80 weeks
1,200+40x=400+50x
800+40x=50x
800=10x
x=80
Answer:
Step-by-step explanation:
Use trigonometry
<u>Let the height of the cloud be x, then we have:</u>
- tan 35° = x/525
- x = 525 tan 35°
- x = 367.6 (rounded)
The height of the cloud layer is 367.6 m
Practice proportionality. A 50 difference between 100 and 150 is less relevant than 50 in 25 and 75. Its like you have 1 billion dollars and i give you 10 dollars. Its worthless right? What if you have 20 dollars and i give you again 10 dollars, its half of what you have. See the difference? Same number but different value.
Answer:
8x+7
Step-by-step explanation:
The equations are listed below
What is an equation?
An equation is a formula in mathematics that expresses the equivalence of two expressions by linking them with the equals symbol =. The word equation and its cognates in various languages may have somewhat different definitions; for example, in French, an équation is defined as including one or more variables, but in English, an equation is any well-formed formula consisting of two expressions linked by an equals sign.
The system of equations are:
9x + 11y + 12.50z = 243
x + y + z = 23
z = 2y
x = 11 shirts
y = 4 shirts
z = 8 shirts
To learn more about equations, click on the link
brainly.com/question/28196676
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