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luda_lava [24]
3 years ago
9

I will mark brianliest

Mathematics
2 answers:
Galina-37 [17]3 years ago
3 0

Answer:

its either  a or b

Step-by-step explanation:

im learing this but im in  5th

crimeas [40]3 years ago
3 0

Answer:

I'm pretty sure it's B

Step-by-step explanation:

because y\\ only goes down to -3 and must be less than positive infinity if it doesn't cap anywhere else.

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6 children shared 26 sweets. Each got the same number. How many sweets were left over?
Simora [160]
12? because they would all get 4 evenly and there would be 2 left over
8 0
2 years ago
Write an equation for a parabola that has a vertex (1, 2) and passes through the point (3, -6).
Alex

Answer:

y= -2x²+4x.

Step-by-step explanation:

the common equation of the parabola is y=ax²+bx+c, where a, b, c - numbers.

1) the coordinates of the vertex are:

x_0=-\frac{b}{2a} \ and \ y_0=\frac{4ac-b^2}{4a}.

2) if according to the condition x₀=1, then b= -2a.

If according to the condition y₀=2, then   2=\frac{4ac-b^2}{4a}=\frac{4ac-4a^2}{4a}=c-a;

it means that c=a+2.

3) if b= -2a; c=a+2 and the point (3;-6) belongs to the given parabola, then it is possible to substitute them into the common equation of the parabola:

-6=3²*a-6a+a+2; ⇔ a= -2.

4) if a= -2, then b=-2a=4, and c=a+2=0.

5) if a=-2, b=4 and c=0, then the required equation of the parabola is:

y= -2x²+4x.

6 0
2 years ago
Solve the simultaneous equations
riadik2000 [5.3K]

Answer:

x = -2, y = 3

Step-by-step explanation:

2x + 3y = 5

5x - 2y = -16

In order to find the value of a variable, we must eliminate the other variable by multiplying the equations to get the same coefficient.

We can multiply the first equation by 5 and the second one by 2 to get the same coefficient for x, the equations then become:

10x + 15y = 25

10x - 4y = -32

Now we can subtract:

19y = 57

y = 3

Since we know the value of y, we can substitute it into one of the original equations:

2x + 3(3) = 5

2x + 9 = 5

2x = -4

x = -2

3 0
2 years ago
5/25 convert into a decimal ​
7nadin3 [17]

Answer:

0.2

Step-by-step explanation:

5/25 as a decimal is 0.2.

3 0
3 years ago
Read 2 more answers
What is the value of the expression w – 4 when w = –17?
JulsSmile [24]
=(-17) - 4
=(-17) + (-4)
=(-21)

3 0
3 years ago
Read 2 more answers
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