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galina1969 [7]
3 years ago
10

Need help plz very difficult

Mathematics
1 answer:
Oksanka [162]3 years ago
6 0

Answer:

D - 9x^(2)+2x-5

Step-by-step explanation:

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Look at the graph shown<br> Which equation best represents the line?
Brilliant_brown [7]

y=\frac{11}{4}x +4 is the equation best represents the line.

Solution:

Take any two points on the line.

Let the points be (0, –4) and (4, 7).

x_1=0,y_1=-4,x_2=4, y_2=7

General form of equation of a line is y = mx + c

where m is the slope and c is the y-intercept of the line.

<em>y-intercept is the point which line crosses at y-axis.</em>

In the given line, y-intercept is 4.

c = 4

Slope of the line:

$m=\frac{y_2-y_1}{x_2-x_1}

$m=\frac{7-(-4)}{4-0}

$m=\frac{11}{4}

Equation of the line:

y = mx + c

y=\frac{11}{4}x +4

Hence y=\frac{11}{4}x +4 is the equation best represents the line.

5 0
3 years ago
A scale drawing of a building is one foot to 1/4 inch what is the actual length of the building if the scale drawing shows that
abruzzese [7]
The length is 54 ft because 13.5 in. is equal to .25*54 so 1*54 would be your answer in feet.
3 0
3 years ago
Which input in this table is incorrect?
Elenna [48]

Answer:

A) 10.00

Step-by-step explanation:

10.00 x 0.8 is equal to 8 giving a total of 18.00. But it is incorrectly done  in the table.

6 0
2 years ago
Becky needs to choose a new cell phone plan. She has 2 choices. Carolina Cell offers a monthly fee of $20.79 and $2.00 for each
Paladinen [302]

Answer:

4.2 gigabytes

Step-by-step explanation:

To find the answer, you need to write an equation where the cost of Carolina Cell is equal to the cost of Sanford Cell:

20.79+2x=22.89+1.50x, where x is the number of gigabytes used.

Now, you can solve for x:

2x+1.50x=22.89-20.79

0.5x=2.1

x=2.1/0.5

x=4.2

According to this, the answer is that both plans would cost the same  when 4.2 gigabytes are used.

7 0
3 years ago
Find the selling price of a $450 painting with a 45% markup
Harman [31]
The answer would be $45
7 0
3 years ago
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