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murzikaleks [220]
3 years ago
12

Use the distributive property to simplify 7(2a + 5).

Mathematics
2 answers:
Alenkinab [10]3 years ago
4 0

Answer: 14a+35

Step-by-step explanation:

If you are using the distributive property, you would multiply 7*2a+&*5= 14a+35

Vinil7 [7]3 years ago
3 0

Answer:

14a+35

Step-by-step explanation:

7×2a=14a

7×5=35

=14a+25

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What is the LMC for 2x^2 - 8x + 8 and 3x^2 + 27x -30?
Vsevolod [243]

Answer:

2

Step-by-step explanation:

1st step: solve the exponential number

2x^2=4x

3x^2=9x

2nd step: rewrite the number sentence with the exponent solved

4x-8x+8                                  9x+27x-30

3rd step : solve  

 4x-8x=-4x                               9x+27x=36x

-4x+8=                                            36x-30=

    4                                                   6                  

                                                                                                   

Step 4: See what least common multiples they have in common

4 LCM =2 * 2= 4                          6 LCM= 2*3=6


So the LCM is 2

4 0
3 years ago
Find the percent change
tatuchka [14]

Answer:

THE answer is 4% because u divide

5 0
3 years ago
I need helpp!!!!!!!!!!!!
Rasek [7]
Hey,
We can see here 2 of the angles are equal and the third one is a right angle right?
That means it is an isosceles triangle since they have 2 equel angles and a right anlgle.

Another feature of the isosceles triangle is that 2 sides are equal.
We are given one side is 5.5 right?
So the side BC has to be 5.5 or the side AB has to be 5.5
In isosceles triangles the side opposite to the 90 degree angle is the hypotenuse.This means it is the longest angle.
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8 0
2 years ago
2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.
shepuryov [24]

Answer:

Step-by-step explanation:

\alpha+\beta=\dfrac{5}{2} \\\\\alpha*\beta=\dfrac{1}{2} \\\\\alpha^2+\beta^2=\dfrac{21}{4} \ (see\ previous\ post)\\\\(\alpha+\beta)^4=\dfrac{625}{16} \\\\=\alpha^4+\beta^4+4*\alpha^3*\beta+6*\alpha^2*\beta^2+4*\alpha*\beta^3\\\\=\alpha^4+\beta^4+4*(\alpha*\beta)(\alpha^2+\beta^2)+6*\alpha^2*\beta^2\\\\\alpha^4+\beta^4=(\alpha+\beta)^4-4*(\alpha*\beta)(\alpha^2+\beta^2)-6*\alpha^2*\beta^2\\\\= \dfrac{625}{16} -4*\dfrac{1}{2} *\dfrac{21}{4} -6*(\dfrac{1}{2})^2 \\\\

= \dfrac{625}{16}- \dfrac{168}{16}-\dfrac{24}{16}\\\\\\= \dfrac{433}{16}

7 0
2 years ago
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