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3 years ago

1. -2x = 12

Mathematics

2 answers:

Rainbow [258]3 years ago

8 0

1. X=-6
2. X=-5
3. X=-1.3
4. X=-2.5
5. X=4
6.x=3
7.x=-3
8.x=3

andrew11 [14]3 years ago

6 0

hope it will help u.if my ans is helpful to u,u can start following me.

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The expression 20a + 13c is the cost (in dollars) for adults and students to enter a science center. Find the total cost for 4 a

lapo4ka [179]

Answer:

$392

Step-by-step explanation:

Given the expression :

Total cost = 20a + 13c

a = adult

c = student

The total cost for 4 adults and 24 students

a = 4 ; c = 24

Total cost :

20(4) + 13(24)

80 + 312

= $392

3 0

3 years ago

Easy Multiple Choice Questions about expressions and linear equations / ASAP / Will mark brainliest / 25 Points

nata0808 [166]

Answer:

1.C

2.A

3.D

4.C

5.B

6.A

7.B

8.C

9.A

10. D

Step-by-step explanation:

For Problem 1, the work is as follows:

$2(3x-1)+x\\Distribute\\6x-2+x\\7x-2$

For Problem 2, the work is as follows:

$(3x^{2} +6x+4) - (-x^{2} +2x-1)\\Distribute -\\(3x^{2} +6x+4) + (x^{2} -2x+1)\\Combine\\4x^{2} +4x+5$

For Problem 3, the work is as follows:

$5b-(a+c)^{2} \\5(3) - (-1+-4)^{2} \\15 - (-5)^{2} \\15-25\\-10$

For Problem 4, the work is as follows:

$4x-8 = -12\\+8\\4x = -4\\-4/4 = -1\\x = -1$

For Problem 5, the work is as follows:

$\frac{1}{2} (12x-6) = 2x-15\\Distribute\\\\6x - 3 = 2x -15\\+3\\6x = 2x -12\\-2x\\4x = -12\\-12/4\\x = -3$

For Problem 6, the work is as follows:

$17 *0.06 = 1.02\\17+1.02 = 18.02$

For Problem 7, the work is as follows:

$x = (2,0)\\y = (0,-1)\\\frac{rise}{run} \\y = \frac{1}{2} x-1$

For Problem 8, the work is as follows:

$y_{2} -y_{1} \\x_{2} -x_{1} \\-1-1 = -2\\0-(-2) = 2\\Slope = -1$

For Problem 9, the work is as follows:

$3y - 2x +6 = 0\\-3y\\(-3y - -2x+6)/-3\\y = \frac{2}{3} x -2$

For Problem 10, the work is as follows:

$(y-3) = -2(x-1)\\Distribute\\(y-3) = -2x+2\\+3\\y = -2x +5$

Hope this Helps!

4 0

2 years ago

I need help! Please! Geometry! I don't know what I'm doing!

Ber [7]

Hi! collinear means on the same line, while coplanar means on the same plane! here’s what i got for these questions:

2 - false

4 - i’m not too sure on this one, but i believe it’s true!

6 - false

7 - true

try to check the answers and make sure they’re true before submitting! hope this helped!:)

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2 years ago

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aliina [53]

Answer:

find the perpendicular of the angle of pole

7 0

2 years ago

3. The scale of a model car is 1:32.

Jlenok [28]

Answer: The answer would be 73.6

Step-by-step explanation: We have to 32x2.3 to get 73.6.

Hope this helps!

3 0

3 years ago

Read 2 more answers