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3 years ago

Compare 8 ⋅ 107 to 2 ⋅ 104. Plz Answer 25 Points!!!

2 answers:

5 0

8*107 > 2*104 IT'S KINDA LOGIC HERE 8 = 2^3
so 2^3 * 107 > 2*104

for the rest we can divide the two
8*10^7 = 2^3*10^7
2*10^4 2*10^4

after simplification we will have 2^2 * 10^3 = 4*1000 = 4000 true
so 8*10^8 is 4 000 times larger than 2*10^4

Shalnov [3]3 years ago

3 0

The answer is the first row.

Explanation:

8 * 10^7 = 80,000,000 -- 2 * 10^4 = 20,000

80,000,000 divided by 20,000 = 4,000, so it is 4,000 times larger

Therefore, the first answer is correct.

Hope I helped and good luck!

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At 8:00 pm on Wednesday a friend in San Francisco, California (based on 120 degrees W) calls a friend in Miami, Florida (75 degr

____ [38]

Answer:

11:00 pm Wednesday

Step-by-step explanation:

Given

Current Time in San Francisco:

$Time = 8:00pm\ (Wednesday)$ at 120 deg W

Required

Determine the current time at Miami at 75 deg W

First, we need to calculate the hours difference between San Franciso and Miami

$Hours = 120\deg - 75\deg$

$Hours = 45\deg$

Convert degrees to hours.

$15\deg =1\ hour$

So:

$Hours = 45\deg$

$Hours = 3 * 15\deg$

$Hours = 3 * 1\ hour$

$Hours = 3\ hours$

The above is the time difference between San Francisco and Miami;

The time in Miami is then calculated as:

$Miami = 8:00pm + 3\ hours$

$Miami = 11:00pm$

Hence, the time at Miami is: 11:00 pm Wednesday

6 0

2 years ago

Priya tried to solve an equation step by step. \qquad\begin{aligned} \dfrac f{0.25}&=16\\\\ \\ \dfrac{f}{0.25} \cdot0.25&amp

Zarrin [17]

Answer:

f=4

Step-by-step explanation:

Priya Tried to solve the equation below step-by-step:

$\qquad\begin{aligned} \dfrac f{0.25}&=16\\ \dfrac{f}{0.25} \cdot0.25&=16\cdot0.25&\green{\text{Step } 1}\\ f&=4&\blue{\text{Step } 2}\\\end{aligned}$

The steps are correct and indeed f=4.

7 0

3 years ago

Read 2 more answers

What is 1/6 of 42 How to solve it

Ainat [17]

You would just divide it by 6 wich maked is 7

3 0

3 years ago

Which of the following are factors of x^4 – 16? Select all that apply.

nekit [7.7K]

<h2>Answer:</h2><h2>x^2+4 and X+2</h2>

Solution,

x^4-16

= (X^2)^2-(4)^2

Use the formula(a^2-b^2)

= (x^2+4)(x^2-4)

=(x^2+4)(x^2-2^2)

=(x^2+4)(X+2)(x-2)

Hope it helps

Good luck on your assignment

5 0

3 years ago

Read 2 more answers

Apply the square root principle to solve (x-5)^2-40=0

Nitella [24]

Answer: {5 ± 2√10, 5 - 2√10}

Step-by-step explanation: First isolate the binomial squared by adding 40 to both sides to get (x - 5)² = 40.

Next, square root both sides to get x - 5 = ± √40.

Notice that root of 40 can be broken down to 2√10.

So we have x - 5 = ± 2√10.

To get x by itself, add 5 to both sides to get x = 5 ± 2√10.

So our answer is just {5 ± 2√10, 5 - 2√10}.

As a matter of form, the number will always come before the

radical term in your answer to these types of problems.

In other words, we use 5 ± 2√10 instead of ± 2√10 + 5.

4 0

3 years ago