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disa [49]
3 years ago
5

3( 2x + 6) = -6 7th Grade Linear Equations

Mathematics
1 answer:
Tanya [424]3 years ago
4 0

Answer:

X= -4

Step-by-step explanation:

6x + 18 = -6

6x= -24

x= -4

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A frog hops 1 1/2 inches and then another 1 1/4 inches. How far has it hopped altogether?
LenKa [72]

Answer:

Add

11 over 2

11  2  + 11 over 4   11  4 = 33 over 4  33  4

Step 1 of 2: Add. Show the work

Step 2 of 2: Simplify.

Simplify

33 over 4  33  4   = 8 and 1 over 48

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4

Step-by-step explanation:

6 0
3 years ago
Hurry Quick, help me do this problem. I don't understand how to do this so please help! (Problem in photo)
matrenka [14]

Answer:

1) The system of equations is 5x+4y=75 and x+y=18

2) The first number is 3 and the second number is 15

Step-by-step explanation:

1) Let be "x" the first number and "y" the second number.

Remember that:

a- The word "times" indicates multiplication.

b- A sum is the result of an addition.

c- "Is" indicates this sign:  =

Then, the sum of 5 times "x" and 4 times "y" is 75, can written as:

5x+4y=75

And "The sum of the two numbers is 18" can written as:

x+y=18

Therefore, the System of equations is:

\left \{ {{5x+4y=75} \atop {x+y=18}} \right.

2) You can use the Elimination Method to solve it:

- Multiply the second equation by -5, add the equations and then solve for "y":

\left \{ {{5x+4y=75} \atop {-5x-5y=-90}} \right.\\......................\\-y=-15\\\\y=15

- Substitute the value of "y" into any original equation and solve for "x":

x+15=18\\\\x=18-15\\\\x=3

7 0
3 years ago
A sheet of paper has a perimeter of 39 in. if the width of the paper is 8.5 in . what is the length of the sheet of paper
Valentin [98]
If the perimeter is 39 what you have to do is 39 - 8.5 - 8.5 that will give you 22 and divide 22/2 and that gives you 11. So 11 is the length
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Step-by-step explanation:ujjj

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3 years ago
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ipn [44]

Answer:

Cap, purse, and dress

Step-by-step explanation:

235+490+95= 820

Hope that helps :D

<u><em>-Jazz</em></u>

4 0
3 years ago
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