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sweet-ann [11.9K]
3 years ago
8

Solve for x in the equation 3x2-18+5=47

Mathematics
1 answer:
Airida [17]3 years ago
7 0
3x^2-18+5=47
3x^2 = 60
x^2 = 20
x = 4.472 , x = - 4.472
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The sum of three certain consecutive numbers is 240. Find the 3 numbers.
BartSMP [9]

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Step-by-step explanation:What three consecutive integers have a sum of 240? What three consecutive integers have a sum of 240? Which means that the first number is 79, the second number is 79 + 1 and the third number is 79 + 2. Therefore, three consecutive integers that add up to 240 are 79, 80, and 81.

5 0
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Evaluate the expression 9x , when x= 4, 7, and 2.5<br> I need help ;-; pls
Otrada [13]

Step-by-step explanation:

When x = 4,

<em> </em>

9x = 9 \times 4 = 36

when x = 7

9x = 9 \times 7 = 6 3

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Can y’all help find the surface area please and thank you
solong [7]

<u>To find the area of a complex shape</u>:

 ⇒ must cut the whole shape into a simpler shape

  • square with side lengths of 4 in
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<u>Let's calculate:</u>

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             Area = \frac{1}{2}*4*8 + \frac{1}{2}*4*8=16+16=32\\

  • 2 triangles with a base of 4 in. and a height of 10 in.

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  • square with side lengths of 4 in

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<u>Answer: 88 in²</u>

<u></u>

Hope that helps!

8 0
2 years ago
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Helga [31]

Answer:

This answer is based on that I don't know what that 2 is for

Step-by-step explanation:

There are many different answers for this question

Area is l times w so 4 times 4 = 16 the lengths could be 4

If one of the sides is 2 then the length must be 8 because 8 times 2 is 16

7 0
3 years ago
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