Ask question

Ask question

All categories

3 years ago

7

what is the answer to The value of y is directly proportional to the value of X. If y=55, when X=120, what is the value of y whe

n X=60?

1 answer:

allsm [11]3 years ago

4 0

Answer:

27.5

Step-by-step explanation:

y = kx

55 = 120k

k = 55/120

y = 55/120 x 60

y = 55/2

y = 27.5

You might be interested in

Write the perimeter of the triangle as a simplified polynomial. Then factor the polynomial

oksian1 [2.3K]

Answer:

c

Step-by-step explanation:

3 0

3 years ago

Is this right if not please tell me the right answer

zhuklara [117]

Answer: 57% for the first and 41% for the second

Step-by-step explanation:

Treatment 1 consists of 40 people and 23 had improved health take 23 and divide it by 40 and you get 0.575 multiply that by 100 and you get 57% do the same for the second question and you get 0.416 multiply by 100 and you get 41%

8 0

3 years ago

HELP ASAP!! - Natalie is working two summer jobs, making $7 per hour babysitting and making $11 per hour clearing tables. In a g

LenKa [72]

11x11=121
$140-121=19
19/7=
It would take approximately 2hours and 71 minutes to meet her requirements.

3 0

3 years ago

Which expression is equivalent to 5 sqrt 32x5y10z15?

KonstantinChe [14]

The expression equivalent to 5 sqrt 32x5y10z15 is 2xy2z3

5 0

2 years ago

A ball is thrown from an initial height of 3 meters with an initial upward velocity of 30 m/s. The ball's height h (in meters) a

yanalaym [24]

$h=3+30t-5t^2\implies 13=3+30t-5t^2\implies 0=-10+30t-5t^2 \\\\\\ 5t^2-30t+10=0\implies 5(t^2-6t+2)=0\implies t^2-6t+2=0$

now, it doesn't give us nice looking integers, so let's plug that into the quadratic formula.

$~~~~~~~~~~~~\textit{quadratic formula} \\\\ \stackrel{\stackrel{a}{\downarrow }}{1}t^2\stackrel{\stackrel{b}{\downarrow }}{-6}t\stackrel{\stackrel{c}{\downarrow }}{+2}=0 ~\hspace{10em} t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a} \\\\\\ t= \cfrac{ - (-6) \pm \sqrt { (-6)^2 -4(1)(2)}}{2(1)}\implies t=\cfrac{6\pm\sqrt{36-8}}{2}$

$t=\cfrac{6\pm\sqrt{28}}{2}\implies t=\cfrac{6\pm\sqrt{2^2\cdot 7}}{2}\implies t=\cfrac{6\pm 2\sqrt{7}}{2}\implies t=\cfrac{2(3\pm 1\sqrt{7})}{2} \\\\\\ t=3\pm \sqrt{7}\implies t= \begin{cases} 3+\sqrt{7}\\ 3-\sqrt{7} \end{cases}\implies t\approx \begin{cases} 5.65\\ 0.35 \end{cases}$

8 0

3 years ago