2 years ago

Alex has 21 marbles zach has 19 times as many marbles as alex how many marbles does zach have

Mathematics

1 answer:

Yuri [45]2 years ago

4 0

Zach has 399 marbles because 21*19 is equal to 399.

You might be interested in

-47=x+15 solve the equation

myrzilka [38]

-47 = x + 15
Rearrange it to isolate x:
-47 - 15 = x
-62 = x

5 0

2 years ago

Read 2 more answers

CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION? 4x+2=7x-37

grin007 [14]

<h2>Answer:</h2><h2>x = 13</h2><h2 /><h2>Hope this helps!!</h2>

5 0

2 years ago

Read 2 more answers

in a certain year the average e-mail user sent or received 148 e-mails each day. The number of e-mails received was 4 more than

Lorico [155]

Answer:

1136 received each day

Step-by-step explanation:

148(2)+4= 1136

8 0

2 years ago

X - y = 4<br> x + y = 8<br><br> The x-coordinate of the solution to the system shown is _____.

Valentin [98]

Hello :
<span>X - y = 4...(1)
x + y = 8...(2)
(1)+(2) :2x= 12

</span><span>The x-coordinate of the solution to the system shown is __6___.</span>

5 0

2 years ago

Read 2 more answers

What is the solution of the equation over the complex numbers

denis-greek [22]

<u>Answer:</u>

$2i\sqrt{3}$

$-2i\sqrt{3}$

<u>Step-by-step explanation:</u>

$x^2 + 12$

First set the equation to 0

$x^2 + 12$

$x^2 + 12 = 0$

Second, get the 12 on the right side of the equal sign by adding a -12 to each side

$x^2 + 12 = 0$

$x^2 + 12 + (-12) = 0 -12$

$x^2 = -12$

Square root both sides of the equal sign.

$x^2 = -12$

$\sqrt{x^2} = \sqrt{-12}$

Take the square root on left sides of the equal sign.

$\sqrt{x^2} = \sqrt{-12}$

$x = \sqrt{-12}$

Take the square root on the right side of the equal sign. Remember $\sqrt{-1} = i$

$x = \sqrt{-12}$

$x = \sqrt{4}*\sqrt{-1}\sqrt{3}}$

$x = 2i\sqrt{3}$

$x = -2i\sqrt{3}$

8 0

3 years ago