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Inessa05 [86]
3 years ago
6

Help with this question as well please

Mathematics
1 answer:
Lelechka [254]3 years ago
8 0

Answer:

195 >= 3x

65 >= x

Step-by-step explanation:

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What multiplies to be -18 and adds to be -9?
Harrizon [31]
IMPORTANT:
If you're trying to factor a quadratic in Algebra I:
There are no two integers that can solve this problem!
Your quadratic is <em>prime</em>!

If you're trying to solve a quadratic (find x):
The factoring approach will not work for the same reasons listed above.
Try using splitting the middle or the quadratic formula instead.

Here's how you would solve it from a more advanced approach.
If you don't know what this stuff is, just ignore it.
ab = -18, a + b = -9
Find a in terms of b.
a = -9-b
Substitute this for a in the first equation.
(-9-b)b = -18
-9b-b² = -18
Multiply everything by -1 to get rid of all these negative signs.
b² + 9b = 18
Bring over that 18.
b² + 9b - 18 = 0
Apply the quadratic formula.
(a = 1, b = 9, c = -18)
\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-9\pm\sqrt{9^2-4(1)(-18)}}{1\times2}=\frac{-9\pm\sqrt{81+72}}{2}=\frac{-9\pm\sqrt{153}}{2}=\boxed{\frac{-9\pm3\sqrt{17}}{2}}
If you need to write two distinct numbers, just write out one with a + and one with a - in place of the plus-minus sign.
8 0
3 years ago
14 divided by 3/8 ? (The question mark is not part of the problem...neither is this..)
dmitriy555 [2]
3 divided by 8 is .375
14 divided by .375 is 37.3 repeating
and the fraction for that is 112/3

4 0
3 years ago
Read 2 more answers
Which equation represents a proportional relationship? A) y = 9x B) y = 9x + 1 C) y = 9x + 9 D) y = 9 x
aliya0001 [1]

Hello! I think your answer is A) y= 9x

7 0
2 years ago
Read 2 more answers
Solve for x<br> Pls help
Dennis_Churaev [7]

Step-by-step explanation:

collect the like terms 12x+4=9x+8

12x-9x=8-4

3x=4

X=1.333

8 0
3 years ago
Read 2 more answers
What is the value of the expression-2(3x-2)+x+9 when x= -3
nikitadnepr [17]

We know x=-3

Replace x with -3

-2(3[-3]-2)+(-3)+9

simplify

-2(-9-2)-3+9

-2(-11)-3+9

22-3+9

do math

22-12

Your Answer Is 10

4 0
2 years ago
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