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3 years ago

PLEASE ANSWER ASAP !!!!!!!!!!!!!!!!!!! WILL GET BRAINLEST IF CORRECT!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

strojnjashka [21]3 years ago

8 0

Answer:

x=50

Step-by-step explanation:

50 + 2x =150

x=50

50+30+2x=180

x=50

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Find the quotient of x-8 over x-10 by inspection.

slava [35]

$\frac{x-8}{x-10}$

$\frac{x-10+2}{x-10}$

$\frac{x-10}{x-10}+\frac{2}{x-10}$

$1 + \frac{2}{x-10}$

7 0

4 years ago

URGENT PLEASE HELP!!!!!

telo118 [61]

(1)

we are given

$\frac{y}{6} =x$

we can find for y

multiply both sides by 6

$\frac{y}{6}*6 =6*x$

$y=6x$

we can see that y is directly proportional to x

so, option-D........Answer

(2)

y varies inversely with x

so, we can write it as

$y=k\frac{1}{x}$

now, we are given

y=5 when x=2.5

so, we can plug it here

$5=k\frac{1}{2.5}$

and then we can solve for k

$5*2.5=2.5*k\frac{1}{2.5}$

$k=12.5$

now, we can plug back

$y=\frac{12.5}{x}$

we can plug x=20

$y=\frac{12.5}{20}$

$y=0.625$ .............Answer

(3)

we are given

The current, I, in a circuit varies inversely with the resistance, R

so, we can write it as

$I=\frac{k}{R}$

we have R=12 when I=3

so, we can plug it

$3=\frac{k}{12}$

now, we can solve for k

$3*12=12*\frac{k}{12}$

$k=36$

now, we can plug back

$I=\frac{36}{R}$

we can plug R=6

$I=\frac{36}{6}$

$I=6$ ................Answer

6 0

3 years ago

Solving Square Root Worksheet (x - k)^2 Part 3

erastova [34]

Answer:

7. x = -2 +/- $4i\sqrt{5}$

8. x = 2 or x = 6

9. x = -2 +/- $\frac{\sqrt{26} }{2} i$

10. t = -3 +/- $\sqrt{35}$

Step-by-step explanation:

7. Subtract 320 from both sides: 4(x + 2)^2 = -320

Divide by 4: (x + 2)^2 = -80

Square root both sides: x + 2 = +/- $\sqrt{-80}$ . We need to add the imaginary i to this: +/- $\sqrt{-80}$ = +/- $i\sqrt{80}$ = +/- $4i\sqrt{5}$

Subtract 2 from both sides: x = -2 +/- $4i\sqrt{5}$

8. Add 18 to both sides: 7(x - 4)^2 = 28

Divide by 7: (x - 4)^2 = 4

Square root both sides: x - 4 = +/- 2

Add 4 to both sides: x = 4 +/- 2 ⇒ x = 2 or x = 6

9. Add 5 to both sides: -2(x + 2)^2 = 13

Divide by -2: (x + 2)^2 = -13/2

Square root both sides: x + 2 = +/- $\sqrt{-13/2}$ . We again need i: +/- $\sqrt{-13/2}$ = +/- $i\sqrt{13/2} =$ +/- $\frac{\sqrt{26} }{2} i$

Subtract 2 from both sides: x = -2 +/- $\frac{\sqrt{26} }{2} i$

10. Multiply by 5 on both sides: (t + 3)^2 = 35

Square root both sides: t + 3 = +/- $\sqrt{35}$

Subtract 3: t = -3 +/- $\sqrt{35}$

Hope this helps!

3 0

4 years ago

Read 2 more answers

Mrs. Crown gave a typing test to her students. She recorded each student's average typing speed, in words per minute. The dot

Margaret [11]

B.

Explanation

Shows the average

8 0

4 years ago

If april is your starting month, what month will it be in 62 months?

Monica [59]

Start at April....60 months is 5 years.....12 x 5 = 60....leaving 2 months...so in 62 months, it is June

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3 years ago