Answer:
b: 5ft
Step-by-step explanation:
The third angle is 60 degrees. A triangle has 180 degrees so 180-30-90=60
So a 3 foot cable is10.25
a 6foot cable is 15.50
so
x=cost per foot
y=cost of special connectors
3x+y=10.25
6x+y=15.50
make first equation negative and add to the first
3x=5.25
divide both sides by 3
1.75=x
so it costs 1.75 for a foot of cable
subtitue into first equation
3(1.75)+y=10.25
5.25+y=10.25
subtract 5.25 from both sides
y=5 dollars=cost of special so
4x+y=4(1.75)+5=7+5=$12
so the cost of a 4 foot cable is $12
Step-by-step explanation:
-70x^4 + 30x
= 10x(-7x^3 + 3)
ANSWER: 10x(-7x^3 + 3)
Answer:
A, B , C do NOT use appropriate compatible numbers to estimate the total number of hours he worked.
Step-by-step explanation:
Malik earned $2,344.55
Wages per hour $ 35.50
No of hours = Total wages / wages per hour= $2,344.55/ 35.50 = 66.043
<em>Lets analyze all the options</em>
A. 2,400 ÷ 30= 80
B. 2,400 ÷ 40= 60
C. 2,000 ÷ 40= 50
D. 2,000 ÷ 30= 66.67
A, B , C do NOT use appropriate compatible numbers to estimate the total number of hours he worked.
<u><em>Only D uses appropriate compatible numbers to estimate the total number of hours he worked.</em></u>
