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Licemer1 [7]
3 years ago
13

-5(x+2y)+15(x+2y);x7and y=-7

Mathematics
1 answer:
Nat2105 [25]3 years ago
6 0
I believe your answer should be 105x squared-1475x+70
sorry i'm not really sure how to put the little two above the first x but my answer is mathematically correct.
You might be interested in
Sean has some candy bars that he wants to give away. He is going to give each person 1/18 of a bar, and he has 2 3/4 to give awa
julsineya [31]

Answer:

49 people

Step-by-step explanation:

Take the amount of candy and divide by the amount in a serving

2 3/4 ÷ 1/18

Change to an improper fraction

(4*2+3)/4 ÷ 1 /18

11/4 ÷ 1/18

Copy dot flip

11/4 * 18/1

198/4

49.5

Round down since people do not want half a serving

49 people

8 0
4 years ago
A town population of children increased from 367 to 421 during the past year which equation showes how to find the percentage in
klemol [59]

Answer:

5.7%

Step-by-step explanation:

421-367=24

24/421x100=5.7%

6 0
2 years ago
A boy 1.6 m tall casts a 2.4 m shadow. How tall is a nearby streetlight that casts a 7.2 m shadow?
Oxana [17]
You basically need to set up a porporion:
1.6/2.4 = x/7.2
x=4.8
8 0
3 years ago
Which expression have the same value as the product of 2.7 and 4
Maurinko [17]

Answer:

Step-by-step explanation:

2.7*4=10.80

27*0.4=10.80 we multiplied 27 by 10 but divide 4 by 10

0.27*40=10.80

3 0
3 years ago
I have to write the definitions of all of these math terms, can you help me?
EastWind [94]

Answer:

Solution of an Equation in Two Variables - Generally, a two-variable system solution is an ordered pair that makes BOTH equations valid.

Graph of an Equation in Two Variables - In the Ax + By = C form, linear equations with two variables will appear, and the resulting graph is always a straight line.

Linear Equation - Any equation that can be written in shape is a linear equation. Ax+b=0, 0.0 Where the real numbers are a and b, and x is a vector.

Linear Function - Those whose graph is a straight line are linear functions. The following form has a linear function. F(x) = y = a + bx.

I can't add a drawing right now, but I help these help!!

3 0
3 years ago
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