± √(-26.5)^2 -4(1)(52)}/2

(26.5 + 22.23)/2 or (26.5 - 22.23)/2

24.37 or 2.135

By approximation c = 24.34 will be correct

8 0
3 years ago
Which of the following types of waves can move through water but cannot move through a vacuum where there is no matter?
Vikki [24]
B is your answer!

Hope I helped!

Contact me for more!

FLVS teacher,
 ~Amber Fish

7 0
3 years ago
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Andrew answered 21 out of 25 questions correctly on his math test. Written as a decimal, what portion of Andrew's answers were c
soldier1979 [14.2K]
Since we are calculating the amount that he got correct, we must divide the numerator by the denominator or make the denominator equal 100. I will do it the second way as it is easier in this case.

25*4 = 100
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84/100 = 0.84

As a decimal, Andrew got 0.84 of his test correct. Hope this helps!
8 0
3 years ago
Find the radius r of C.
garik1379 [7]

Answer:

r=10.5

Step-by-step explanation:

  • (r+7)^2=r^2+14^2
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  • 14r=196-49
  • 14r=147
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≿━━━༺❀༻━━━≾

hope it helps..

have a great day!!

7 0
3 years ago
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Julia writes 2 fractions with the same denominator that have numerators 5 and 7 what could the denominator be if the sum is less
Alborosie
5+7=11 so any denominator above 12
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3 years ago
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