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ziro4ka [17]
2 years ago
9

!!!!!!!!!!!!~~math is hard i could use some help i also raised the points and will mark brainliest uwu ~~!!!!!!!!!!!!!!

Mathematics
1 answer:
elena-s [515]2 years ago
7 0

I think (jk) (x) means j times k

(jk) (x) = -7x(9 - 2x) //Using Distributive Property.

(jk) (x) = -63x + 14x^2 = 14x^2 - 63

//Hope it helps.

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Carly and janiya put some money into their money boxes every week. the amounts of money (y), in dollars, in their money boxes af
Lelu [443]
Carly : y = 60x + 40
janiya : y = 50x + 80

60x + 40 = 50x + 80
60x - 50x = 80 - 40
10x = 40
x = 40/10
x = 4 <=== so at 4 weeks, they will have the same amount of money <==
The money they have is : y = 60(4) + 40.....y = $ 280 <=

so ur answer is : 4 weeks, $ 280
8 0
3 years ago
How to round 0.195121951 to the nearest hundredth of a percent
tigry1 [53]

Answer:

You have to look at the second number in the decimal place and round the number to the right of it. 0.20

5 0
3 years ago
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Find the equation of the line that is parallel to the line x + 5y = 10 and passes through the point (1,3).
Nataliya [291]

Answer:

Step-by-step explanation:

for two lines to be parallel they MUST have the same slope but have different Y intercepts ( Y axis crossing values)

parallel lines will never intersect each other

first I use a graphing calcuator to solve the problem

I like to use y intercept form better, but you don't have use it

I will try to solve it directly without going through the y intercept equation

x + 5y = 10    in y intercept form y = mx + b is

5y = -x + 10     divide both sides by 5

y = -x/5 + 10/5    

y = -x/5 + 2

Now I need to find a parallel line that passes through the x =1 and y = 3 point recall this line will have the same slope =     m = -1/5

and a different Y axis crossing point 'b' that we don't know

y = -x/5 + b      y = 3 when x = 1 so slove for 'b'

3 = -1/5 + b

3 = -0.2 + b    add -0.2 to both sides

3.2 = b

y = -x/5 + 3.2     this is answer in y intercept form

                          if you multiply both sides by 5

5y = -x + 16        add x to both sides

x + 5y = 16         answer in standard form

THE EASIER WAY TO SOLVE THE PROBLEM IS ......

x + 5y = 10      find a line parallel that passes through x  = 1,  y = 3  

x + 5y = Z       Z is an unknown value  plug in x and y and solve for Z

1 + 5(3) = Z

Z = 16              so the parallel line in standard form is

x + 5y = 16    

same as before,  my y intercept method was correct, but not  worth the effort

       

6 0
3 years ago
Solve;<br><br> 5(x+1)=6.4−2.7x<br><br> 3(y−1.5)=9.9–4.2y<br><br> 0.9y−1.8=0.3(y−4)
Dmitrij [34]
—
1. Answer x=0.18

2. Answer y = 2

3. Answer y = 1
7 0
3 years ago
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Doss [256]

Answer:

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Step-by-step explanation:

Acute angles are angles that are less than 90°.

0° < θ < 90°.

So by looking at the diagram, any angles that are smaller than a L-shaped(90°) are all acute angle.

5 0
3 years ago
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