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3 years ago

Which choice is equivalent to expresision below?

Mathematics

1 answer:

DIA [1.3K]3 years ago

5 0

We can simplfiy to be $-\sqrt{100}$

$\sqrt{-1} * \sqrt{100}$ .

We know that $\sqrt{100}$ is 10 and $-1$ is i, so the answer is 10i, or D.

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What is the solution set of these system5x-2y=17 and 4x-7=13?

MatroZZZ [7]

Answer:

x=5

y=4

Step-by-step explanation:

Step 1:

Let us solve for x using the $4x-7=13$ equation by isolating terms containing the variable:

$4x-7=13\\4x=20\\\fbox{x=5}$

Great! x is 5... let's find y.

Step 2:

Since we know the value of x, we can use what we know to find y using the other equation:

$5x-2y=17\\$

Given that x=5, we can replace x with 5.

$5*5-2y=17\\25-2y=17\\2y=8\\\\\fbox{y=4}$

I hope this helps! Let me know if you have any questions :)

3 0

2 years ago

What is the written form for (8,8)

Sav [38]

Answer:

81 900 000 000 000 is 8.19 × 10¹³

Step-by-step explanation:

Write the first number 8.

Add a decimal point after it: 8.

Now count the number of digits after 8. There are 13 digits.

So, in standard form: 81 900 000 000 000 is 8.19 × 10¹³

5 0

3 years ago

Jenifer had 30$ to spend on her self she spent 1/5 Of the money in a sandwich 1/6 for a ticket to a museum and 1/2 Of It On a Bo

denis-greek [22]

Your answer is $29.13 I hope this helped, I apologize for the late response!

3 0

3 years ago

What is the solution to this equation?

ycow [4]

Answer:

D. x = 21

Step-by-step explanation:

x - 4= 17

Step 1: Add 4 to both sides

x - 4= 17

+4 +4

x = 21

3 0

3 years ago

Read 2 more answers

How many more marmosets are there than mandrills?

LekaFEV [45]

Answer:

Step-by-step explanation:

5 0

3 years ago