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Sav [38]
2 years ago
8

What is the equation of a line with slope 12 / 2 and a y-intercept of -4 ?

Mathematics
1 answer:
ValentinkaMS [17]2 years ago
6 0

Answer: y= 6x-4

Step-by-step explanation:

I wrote it in y=mx+b format. m is the slope and b is the y-intercept.

The slope is 6 because 12/2=6

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In the last two weeks of a sale, prices are reduced first by 30% and then by a further 40% of the new price . What is the final
Mandarinka [93]
15 x .30 = 4.50 discount     15-4.50= 10.50
10.50 x .40 = 4.20

Final cost of shirt  10.50-4.20 =  $6.30
5 0
3 years ago
What is the factorization of 121b^4-49
Nezavi [6.7K]

121^4-49

(11^2+7)(11^2-7) 1. 121. 49

11. × 11. 7 × 7

4 0
3 years ago
Find the next three numbers in the pattern.<br> 5, 10, 20, 40,<br> Would I add or multiply?
gavmur [86]

Answer:

firstly you know the term of multiplication

like 5*2=10 ,10*2=20, 20*2 =40 and 40*2 =80

and last three numbers are 80, 160,320

4 0
2 years ago
Read 2 more answers
4. Gloria the grasshopper is working on her hops.
aivan3 [116]

The path that Gloria follows when she jumped is a path of parabola.

The equation of the parabola  that describes the path of her jump is \mathbf{y = -\frac{5}{49}(x - 14)^2 + 20}

The given parameters are:

\mathbf{Height = 20}

\mathbf{Length = 28}

<em>Assume she starts from the origin (0,0)</em>

The midpoint would be:

\mathbf{Mid = \frac 12 \times Length}

\mathbf{Mid = \frac 12 \times 28}

\mathbf{Mid = 14}

So, the vertex of the parabola is:

\mathbf{Vertex = (Mid,Height)}

Express properly as:

\mathbf{(h,k) = (14,20)}

A point on the graph would be:

\mathbf{(x,y) = (28,0)}

The equation of a parabola is calculated using:

\mathbf{y = a(x - h)^2 + k}

Substitute \mathbf{(h,k) = (14,20)} in \mathbf{y = a(x - h)^2 + k}

\mathbf{y = a(x - 14)^2 + 20}

Substitute \mathbf{(x,y) = (28,0)} in \mathbf{y = a(x - 14)^2 + 20}

\mathbf{0 = a(28 - 14)^2 + 20}

\mathbf{0 = a(14)^2 + 20}

Collect like terms

\mathbf{a(14)^2 =- 20}

Solve for a

\mathbf{a =- \frac{20}{14^2}}

\mathbf{a =- \frac{20}{196}}

Simplify

\mathbf{a =- \frac{5}{49}}

Substitute \mathbf{a =- \frac{5}{49}} in \mathbf{y = a(x - 14)^2 + 20}

\mathbf{y = -\frac{5}{49}(x - 14)^2 + 20}

Hence, the equation of the parabola  that describes the path of her jump is \mathbf{y = -\frac{5}{49}(x - 14)^2 + 20}

See attachment for the graph

Read more about equations of parabola at:

brainly.com/question/4074088

7 0
2 years ago
Please help answer and explanation its my final
Nookie1986 [14]

Answer:

0/6 because the arrow start from zero and end at six, remember that the arrow is starting from the vertical axis.....

3 0
3 years ago
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