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ch4aika [34]
2 years ago
9

The focus of the parabola -40x = y2 is: (-10, 0) (0, -10) (0, 10) (10, 0)

Mathematics
1 answer:
Luda [366]2 years ago
3 0

Answer:

Option A: (-10,0)

Step-by-step explanation:

The given equation of the parabola is in the form of y^2=4ax where the focus is located at (a,0). Therefore, the focus of the parabola is (-10,0).

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Marina CMI [18]
Multiply both sides by 2
7 0
2 years ago
a field in the shape of a trapezoid has an area of 13,687.5 square yards .the length of one base is 150yards, and the lenght of
Leviafan [203]
A=\frac{1}{2}(b_1+b_2)h=13687.5\\\frac{1}{2}((150)+(215))h=13687.5\\(365)h=27375\\h=75

h = 75 yards.
6 0
3 years ago
Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (fxg)(-5).<br><br> a. -59<br> b. 3<br> c. 26<br> d. -6
DedPeter [7]

Answer:

78

Step-by-step explanation:

The given functions are:

f(x) =  - 2x - 7

and

g(x) =  - 4x + 6

(f \times g)(x) = f(x) \times g(x)

(f \times g)(x) = ( - 2x - 7)( - 4x + 6)

When we plug in x=-5, we get:

(f \times g)( - 5) = ( - 4 \times -  5 + 6)( - 2 \times  - 5 - 7)

(f \times g)( - 5) = ( 20 + 6)( 10 - 7)

(f \times g)(5) = ( 26)( 3) =7 8

3 0
3 years ago
The Jurassic Zoo charges $13 for each adult admission and $4 for each child . The total bill for the 238 people from a school tr
slava [35]

Answer:

42 adults and 196 children went to the zoo

Step-by-step explanation:

Let

x ----> the number of adults

y ----> the number of children

we know that

The total bill for the 238 people from a school trip was $1330

so

x+y=238 ----> equation A

13x+4y=1,330 ----> equation B

Solve the system of equations by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

the solution is the point (42,196)

see the attached figure

therefore

42 adults and 196 children went to the zoo

6 0
3 years ago
Will some smart people help me out? :) 20 points
babymother [125]

Answer:

22.3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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