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Sedaia [141]
3 years ago
10

The number of students who participated in sports

Mathematics
1 answer:
Ede4ka [16]3 years ago
4 0

The answer is B im doing sum rn but its B ok

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What is the value of x, when x2 + 5 = 21?
djverab [1.8K]

Hey there!

  • \bold{x^2+5=21}
  • <em>Firstly, subtract by the number \bold{5}  on each of your sides</em>
  • \bold{x^2+5-5=21-5}
  • \bold{Cancel:5-5} because it gives us the result of \bold{1}
  • \bold{Keep:21-5}  because it equals: \bold{16}
  • \bold{x^2=16}
  • <em>Nextly, we have to take our square root </em>
  • \bold{x=}±\bold{\sqrt{16}}
  • <em>Solve the square root and you have found your answer</em>
  • <em>\boxed{\boxed{\bold{Answer:x=4[or]x=-4}}} \bold{\checkmark}</em>

Good luck on your assignment and enjoy your day!

~\bold{LoveYourselfFirst:)}

4 0
3 years ago
P(x)=2x^3-11x^2+ax-40 if x+4 is a factor of this polynomial what is the value of a
Vika [28.1K]

Answer:

a = -86.

Step-by-step explanation:

By the Factor Theorem, if x + 4 is a factor then P(-4) = 0, so:

P(-4) = 2(-4)^3 - 11(-4)^2 + a(-4)- 40 = 0

-128 - 176 - 4a - 40 = 0

-4a = 128 +176 + 40

-4a = 344

a = -86.

3 0
3 years ago
Mathematics pls help me.
uysha [10]

Answer:

I think the answer may be 465

Step-by-step explanation:

105+115=220

150+95=245

245+220=465

8 0
3 years ago
Solve for c. −58c=20<br><br> A-34<br> B-32<br> C26<br> D28
Dominik [7]
The answer is A: -34.
8 0
3 years ago
I will mark brainliest but please help I don’t get this question...
ElenaW [278]
The slope is 1/4......
5 0
3 years ago
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