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2 years ago

It's about 5 AM, haven't slept in 28 hours, need help.

Mathematics

1 answer:

Minchanka [31]2 years ago

7 0

Answer:

2nd option

Step-by-step explanation:

8 $x^{4}$ - 4x³ - x + 2 - (2 $x^{4}$ - 8x² - x + 10) ← distribute by - 1

= 8 $x^{4}$ - 4x³ - x + 2 - 2 $x^{4}$ + 8x² + x - 10 ← collect like terms

= 6 $x^{4}$ - 4x³ + 8x² - 8

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Can you help me with this question?

RoseWind [281]

Answer:

Reason SAS postulate

Step-by-step explanation:

The two triangles must be congruent.

Reason: SAS postulate

6 0

2 years ago

Quickly solve (x+7)2=121, for x. Graph the solution on a number line.

asambeis [7]

Answer:

The value of the x is 53.5 or x=53.5

Step-by-step explanation:

Given data in the question:-

$(x+7)2=121$

We have to find the value of x.

Solution:-

$(x+7)2=121\\=>2x+14=121\\=>2x=121-14\\=>2x=107\\=>x=107/2\\=>x=53.5\\$

Hence the answer is 53.5

3 0

2 years ago

Evaluate the expression 10b/a if b = 6 and a = 2

zimovet [89]

Answer:

Step-by-step explanation:

10b/a

b = 6

a =2

10(6)/2

10x6 / 2 = 60/2

= 30

8 0

2 years ago

Read 2 more answers

In a certain manufacturing process, it is known that, on average, 1 in every 100 items is defective.

Rashid [163]

Answer:

A. 0.009899

B. 0.005624

Step-by-step explanation:

Data:

Let the probability that an item is defective = $\frac{1}{100}$

The probability that the item is not defective = $\frac{99}{100}$

The probability that the fifth item is defective = $\frac{1}{100}* \frac{98}{99}$

= 0.009899

Probability that one in 5 items is defective = 0.005624

5 0

3 years ago

In the expression below, a is an integer. 12^3+ax-20 if 3x+4 is a factor of the expession above, what is the value of a

SVEN [57.7K]

Our function is:

$f(x)=12^3+ax-20$

Now, if $3x+4$ is a factor of $f(x)$ then $x=\frac{-4}{3}$ must satisfy the equation:

So, $f(\frac{-4}{3} )=0$

Putting $x=\frac{-4}{3}$

We get,

$f(\frac{-4}{3} )=12^3+a(\frac{-4}{3} )-20=0$

$12^3+\frac{-4}{3} a-20=0$

$\frac{-4}{3} a=20-12^3=20-1708$

$a=-1708 \times \frac{-3}{4} =1281$

So, the value of 'a' for the given expression is 1281.

4 0

2 years ago