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7nadin3 [17]
3 years ago
9

M^ 2 + m − 90 factorize

Mathematics
2 answers:
laiz [17]3 years ago
5 0

Answer:

(m+10)(m-9)

Step-by-step explanation:

To factor this equation we want to find two numbers that multiply to -90 but also add/subtract to 1.

Those two numbers are 10 and -9 (10×-9=-90, 10-9=1)

cluponka [151]3 years ago
3 0

Answer:

(m-9)(m+10)

Step-by-step explanation:

When you are given an expression in this format

ax^2+bx+c

You must find two numbers that add up to <em>b</em> while the product is <em>c</em>.

You do trial and error to figure it out for your equation.

m^2+m-90

Hmm... what two numbers add up to 1 and multiplied together equal -90.

Start off with pairs that can equal 90.

45 2

18 5

9 10

Ok, well 45 * 2 does equal 90 but 45 + 2 = 47and 45 + -2 = 43 but there's no way I can make it equal to 1. Next!

18 * 5 equals 90 but 18 + -5 = 13 and 18 + 5 = 23, I can just tell that there's no way I can make this equal to 1.

9 * 10 equals 90, 9 + 10 = 19 but 9 + -10 = -1. Now, that's interesting, We have -1 but we need 1. All we have to do is flip the order. 10 + -9 = 1. And -9 * 10 = -90, PERFECT!

Now use the two numbers and put it in factored form.

(m-9)(m+10)

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Yo i need the answer
klemol [59]

Answer:

c

Step-by-step explanation:

im pretty sure an additive inverse is just the absolute value

5 0
3 years ago
3x+9<br> -------- how do I solve this?<br> 4x+12
Reptile [31]
Put common terms in evidence and simplify:

\boxed{\frac{3x+9}{4x+12}=\frac{3(x+3)}{4(x+3)}=\frac{3}{4}}
5 0
3 years ago
Read 2 more answers
Find the measure of angles 1, 2, 3, 4, 5 ,6 and 7
vivado [14]

Answer:

angle1=70

angle2=65

angle4=115

angle7=45

angel6=45

angle5=45

Step-by-step explanation:

110+angle1 = 180

angle1 =180-70

angle1 = 70

115+angle2=180

angle2=180-115

angle2=65

angle4=115 because lines are parallel

angle1+angle2+angle7=180 because triangle

70+65+angle7=180

135+angle7=180

angle7=180-135

angle7=45

angel6=45

angle5=45

8 0
2 years ago
Which is bigger 1.4 or 1.04?​
jok3333 [9.3K]

Answer:

1.4

Step-by-step explanation:

This is because the 4 is in the hundreds place but the 0 is in the hundreds in the second one.

(Decimals are backwards from whole numbers.)

8 0
3 years ago
Read 2 more answers
Bob and Mark talk about their families. Bob says he has 3 kids, the product of their ages is 72. He gives another clue: the sum
Damm [24]
Not this riddle again


3 kids
what you are supposed to do is factor 72 and see their sums
1+1+72=74
1+2+36=39
1+3+24=28
1+4+18=23
2+2+18=22
1+6+12=19
2+3+12=17
1+8+9=18
2+4+9=15
2+6+6=14
3+3+8=14
3+4+6=13


notice that all the sums are different except for the 2 that add to 14
since there is not enough info, we can conclude that the sum was 14 and that the ages is either 2,6,6 or 3,3,8
after he says, "the youngest is called justice"
now we know there is a youngest
it cannot be 3,3,8 because 3 and 3 are both youngest
therefor the ages are
2,6 and 6 years old
7 0
3 years ago
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