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VladimirAG [237]
3 years ago
7

(x2 + 3x + 1) + (2x2 + 2x) HINT

Mathematics
2 answers:
ale4655 [162]3 years ago
5 0

Answer:

3x^{2} + 5x + 1

Step-by-step explanation:

<u>Step 1:  Combine like terms</u>

(x^{2} + 3x + 1) + (2x^{2} + 2x)

(x^{2} + 2x^{2} + (3x + 2x) + (1)

3x^{2} + 5x + 1

Answer:  3x^{2} + 5x + 1

viva [34]3 years ago
4 0

Answer:

3x^2+5x+1

Step-by-step explanation:

(x^2 + 3x + 1) + (2x^2 + 2x)

Combine like terms

x^2 + 2x^2  + 3x +2x   +1

3x^2+5x+1

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The circular base of a cone has a radius of 5 centimeters. The height of the cone is 12 centimeters, and the slant height is 13
shepuryov [24]

Answer:

Hence, the surface area of cone is:

282.6 cm^2 which is approx 283 cm^2.

Step-by-step explanation:

We are given:

  • The circular base of a cone has a radius of 5 centimeters.

           i.e. r=5 cm.

  • The height of the cone is 12 centimeters

               i.e. h=12 cm.

  • The slant height is 13 centimeters.

                    i.e. l=13 cm.

Now we know that the surface area(S.A.) of cone is given by:

S.A.=\pi r(l+r)

Hence by putting the value of l,r and π in the formula we get:

S.A.=3.14\times 5\times (13+5)\\\\S.A.=15.7\times 18\\\\S.A.=282.6

Hence the surface area of cone is 282.6 cm^2 which is approx 283 cm^2.

4 0
3 years ago
Read 2 more answers
What is a cost per unit?
Ghella [55]
For example

2 pencils cost one dollar

Then one pencil costs 50 cents. We just found out the cost per unit of the pencil.

Hope that helped :)
7 0
4 years ago
Pilar and her sister Marisol live near the beach. Pilar has 80 seashells in her collection when Marisol started collecting seash
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Answer:

You can always try socratic the app

Step-by-step explanation:

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4 0
3 years ago
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FG is the midsegment of isosceles ABC, and is the midsegment of trapezoid CDEF. Segments EF, KM and DC are parallel. Find the m
Readme [11.4K]
BC=60 cm because FG is the midsegment of triangle ABC so it separates the sides of the triangle into two equal segments and 30(2)=60.
GF=22 cm because according to the Triangle Midsegment Theorem, GF=1/2(AC). GF=1/2(44 cm). GF=22 cm. Next, we can conclude EG and DA are 22 cm because the diagram marks them as congruent. So CD=44 cm+22 cm=66 cm. Then, we find that EF=EG+GF=22 cm+22 cm=44 cm. So, using the Trapezoid Midsegment Theorem, we know that KM=1/2(DC+EF). KM=1/2(66 cm+44 cm). KM=1/2(110 cm). KM=55 cm.

Hope this helps and makes sense!
4 0
3 years ago
Solve the quadratic equation X2+5X-24=0
Dahasolnce [82]
The answer is x = 3 or x = -8.
Let's solve your equation step by step. 
Step 1 - Factor left side of equation
(x - 3)(x + 8)=0
Step 2 - Set factors equal to 0.
x - 3 = 0 or x + 8 = 0
x = 3 or x = -8

6 0
4 years ago
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