Answer:
x=−5/4y+−15/2
Step-by-step explanation:
Step 1: Add -5y to both sides.
4x+5y+−5y=−30+−5y
4x=−5y−30
Step 2: Divide both sides by 4.
4x/4=−5y−30/4
x=−5/4y+−15/2
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They are vertical angles so you need to make the following equal
7y=5y+36 and 3x-21=2x+4
Solve for y and then x
7y=5y+36
Subtract 5y on both sides to get
2y=36
Then divide by 2 on both sides to Get y=18
For 3x-21=2x+4,
Subtract 2x on both sides to obtain
x-21=4
Then add 21 to both sides to get
x=25
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Answer:
a=100 sq. cm.
Step-by-step explanation:
a= l×w
a=10×10
a=100
Answer:
z score = .2843
Step-by-step explanation:
25 is 2 below 27
this is 2/3.5 = .5714 S.D. below mean
z-score . 2843
Answer:
26
Step-by-step explanation:
Let x be the first even integer
x+2 is the second even integer
x+4 is the third even integer
The sum of three consecutive even integers is 84
x+ (x+2) + (x+4) =84
Combine like terms
3x +6 = 84
Subtract 6 from each side
3x+6-6 =84-6
3x =78
Divide each side by 3
3x/3 = 78/3
x =26
The three integers are 26, 28,30
The smallest is 26
