MATHEMATICS HIGH SCHOOL

System of equations,

3x - 6y =2

5x + 4y = 1

Answers

Answer 1
Answer: 3x-6y=2 (label equation 1)
5x+4y=1 (label equation 2)
-6y=-3x+2 (rearranged equation 1)
y=1/2x-1/3 (label equation 3)
 substitute equation 3 into equation 2 
5x+4(1/2x-1/3)=1
5x+2x-4/3=1
15x+6x-4=3 (multiplied everything by 3)

21x-4=3
     +4  +4
21x=7
x= 7/21
x=1/3
sub x=7/21 into equation 3
y= 1/2(1/3) -1/3
y= -1/6


Therefore x=1/3 and y= -1/6

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F(x) = 12x - 3x + 12Find f(10x - 5)
How to write two hundred twenty five million,sixty thousand in number form

Write an equivalent expression for n x a using only addition

Answers

n*x*a=n+x+a

If n=1, x=2 and a=3.
n+a+x=x+a+n

90=90✅


n=15
x=20
a=55

Suppose a city with population 500,000 has been growing at a rate of 7% per year. If this rate continues, find the population of this city in 11 years.

Answers

use compound interest formula.........m

2 + 31 x 1/10 + 14 x 1/100 or 2.324 which is bigger

Answers

Answer:

Step-by-step explanation:

2 + 31 x 1/10 + 14 x 1/100

= 2 + 31/10 + 14/100

= 200/100 + 310/100 + 14/100

=524/100

=5.24 > 2.324

The width of a rectangle is 12 cm less than the length. The perimeter is 156 cm. Find the width and length.

Answers

w-the\ width\nl-the\ length\n\nw=l-12\n\nthe\ perimeter\ of\ rectangle:P=2(w+l)\ and\ P=156cm\n\n2(w+l)=156\to\ put\ w=l-12\ to\ equation:\n\n2(l-12+l)=156\n2(2l-12)=156\ \ \ \ |divide\ both\ sides\ by\ 2\n2l-12=78\ \ \ \ \ |add\ 12\ to\ both\ sides\n2l=90\ \ \ \ \ |divide\ both\ sides\ by\ 2\nl=45\n\nw=45-12=33\n\nSolution:the\ width\ equal\ 33cm\ and\ the\ length\ equal\ 45cm.

What is the slope-intercept form of an equation?
pls help me thanks

Answers

Answer:

It is the number before x.

Step-by-step explanation:

An example would be if some said to find the slope intercept form of 5/6x+3 the slope intercept form would be 5/6.

What multiplies to get -80 but adds to get 2

Answers

so find the factors of 80 that are opposites and are 2 in differnece

the positive number must be greater

factors of 80
4,20
5,32
8,10

8 and 10 are 2 away from each other
make 8 negative

-8 and 10 are the nujmbers
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