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Evgen [1.6K]
4 years ago
10

I need help because i’m taking a science test right now !

Mathematics
2 answers:
Fudgin [204]4 years ago
8 0
The correct answer is f. blood is rushed through vessels
damaskus [11]4 years ago
7 0

Answer:

blood is pushed through vessels

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What number is 12 more than 43
Nata [24]
55. If it says 12 more, you add 12 to 43 to get 55. 
4 0
3 years ago
Read 2 more answers
Find the standard form of the equation of the parabola with a focus at (0, 2) and a directrix at y = -2.
LUCKY_DIMON [66]

Since the focus is at (0, 2) and directrix is y = -2

point where both of these have the same x-value will be at (0, 2) for the focus and (0, -2) for the directrix.

The vertex will also have the same x-value so it will be (0, y).

y-value is half-way between the y-value of the focus, and the y-value of the directrix at x = 0.

Directrix y-value is -2 at x = 0 and for the focus it's 2 at x = 0. 

Halfway between y = -2 and y = 2 is y = 0. 

So the vertex of the parabola occurs at (0, 0). 

So that's x^2 = 4ay = 4(2)y = 8y. 

y = 1/8*x^2

hope it helps

7 0
4 years ago
Read 2 more answers
Don't write it seems to smart
sergeinik [125]
I think you miss types your question
5 0
4 years ago
A function is defined by f (x) = 5 (2 minus x). What is f(–1)? –5 5 15
anzhelika [568]

Answer: 15

Step-by-step explanation: 2 minus negative 1 is the same as 2+1. 2 plus 1 is 3 and 5 times 3 is 15. Therefore, 15 is your answer.

8 0
3 years ago
A.(0,-3)<br> B.(3,0)<br> C.(0,3)<br> D.(-3,0) <br> Help please
Vinvika [58]

Answer:

Step-by-step explanation:

the solution to the system

= find the intersection of two lines

method( one )

solve the equations ( find(x , y) )

( 1 ) y = -x +3

( 2 ) y = x - 3

now , we let ( 1 ) + (2 )

we have 2y =0  ,thus y = 0

from ( 1 ) y = - x +3 , we know y = 0  ,

we rewrite ( 1 ) as 0 = -x + 3,thus x = 3

method( two)

see the intersection point of two lines

so the ans is B.(3 , 0)

6 0
3 years ago
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