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2 years ago

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What are the solutions of the following system?StartLayout Enlarged left-brace 1st row x squared + y squared = 25 2nd row 2x + y

= 25 EndLayout

1 answer:

Alexus [3.1K]2 years ago

4 0

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MATH HELP!!!!!<br><br> If y = 15 when x = 2, what is the value of x when y = 7?

Ede4ka [16]

<u>Direct Variation:</u> $\frac{y}{x} = k$

$\frac{15}{2} = k$

when y = 7: $\frac{7}{x} = \frac{15}{2}$

14 = 15x

$\frac{14}{15} = x$

<u>Inverse variation:</u> y*x = k

15 * 2 = k

30 = k

when y = 7: 7 * x = 30

$x = \frac{30}{7}$

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=e%5E%7B2x%7D%20%3D%20ln%205" id="TexFormula1" title="e^{2x} = ln 5" alt="e^{2x} = ln 5" align=

KiRa [710]

$e ^{2x} = ln5$

Solve for the real domain

$e ^{2x} = ln(5)$

if $f(x) =g(x),$ then $ln(f(x))= ln(g(x))$

$ln(e ^{2x} ) = ln(ln(5))$

Solve : <span> $ln(e ^{2x} ) = ln(ln(5))$
</span>
use the logarithmic definition :

$ln(e^{f(x)} ) = f(x)$

$ln(e^{2x} ) = 2x$

$2x=ln(ln(5))$

Divide both sides by 2 :

$\frac{2x}{2} = \frac{ln(ln(5))}{2}$

$x= \frac{ln(ln(5))}{2}$

hope this helps!

8 0

3 years ago

Three students wrote expressions on their dry-erase boards.

OlgaM077 [116]

Answer:

Student 2 and Student 3

Step-by-step explanation:

Student 2

-(5r - 3s + 1)

= - 5r +3s - 1

Student 3

= - 5r +3s - 1

3 0

2 years ago

Six identical circles fit inside the rectangle as shown below. If the rectangle has a width of 15

irakobra [83]

Answer:

The radius of each circle is 2.5 units

Step-by-step explanation:

7 0

3 years ago

I have the answers but how do u get the answers for these

Marina86 [1]

Answer.com download the app or better yet look for a version like that on google

4 0

2 years ago