SOMEONE HELP ME PLEASE

Mathematics

2 answers:

lawyer [7]2 years ago

8 0

Answer:

y = 90

Step-by-step explanation:

You can use proportions to answer this question.

$\frac{30}{-3} =\frac{y}{-9}$

Cross multiply 30 to -9; -3 to y

$-270=-3y$

Isolate <em>y</em> by dividing -3 on both sides

$y=90$

Darya [45]2 years ago

6 0

Answer:

Step-by-step explanation:

30/-3 = ?/-9

Cross Multiply-

30 × -9 = -270

-3 × ? = -3

-270 ÷ -3 = 90

y = 90

You might be interested in

A tree house costs $530. You plan to save $10 each week. Your parents will help pay $80 of the cost. Your savings plan can be mo

ivanzaharov [21]

The answer would be 45 weeks, since you do 530-80 since that is the part the parents will foot, which will be 450 left. Then you do that divided by 10 since you plan to save 10 dollars a week and therefore are left with 45 weeks.

5 0

3 years ago

The equation of the parabola is (y-1)^2 = 16(x+3)

Mandarinka [93]

We know that

if the y terms is squared so it opens left or right

Is a Horizontal Parabola, the equation is of the form
(y-k)²=4(p)(x-h)
vertex is (h,k)
and
p is distance from focus to vertex, also distance from vertex to directrix
if p>0, then it opens to the right and directrix is to the left of vertex
if p<0, then it opens to the left and directrix is to the right of vertex

so
(y-1)²=4(4)(x-(-3))
vertex is (-3,1)
4>0 so directrix is to left of vertex
left is in x direction
-3-4=-7
directrix is x=-7

the answer is
x=-7

see the attached figure