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IRINA_888 [86]
3 years ago
15

Write an expression to represent the sum of three times the square of a number and -7.

Mathematics
1 answer:
Ratling [72]3 years ago
3 0

Answer:

C: -7

Step-by-step explanation:

In 3x^2-7, 3 is the coefficient, x is the variable, and -7 is the constant.

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here's a graph of a linear function. write the equation that describes that function. express it in slope intercept form. HELP!
IRISSAK [1]

Answer:

y=\frac{3}{4}x+2

Step-by-step explanation:

So when you express a linear function in slope-intercept form it's given in the form of y=mx+b, where m is the slope, and b is the y-intercept. This is because as x increases by 1, the y-value will increase by m (because multiplication), and since the slope is defined as rise/run, the rise will be m, and run will be 1, giving you a slope of m/1 or m. The reason b is the y-intercept, is because whenever the linear function crosses the y-axis, the x-value will always be 0. Meaning that mx will be 0 because m * 0 will equal 0... and that leaves b by it self, so b will determine the y-intercept.

So if you look at the graph, the linear function crosses the y-axis as (0, 2) so the value of b will be 2. This gives you the equation y=mx+2.

Now to calculate the slope, we can take any two points and see how much the rise was and how much the run was. It can also be more formally defined in the equation: y=\frac{y_2-y_1}{x_2-x_1}. So let's take the points (0, 2) and (8, 8). As you can see the x-value increases by 8 or "ran" by 8, and the y-value increased by 6. So the rise over run in this case is 6/8 which can simplified as 3/4. That is the slope. This gives you the complete equation of: y=\frac{3}{4}x+2

6 0
1 year ago
What is this 4³ - 30 ➗ 2
svlad2 [7]

Step-by-step explanation:

answer= 8

I hope it's help uhh

5 0
2 years ago
Read 2 more answers
How many lines of symmetry does a triangle have?
lora16 [44]
It has three lines of symmetry.
5 0
2 years ago
Maria and jane bought a whole pizza pie. marie ate 1/5 of the pie and jane ate 1/4 of the pie. write a number sentence to find o
Papessa [141]
Eleven Twentieths of the pie are left, so that's 11/20

Method to solve; 
Since its given a 1/4 and a 1/5 it's easiest to convert these to twentieths (the lowest common multiple of 4 and 5)
So 1/4= 5/20
      1/5 = 4/20
How much is eaten = 5/20 + 4/20 = 9/20
How much remains = Total (20/20) - How much eaten (9/20) = 11/20
8 0
3 years ago
The volume of a rectangular prism is 36 cubic feet. Select three choices which could be the dimensions of the prism.
GaryK [48]

Answer:

Well we don't have the choices to choose from so I will just list some

36x1x1

18x2x1

3x6x2

3x3x4

2x2x9

6x6x1

3x12x1

Step-by-step explanation:

anything that multiples together to get 36

Hope this helps if you need more let me know! :)

1x factors of 36

1x1x36

1x2x18

1x3x12

1x4x9

1x6x6

2X factors of 18

2x1x18

2x2x9

2x3x6

3 times factors of 12

3x1x12

3x2x6

3x3x4

4 times factors of 9

4x1x9

4x3x3

6 times factors of 6

6x1x6

6x2x3

there are some repeats but that should be most of the choices

4 0
2 years ago
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