i've got a few math problems so..
solve the systems by graphing:
1. y=2x+1
3x+y=6
2. 2x+6y=12
y=1/3x + 4

13:

Going from 40 to 25 is a decrease of 15.  Comparing that 15 to the starting amount of 40, we have a decrease of [tex]\dfrac{15}{40}[/tex] or 0.375 or 37.5%.  Since you need to round to the nearest whole number, that'd be a decrease of about 38%.

14.

Going from 120 to 140 is an increase of 20.  Comparing that 20 to the starting amount of 120, we have an increase of [tex]\dfrac{20}{120}[/tex] or about 0.1667 or about 16.67%.  Since you need to round to the nearest whole number, that'd be an increase of about 17%.

You always divide the amount of change by the starting value, not the ending value.

Answer: y = 1/2x + 1

Step-by-step explanation:

The formula is y = mx + b where mx is the slope (rate of change) and b is the initial value (y-int), here your rate of change is 1/2 so mx= 1/2x and your y-int(starting value) is 1 so b = 1

therefore:

y = 1/2x + 1

Answer: negative

Step-by-step explanation:

Answer: It would be a negative number because he does not have 30$. So in his bank account he would now have -1.05$. (He owes the bank)

Step-by-step explanation:

Answer: the yellow side is factors of only 24 the green one is factors they share and the blue one is factors of only 40 you can find the GCF by finding the largest number in the green area it is 8

Step-by-step explanation:

Answer:

-3.35 > -3.37

Step-by-step explanation:

-3 7/20 = -3.35

-3.35 > -3.37

The ratio (or raicios) are 2:4, 4:8, 8,16, so on and so on.

__________________________________________

The question states, vanilla cake calls for 2 cups of sugar for every 4 eggs. So basically you would add 2 every time you count to 4. Ex: 4 x 3 = 2 x 3,

4 x 6 = 2 x 6. Whatever happens to one side, has to happen to the other.

Answer: 12

Step-by-step explanation:

x = 0 when it would start so

y= 3(0) + 12

y = 12

Basically, the initial value.

Answer:

The value of length QT is: 12m

Step-by-step explanation:

QT = 12m

I don't have an explanation but I've done this problem sorry!

Answer: the rate of change is 1/2

Step-by-step explanation:

The formula for slope is y2 - y1/ x2 - x1

I picked points (2,2) (x1 & y1) and (6,4) (x2 & y2)

4 - 2 = 2

6 - 2 = 4

2/4 is the rate of change, and 1/2 is 2/4 simplified

Answer: 2^3×3×7 as Prime Factorization

Answer:

its the 3rd answer 5/9, and 75/135

Step-by-step explanation:

its ez

Answer:

C. or the 3rd one

Step-by-step explanation:

25/45 simplifies to 5/9 and 75/135 simplifies to 5/9

Answer:

1. 2x-1=21/3

2x-1=7

2x=7+1

2x=8

X=8/2

X=4

2. 100/8=4t-5

12.5 =4t-5

12.5+5 =4t

16.5 =4t

16.5/4 =t

4.1=t

Answer:

2(8s + 1)

Step-by-step explanation:

12s + 4 +4s – 2

= 12s + 4s +4 – 2

= 16s + 2

factorise

= 2(8s + 1)

Answer: c

Step-by-step explanation:

negative 3 fourths

it slopes upward to the left o you know it is negative, and it cannot be a top heavy fraction

Answer: 0.27, 1/3, 1 1/4, 1.35

Step-by-step explanation:

Answer:

D. 0.27. 1/3. 1 1/4. 1.35

Step-by-step explanation:

1/3 = 0.3

1 1/4 = 1.25

1. 0.27

2. 0.3 or 1/3

3. 1.25 or 1 1/4

4. 1.35

Answer: 1/2, 0.51, 11/20

Step-by-step explanation:

Use 100 as a common denominator so you can compare all the numbers in like terms:

1/2 = 50/100

0.51 = 51/100

11/20 = 55/100

Answer:

[tex]\frac{1}{2} 0.51, \frac{11}{20}[/tex]

Step-by-step explanation:

First, you want to change the decimal into a fraction.  0.51= [tex]\frac{51}{100}[/tex]

Then, find the common denominator.  In my example, I used 100.  Find the equivalent fraction for the fractions with 100 as their denominator

[tex]\frac{11}{20} = \frac{55}{100} \\\\\ \frac{1}{2} = \frac{50}{100}[/tex]

Next, line them up in order of their numerators

[tex]\frac{50}{100} \frac{51}{100} \frac{55}{100}[/tex]

Finally, match the new fraction with their reduced fraction or decimal:

[tex]\frac{1}{2} = \frac{50}{100} \\\\0.51 = \frac{51}{100} \\\\\frac{11}{20} = \frac{55}{100}[/tex]

Answer:

Hope you can understand this .

Please give me Brainliest.....

Answer:

15 is 1% of 1500

Step-by-step explanation:

Answer: nhi do you ave any pictures that i coulkd see to help sovle this problem

Step-by-step explanation:

Answer:

It has zero solutions since its a contradiction

Answer:

No Solution

Step-by-step explanation:

1/2x+6=1/4(2x-24)

Distribute numbers in parenthesis

1/2x+6=1/2x-6

When you try to move both of the x's to the same side, you are left with 0x

6≠-6

Therefore no solution

Answer:

$20.57

Step-by-step explanation:

First you have to find how many hours he/she works per week (38) and how many weeks he/she works a year (50) and how much he/she makes a year (39,095)

Now in order to find this we have two ways I will use the simpler way so it makes it easier to write and tell to you're teacher :)

First you multiply 50 and 38

50 × 38 = 1900

Since you know how much he/she makes a year you just divide.

39,095 ÷ 1900 = 20.57

So that makes your answer 20.57, Hope this helps and if it did and if I deserve it pls give brainlyest thank you :)

a) The step where Mardie first made an error is given as follows: Step 1, as the negative sign means that the sign of each term inside the parenthesis should be changed.

b) The correct expression is given as follows: -8.6b + 28.

The expression in the context of this problem is defined as follows:

(-3.78b + 12) - (4.82b - 16).

The negative sign before the parenthesis means that the sign of each term inside the parenthesis is changed, hence:

-3.78b + 12 - 4.82b + 16.

This is the step where Maddie made the first error.

Then, to simplify the expression, we combine the like terms, as follows:

b(-3.78 - 4.82) + 12 + 16 = -8.6b + 28.

More can be learned about simplification of expressions at https://brainly.com/question/723406

#SPJ1

Answer:

A

Step-by-step explanation:

Because it looks right to me