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3 years ago

Factoring quadratic trinomials in the form (ax 2 + bx + c. where a = ≠ 1

1 answer:

8 0

You can try the ac method.
1. Try to factor a common factor from all terms.
2. Multiply ac.
3. Find two factors of ac that add to b, call them p and q.
4. Rewrite the trinomial with the bx term broken up into into px + qx.
5. Factor by grouping.

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Find x, the answer is 5 but how do I get it?

dolphi86 [110]

$\red{ \rule{40pt}{555555pt}}$

6 0

3 years ago

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The mean of five numbers is 8. when another number is added the mean is 7. find the number added

sasho [114]

Answer:

$\large \boxed{\sf \ \ 2 \ \ }$

Step-by-step explanation:

Hello,

The mean of five numbers is 8 so we can write

$\dfrac{x_1+x_2+x_3+x_4+x_5}{5}=8$

When another number is added the mean is 7, let s note x the another number we can write

$\dfrac{x_1+x_2+x_3+x_4+x_5+x}{6}=7$

From the first equation we can say

$x_1+x_2+x_3+x_4+x_5=8*5=40$

So the second equation becomes

$\dfrac{x_1+x_2+x_3+x_4+x_5+x}{6}=7\\\\ \dfrac{40+x}{6}=7\\\\40 + x = 6*7=42\\\\ x = 42-40 = 2\\$

The solution is then 2

Hope this helps

4 0

3 years ago

Five more than twice a number is less than ten as an inequality? plz help!!!!!!!

Sever21 [200]

Answer:

2x+5<10

Step-by-step explanation:

please mark as brainliest

5 0

3 years ago

What number is 344% of 107

olga55 [171]

Answer:

368.08

So I turn the numbers into fractions so 344% would be 344/100 because percentages are out of 100. Since it is 344% OF 107, you'd put 107 on the bottom of the fraction and the answer will go on top. I multiply the IS with the OF (IS is the top number and OF is the bottom) so you'd multiply 107x344 to get 36808. Since 344 is a percent (out of 100) you have to do divide the answer by 100 to get 368.08

I hope that helps!

8 0

3 years ago

70 points!! look at image attached

ch4aika [34]

Combine like terms: (9x-6)+(8x+9)

9x+8x=17x

-6+9=3

(9x-6)+(8x+9)=17x+3

4 0

3 years ago

Read 2 more answers