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allsm [11]
3 years ago
10

Plz help!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Andrews [41]3 years ago
8 0
Perpendiculars are any lines that intersect to make or forms a right angle.
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P(x) = x^4+ax^3-x^2+bx-12 has factors of (x-2) and (x+1). Solve the equation P(x)=0​
Feliz [49]

Answer:

because P(x) has factors of (x-2) and (x+1) => x = 2 and x = -1 are the solutions of P(x)

so we have:

\left \{ {{2^{4}+2^{3}a-2^{2}+2b-12   =0} \atop {1-a-1-b-12=0}} \right.\\=>\left \{ {{8a+2b=0} \atop {a+b=-12}} \right.\\\left \{ {{4a+b=0} \atop {a+b=-12}} \right.\\\left \{ {{a=4} \atop {b=-16}} \right.

=> P(x)=x^{4} + 4x^{3}-x^{2} -16x-12

With P(x) = 0

=> x^{4}+4x^{3}-x^{2} -16x-12 = 0

=> ........

Step-by-step explanation:

5 0
3 years ago
Solve for x.<br> 4(2x - 1) - 7 = 4 - x + 6
Akimi4 [234]
<span>The answer is that x = 21/9.

Start with the original:                  4(2x - 1) - 7 = 4 - x + 6
Now distribute the 4:</span>                   <span> 8x - 4 - 7 = 4 - x + 6.
Now combine the like terms.       8x - 11 = -x + 10.
Now add x to both sides.             9x - 11 = 10.
Now add 11 to both sides.            9x = 21.
And divide by 9 on both side.      x = 21/9. </span>
6 0
3 years ago
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I will give brainliest to the right answer:)
yan [13]

Answer:

i gussing add them together

Step-by-step explanation:

7 0
3 years ago
What is the length of a rectangle that has a width of 2.5 centimeters and an area of 20.5 square centimeters?
olchik [2.2K]
Do 20.5 divided by 2.5 which equals
8.2
7 0
4 years ago
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The number of measles cases increased 10.2% to 58 cases this year, what was the number of cases prior to the increase? (Express
jok3333 [9.3K]

Answer:

There were approximately 53 cases of measles before the increase.

Step-by-step explanation:

Since there was an increase of 10.2% this means that the value we have now is the value we had prior plus the increase, in other words this is 100% of the cases before the increase plus 10.2%, so we have now 110.2% of cases. We know that this value represents 58 cases, so we can use a rule of three in order to determine the prior value. This is seen bellow:

100% -> x

110.2% -> 58

110.2*x = 100*58

x = 5800/110.2 = 52.63

Which is approximately 53 cases.

8 0
3 years ago
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