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vichka [17]
3 years ago
7

Two step equation-2x+15=-9​

Mathematics
1 answer:
Marina CMI [18]3 years ago
6 0

Answer:

x =12​

Step-by-step explanation:

-2x+15=-9​

Subtract 15 from each side

-2x+15-15=-9-15

-2x = -24

Divide by -2

-2x/-2 = -24/-2

x =12​

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Answer:

x = 15

Step-by-step explanation:

-x = -15

x = -1 × (-15)

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Answers to 5 and 6 please need help please!
Tresset [83]

My friend says 5 is 60 and 6 is b.

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3 years ago
Given the sequence 8, 12, 16, 20, 24, what is the sum of the 31st and 19th terms?
erica [24]

Answer:

First term (a) =8

Common difference (d)= t2-t1

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Now, sum of first 31th term (tn31) =n/2{2a+(n-1)d}

= 31/2{2×8+(31-1)4}

=31/2{16+(30×4)

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Step-by-step explanation:

Similarly use 19 as (n) for the 19th term

7 0
2 years ago
The graph of F(x) can be stretched vertically and flipped over the x axis to produce the graph of G(x) if F(x)=x^2 which of the
ladessa [460]

Answer:

g(x) = -5x²

(option B)

Step-by-step explanation:

we know that our original graph, f(x) = x² is a parabola.

So, we can consider what happens when we adjust the function/equation of a parabola.

when we "vertically stretch" a parabola, we are increasing the value of x.

 think of it this way: the steepness of a slope is rise over run. If we rise ten, and run one, that's going be a lot more steep than if we rise 1, run 1.

Let's say our x = 5

if f(x)=x²

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So, we are looking for an equation with an increase in x present.

When a parabola has been flipped over the x-axis, we know that the original equation now includes a negative

suppose that x = 1

if y = x² ; y = 1² = 1

if y = -(x²) ; y = -(1²) ; y = -1

So, when we set x to be negative, we make our y-values end up as negative also (which makes the graph look as if it has been flipped upside-down)

This means that we are looking for a function with a negative x value.

So, we are looking for a negative x-value that is multiplied by a number >1

The graph that fits our requirements is g(x) = -5x²

hope this helps!!

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1 year ago
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vfiekz [6]

Answer:

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