Answer:
x=24/7
Step-by-step explanation:
3(x+2)+4(x-5)=10
3x+6+4x-20=10
7x-14=10
7x=10+14
7x=24
x=24/7
First you have to change your equation to slope-intercept form.Make everything equal to y, do y=-(4x/3)+(8/3). Parallel lines means that slope is the same. In this case, your equation will have the slope m=4/3. Then you would plug in your given point into y=(4x/3)x+b, so it would like -2=(4(4)/3)+b. Solve for "b," and plug into this equation: y=(4x/3)+b. That would your final answer.
Answer:
8 meters
Step-by-step explanation:
Not to be confused with decameters, a decimeter is 1/10 of a meter. 80÷10=8.
103^2-102^2
The property that applies here is a^2-b^2 = (a+b)(a-b)
so the answer is 103^2-102^2=(102+103)*(103-102)= numerically it is 205( as 103+102 = 205 and 103-102 = 1.....so 205*1 = 205)
The thing is that usually the factorization ends at (102+103)(102-103) ......
The expression which shows the amount of money, in dollars Maddie spent on mailing letters in March is 3.7 +0.74 y.
Given Maddie mailed y letters in January. She mailed 3 times as many letters in February. In March she mailed 10 letters more than half of what she mailed in January and February.
Expression is combination of numbers, symbols, fraction, coefficients which are not found in equal to form.
Letters mailed in January=y
Letters mailed in February=3y
Letters mailed in March=10+(y+3y)/2
=10+2y
Amount of mailing of 1 letter=$0.37.
Amount of mailing of letters in March=0.37(10+2y)
=3.7+0.37*2y
=3.7+0.74y
Hence the expression which shows the amount of letters mailed in March is 3.7+0.74 y.
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