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3 years ago

Divide (16x^6-12x^4+4x^2) by 4x^2

Mathematics

2 answers:

BabaBlast [244]3 years ago

8 0

It will equal up to 488x²

Also there is a app called photomath that will be helpful too.

Olin [163]3 years ago

7 0

4x^4-3x^2+1
this is the right answer. I checked it twice.

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four balls of wool will make 8 knitted caps.how many balls of wool will malcom need if he wants to make 6 caps?

miss Akunina [59]

We can express this as a ratio. 4 balls :8 caps.

Then simplify. 1 ball: 2 caps.

We have to make caps equal to 6, so multiply by 3. For consistency, we need to multiply the number of balls by 3 too.

3 balls: 6 caps.

So Malcolm needs 3 balls of wool.

8 0

3 years ago

Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!

Sladkaya [172]

Order of Operation is the step by step procedure that you should follow when solving muti-step equations. Its usally abbreviated as:

P arathesis

Example: 2(5+4)

E xponents

Example: 4^8

M utiply

Example: 5x

D ivide

21/3

A dd

Example: 4+9

S ubtract

Example: 78-21

4 0

3 years ago

Read 2 more answers

Need help please hurry

ss7ja [257]

9514 1404 393

Answer:

x = 20°

Step-by-step explanation:

For questions like this, it is helpful to remember that an exterior angle is equal to the sum of the remote interior angles.

110° = 2x + 70°

40° = 2x

20° = x

_____

Similarly, ...

y = x + 70° = 20° +70°

y = 90°

6 0

3 years ago

Suppose you take a 30-question, multiple-choice test, in which each question contains 4 choices: A, B, C, and D. If you randomly

mina [271]

Answer:

(a) The probability you pass the exam is 0.0000501.

(b) The expected number of correct guesses is 7.5.

(c) The standard deviation is 2.372.

Step-by-step explanation:

We are given that you take a 30-question, multiple-choice test, in which each question contains 4 choices: A, B, C, and D. And you randomly guess on all 30 questions.

Since there is an assumption of only 1 correct choice out of 4 which means the above situation can be represented through binomial distribution;

$P(X =x) = \binom{n}{r}\times p^{r}\times (1-p)^{n-r} ; x = 0,1,2,3,......$

where, n = number of trials (samples) taken = 30

r = number of success = at least 60%

p = probbaility of success which in our question is the probability

of a correct answer, i.e; p = $\frac{1}{4}$ = 0.25

Let X = Number of questions that are correct

So, X ~ Binom(n = 30 , p = 0.25)

(a) The probability you pass the exam is given by = P(X $\geq$ 18)

Because 60% of 30 = 18

P(X $\geq$ 18) = P(X = 18) + P(X = 19) +...........+ P(X = 29) + P(X = 30)

= $\binom{30}{18}\times 0.25^{18}\times (1-0.25)^{30-18} + \binom{30}{19}\times 0.25^{19}\times (1-0.25)^{30-19} +.......+ \binom{30}{29}\times 0.25^{29}\times (1-0.25)^{30-29} + \binom{30}{30}\times 0.25^{30}\times (1-0.25)^{30-30}$

= 0.0000501

(b) The expected number of correct guesses is given by;

Mean of the binomial distribution, E(X) = $n \times p$

= $30 \times 0.25$ = 7.5

(c) The standard deviation of the binomial distribution is given by;

S.D.(X) = $\sqrt{n \times p \times (1-p)}$

= $\sqrt{30 \times 0.25 \times (1-0.25)}$

= $\sqrt{5.625}$ = 2.372

8 0

4 years ago

Draw 4 circle shade 2 circle

marishachu [46]

Out of 4 circles, 2 of them are shaded in
2 out of 4 are shaded
How many are shaded?
2/4 or 1/2

So half of the drawn circles are shaded.

Hope this helps!

7 0

3 years ago