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Elza [17]
3 years ago
10

Help plz its confusing

Mathematics
2 answers:
mina [271]3 years ago
6 0
For the dragging out the two with x variables next to each other, the two with y variables together, and the one with no variables together.

simplified answer would be:
9x - 5x + 7y - 4y + 10 - 8
4x + 3y + 2
DedPeter [7]3 years ago
4 0
Nothing ;) Bc i don’t know hahahaha banana
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3 years ago
Complete the missing value in the solution to the equation:<br> 7 + 5x = =3(y-2)<br> ( ,5)
mafiozo [28]

Answer:

x = 2/5

Step-by-step explanation:

Given:

7 + 5x = 3(y-2)

Rearrange this equation such that x is expressed in terms of y

7 + 5x = 3(y-2)   (expand right side)

7 + 5x = y(3)-2(3)

7 + 5x = 3y-6   (subtract 7 from both sides)

5x = 3y - 6 - 7

5x = 3y - 13

we are given the y-value of the coordinate pair (? , 5)

simply substitute y=5 into the equation above

5x = 3y - 13

5x = 3(5) - 13

5x = 15 - 13

5x = 2   (divide both sides 5)

x = 2/5

7 0
2 years ago
A skateboard ramp is 40 feet long and rises from the ground at an angle of 33 degrees. How tall is the ramp?
olga_2 [115]

Answer:

The ramp is 21.8 ft tall.

Step-by-step explanation:

If you convert this into a triangle, 40 ft is the hypotenuse, 33° is the angle next to the right angle (on the horizontal line) and we need to find how tall the ramp is, which will be x. It is very helpful to draw a picture.

We will use the sine ratio because, starting from the given degree of 33, we have the hypotenuse value and need to find the value opposite the degree:

sine=\frac{opposite}{hypotenuse}

Insert values:

sin33=\frac{x}{40}

Multiply 40 to both sides to isolate the variable:

40(sin33)=40(\frac{x}{40})\\\\40*sin33=x\\\\x=40*sin33

Insert the value of x into a calculator:

x=21.7855614

Round if necessary:

x=21.8 ft

Done.

6 0
3 years ago
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