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goldfiish [28.3K]
3 years ago
13

???Please help because I don’t understand this at all~Question is the picture

Mathematics
2 answers:
Studentka2010 [4]3 years ago
7 0

Answer:

You will know that b<a

Step-by-step explanation:

Why? Well, it is simple really. They are OPPOSITES. Therefore, the inequality will be opposite.

Example:

    a=1, b=2

    1<2

    a's opposite=-1, b's opposite=-2

    -1>-2

  -2<-1

sp2606 [1]3 years ago
4 0

When we multiply both sides of an inequality by a negative number the sense of the inequality is swapped.

So if we multiply both sides of

a < b

by -1 we find that

-a > -b

Answer: -a > -b

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Find the vertex form of: y=2x^2-5x+13
Ket [755]
The vertex form of a quadratic function is:

 f(x) = a(x - h)² + k

The coordinate (h, k) represents a parabola's vertex.

In order to convert a quadratic function in standard form to the vertex form, we can complete the square.

y = 2x² - 5x + 13

Move the constant, 13, to the other side of the equation by subtracting it from both sides of the equation.

y - 13 = 2x² - 5x

Factor out 2 on the right side of the equation.

y - 13 = 2(x² - 2.5x)

Add (b/2)² to both sides of the equation, but remember that since we factored 2 out on the right side of the equation we have to multiply (b/2)² by 2 again on the left side.

y - 13 + 2(2.5/2)² = 2(x² - 2.5x + (2.5/2)²)

y - 13 + 3.125 = 2(x² - 2.5x + 1.5625)

Add the constants on the left and factor the expression on the right to a perfect square.

y - 9.875 = 2(x - 1.25)²

Now, we need y to be by itself again so add 9.875 back to both sides of the equation to move it back to the right side.

y = 2(x - 1.25)² + 9.875

Vertex: (1.25, 9.875)

Solution: y = 2(x - 1.25)² + 9.875

Or if you prefer fractions

y = 2(x - 5/4)² + 79/8
7 0
3 years ago
You spin the spinner and flip a coin. Find the probability of the compound event.
zimovet [89]

Answer:

the compound probability is 1/8.

Step-by-step explanation:

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4 0
3 years ago
If x= 27 and y= 54 then what does w equal
beks73 [17]
The answer is 81 because 27 x 3
4 0
3 years ago
Read 2 more answers
Find the measure of the indicated angle.
marusya05 [52]

Answer:

the answer is 96°

Step-by-step explanation:

it is an isosceles triangle as it's 2 sides are equal.

for an isosceles triangle, the angles made by the equal sides with the third side are equal.

and the sum of all angles in a triangle = 180°

42 + 42 + x = 180

x = 180 - 84

X = 96°

4 0
3 years ago
A wall is 300 square feet.a gallon of paint covers 110 square feet. What is an appropriate conversion factor to help determine h
saveliy_v [14]

Answer:

(1 gallon)/(100 ft^2)

Step-by-step explanation:

(1 gallon)/(100 ft^2) is a good conversion factor.  We could also use (100 ft^2)/(1 gallon), but I like the first, since the calculation is simpler:

(300ft^2)*/(1 gallon)/(100 ft^2) = 3 gallons  [I like multiplication better than division, and especially here, since 300/100 is 3, if my memory is correct.

8 0
2 years ago
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