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Leviafan [203]
3 years ago
7

BRAINLIEST........................

Mathematics
1 answer:
kupik [55]3 years ago
4 0
First plot the y-intercept.

The equation is in the form: y = mx + b where b is the y-intercept. So when x = 0, y = -5.

(0, -5)

Then choose any other x value to obtain the y value of that coordinate. For example, plug x = 2 in the equation.

y = -1/2x - 5
y = -1/2(2) - 5
y = -6

So a second point can be:

(2, -6)

Plotting these two points should make a linear graph as desired. I attached a picture of where the two points should be as reference.

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Find -3a2 - b3 + 3c2 - 2b3 if a = 2, b = -1, and c = 3
Studentka2010 [4]
If you would like to solve - 3 * a^2 - b^3 + 3 * c^2 - 2 * b^3, if a = 2, b = -1, c = 3, you can calculate this using the following steps:

a = 2, b = -1, c = 3
- 3 * a^2 - b^3 + 3 * c^2 - 2 * b^3 = - 3 * 2^2 - (-1)^3 + 3 * 3^2 - 2 * (-1)^3 = - 3 * 4 - (-1) + 3 * 9 - 2 * (-1) = - 12 + 1 + 27 + 2 = 18

The correct result would be 18.

6 0
3 years ago
Read 2 more answers
What is the VOLUME and SURFACE AREA of a cube with 14 cm in length?
vfiekz [6]
Volume of the cube = a³ = (14cm)³= 2744 cm³

To find surface are, we need to find at first area of the face
A(face)=14² cm².
Cube has 6 congruent squares, so 
Surface area of the cube = 6*14² cm²= 1176 cm²
3 0
3 years ago
Mhanifa please help! Look at the picture attached!!!
inessss [21]

Answer:

(17)

Sum of interior angles of a quadrilateral is 360°

  • 110° + 130° + x + x - 3° = 360°
  • 2x = 360° - 237°
  • 2x = 123°
  • x = 61.5°

(18)

Sum of interior angles of a hexagon is 180°*(6 - 2) = 720°

  • 2*90° + 2x + 2(x + 22°) = 720°
  • 90° + x + x + 22° = 360°
  • 2x = 360° - 112°
  • 2x = 248°
  • x = 124°

(19)

Interior angles of a given pentagon are all marked as congruent, so the exterior angles are congruent too.

Sum of exterior angles is 360°.

  • x = 360°/5
  • x = 72°
8 0
2 years ago
Timothy wants to estimate the mean number of siblings for each student in his school. He records the number of siblings for each
Ede4ka [16]

Answer:

(A) the specific number of siblings for each randomly selected student

Step-by-step explanation:

First Timothy wants to estimate the mean number of siblings for each student in his school

So he selected a random sample of 75 students, then recorded the number of siblings they have

He later find the mean.

You can see the mean was obtained from the selected group not all students in the school hence option D and E are not correct.

Option A clearly indicates a mean was obtained for the siblings that were from the randomly selected students.

4 0
3 years ago
When you add 18 to 1/4 of a number, you get the number itself.
Lerok [7]
So if 18 plus 1/4 of the number is the number the means 18 is 3/4 of the number so 18 divided by 3 is 6 so 1/4 = 6 now add 6 to 18 to get 4/4 of the number which is 24 number = 24
8 0
3 years ago
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