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2 years ago

HELP!!!!!!!! THIS IS HARD!!!! I WILL GIVE BRAINLIEST!!! 1.Which proportion would you use to solve the following problem?

Mathematics

2 answers:

MAVERICK [17]2 years ago

7 0

Answer:

no 1 answer is: C
no 2 answer is : D
no 4 answer is: A
no 5 answer is: C

noname [10]2 years ago

4 0

Answer:

Step-by-step explanation:

1. A

2.B

3. Don't see the choices, but the correct answer would be

4.A

5.B

6.A

7.B

8.1000/1=x/4200 1 Kilogram=1,000 grams

9.B

10. Answer: 1/5 = 8/x

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How much would the mark up of 35% of $10.00 be?

Damm [24]

Answer:

$3.50

Step-by-step explanation:

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3 years ago

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ivolga24 [154]

The graph of line g has an x-intercept of (2,0) and a y-intercept of (0,4).

Which statement(s) comparing these two functions is(are) true?

F. The y-value when x=−2 for line f is greater than the y-value when x=2 for line g.
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3 years ago

Which set of numbers could represent the side lengths of a right triangle? A. 0.1, 0.2, 0.3 B. 1.8, 2.4, 3 3, 8, 10 D. 5, 7, 12

Lelechka [254]

Answer:

B. 1.8, 2.4, 3

Step-by-step explanation:

You can make use of pythagore to prove each of the given options and you'll see that B is the correct answer:

A) $\sqrt{0.1^{2}+0.2^{2}}=0.22$

B) $\sqrt{1.8^{2}+2.4^{2}}=3$

C) $\sqrt{3^{2}+8^{2}}=8.54$

D) $\sqrt{5^{2}+7^{2}}=8.6$

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3 years ago

Since 300 - 1 does not equal 1 - 300, we say that subtraction does not have the commutative property property of zero associativ

alexira [117]

3n yo _2222224455555

Step-by-step explanation

3 0

2 years ago

Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.

slava [35]

Answer:

After solving the power:

$\bold{2(cos60^\circ+isin60^\circ)}$

Rectangular form:

$\bold{1+i\sqrt3}$

Step-by-step explanation:

Given the complex number:

$2(cos20^\circ+isin20^\circ)^3$

To find:

The indicated power by using De Moivre's theorem.

The complex number in rectangular form.

Rectangular form of a complex number is given as $a+ib$ where a and b are real numbers.

Solution:

First of all, let us have a look at the De Moivre's theorem:

$(cos\theta+isin\theta )^n=cos(n\theta)+isin(n\theta )$

First of all, let us solve:

$(cos20^\circ+isin20^\circ)^3$

Let us apply the De Moivre's Theorem:

Here, n = 3

$(cos20^\circ+isin20^\circ)^3 = cos(3 \times 20)^\circ+isin(3 \times 20)^\circ\\\Rightarrow cos60^\circ+isin60^\circ$

Now, the given complex number becomes:

$2(cos60^\circ+isin60^\circ)$

Let us put the values of $cos60^\circ = \frac{1}{2}$ and $sin60^\circ = \frac{\sqrt3}{2}$

$2(\dfrac{1}{2}+i\dfrac{\sqrt3}2)\\\Rightarrow (2 \times \dfrac{1}{2}+i\dfrac{\sqrt3}2\times 2)\\\Rightarrow \bold{1 +i\sqrt3 }$

So, the rectangular form of the given complex number is:

$\bold{1+i\sqrt3}$

3 0

3 years ago