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Yuri [45]
2 years ago
13

Help me pls i dont understand this

Mathematics
1 answer:
vazorg [7]2 years ago
6 0

Step-by-step explanation:

Notice that:

15x = 5 * 3x and 10y = 5 * 2y.

Since there is a common factor of 5,

we can take out the factor.

=> 15x + 10y = (5)(3x) + (5)(2y) = 5(3x + 2y).

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Melissa makes 9 dollars
RideAnS [48]
Knowing she makes $9 for each 1 hour, you know that if you'd need to find how much she made after 4 hours, you would do 9(4), giving you the answer of $36.
With this knowledge, you can replace the 4 with h.

9(h)=P

The reason why it's such a simple equation is because it's per hour and nothing else is being increased, decreased, or changed.

Hope this helps!
8 0
2 years ago
Plz help
Yuliya22 [10]

Answer:

Solution: x = 2, y = -1 or (2, -1)

Step-by-step explanation:

Equation 1:  2x + y = 3

Equation 2: 5x - 2y = 12

Using the substitution method:

Transform the Equation 1 into its slope-intercept form:

2x + y = 3

2x - 2x + y = -2x + 3

y = 2x + 3

Substitute the value of y = -2x + 3 into Equation 2:

5x - 2y = 12

5x - 2(-2x + 3) = 12

5x + 4x - 6 = 12

9x - 6 = 12

9x - 6 + 6 = 12 + 6

9x = 18

9x/9 = 18/9

x = 2

Substitute the value of x = 2 into Equation 2 to solve for y:

5x - 2y = 12

5(2) - 2y = 12

10 - 2y = 12

10 - 10 - 2y = 12 - 10

-2y = 2

-2y/-2 = 2/-2

y = -1

Double-check whether the values for x and y will provide a true statement for both equations:

Equation 1:  2x + y = 3

2(2) + (-1) = 3

4 - 1 = 3

3 = 3 (True statement)

Equation 2: 5x - 2y = 12

5(2) - 2(-1) = 12

10 + 2 = 12

12 = 12 (True statement)

Therefore, the correct answers are: x = 2; y = -1 or (2, -1).

4 0
3 years ago
Wesdfrgtygfyhujkilhiuh
3241004551 [841]

Answer:

i do not know what are your talking about.

Step-by-step explanation:

what!. that's my answer.

4 0
2 years ago
a triangle has two angles that measure 47° and 67° what is the measure of the third angle in this triangle
Anna007 [38]
The answer to your math question is 66°.
Adding 47° and 67° is 114°.
Subtracting 114° from 180° equals 66°.
4 0
3 years ago
I need help on regression equations
andrezito [222]

Answer:

binder: Liquid substance used in paint and other media to bind particles of pigment together.

fresco: Where pigments are mixed with water and then applied to a plaster support, usually a wall or a ceiling.

gouache: A type of watercolor in which white pigment is added creating a duller effect, and a tinted feel.

oil: Painting medium where pigments are binded using oils, usually linseed oil.

painting media: Material made of three components; pigment,vehicle, and binder

pigment: Ground up solids that contain color the color in paint.

tempera: A water based painting medium made with egg yolk, often used to paint frescos and panels.

vehicle: Adjusts the viscosity of the paint.

watercolor: Pigment that is mixed with arabic and gum, and mostly water before it is applied to the paper.

Painting Media

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Step-by-step explanation:

8 0
3 years ago
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