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3 years ago

Please help me!! ill mark you brainliest. please actually answer all of em.

Mathematics

2 answers:

Lostsunrise [7]3 years ago

5 0

Answer:

1-a

2-a

3-b

Step-by-step explanation:

hope that helps

Dmitriy789 [7]3 years ago

4 0

A
A
B

................

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Use the distributive property and combining like terms to solve the following equation for mm.

tangare [24]

Answer:

there are no solutions to m

Step-by-step explanation:

$- 2(m + 4) - 9 = \\ 5 - 2(m + 4) - 9 = 5$

$- 2m - 8 - 9 = 5 - 2m - 8 - 9 = 5$

$- 2m - 17 = - 2m + 5 - 8 - 9 = 5$

$- 2m - 17 = - 2m - 3 - 9 = 5$

$- 2m - 17 = - 2m - 12 = 5$

$- 2m = - 2m + 5 = 5$

$- 2m = - 2m + 5 = 5 \\ - 2m = - 2m = 0 \\ - 2m = m = 0 \\ - 2(0) = 0 \\ 0 = 0$

check

$- 2(0 + 4) - 9 = 5 \\ - 2(0 + 4) - 9 = 5 \\ \\ 0 - 8 - 9 = 5 \\ 0 - 8 - 9 = 5 \\ - 17 = 5 \\ there \: are \: no \: solutions$

4 0

3 years ago

Pleaseee answer I realllyyy neeedddd helpppll

Gnom [1K]

Answer:

x is the independent variable

y is the dependant variable

-3 is the rate of change (otherwise known as gradient or slope)

-7 is the initial value

Step-by-step explanation:

The dependant variable is the variable which is determined by the value of the independent variable;

So, if we say x = 1, then the value of y is as follows, y = -3(1)-7 = -10;

The independent variable is (practically) always the x-values and the dependant variable is (practically) always the y-values.

Conventionally, the independent variable, on a graph, is on the x-axis and the dependant variable is on the y-axis.

The rate of change/gradient, in the case of line equations, is simply the coefficient of x, which is just the number that appears before "x" in the equation, i.e. -3.

The initial value is found simply by setting x = 0, and calculating the value of y;

This will always be the number in the equation that is not the coefficient of x, i.e. the number added or subtracted in the equation, -7 in this case.

5 0

3 years ago

A book has 150 pages and you read 3 pages per day.after a certain number of days,there are 60 pages left.write an equation to sh

kotegsom [21]

3x+60=150 can be used to determine the number of days you read. Solving the equation determines that you have been reading for 30 days.

Step-by-step explanation:

Total pages = 150

Pages per days = 3

Pages left to read = 60

Let,

x be the number of days.

According to given statement;

Total pages = Pages per day*number of days + Pages left to read

$150=3x+60\\150-60=3x\\90=3x\\3x=90\\$

Dividing both sides by 3

$\frac{3x}{3}=\frac{90}{3}\\x=30$

3x+60=150 can be used to determine the number of days you read. Solving the equation determines that you have been reading for 30 days.

Keywords: linear expression, division

Learn more about linear expression at:

#LearnwithBrainly

7 0

3 years ago

-1/4x – 2/3x = -6 + 28

77julia77 [94]

Answer:

x= -24

Step-by-step explanation:

-1/4x-2/3x= -6+28

add -6 to 28 but since 6 is a negative its subtraction

-1/4x-2/3x=22

multiply all by 12

-3x-8x=264

add -3x to -8x

-11x=264

divide both sides by -11

x= -24

3 0

3 years ago

Five sandwich rings are each cut into four pieces you then cut each of the pieces into three servings how many servings do you h

anastassius [24]

You would have 48 servings

8 0

4 years ago