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madam [21]
3 years ago
8

Does anyone know how to do this

Mathematics
2 answers:
zhenek [66]3 years ago
6 0
Tom's age: x 
Maria is twice as old as Tom sober age is 2x 

2x+x=30

3x=30

x=10 

Tom is 10 years old and Maria is 20 years old.
Julli [10]3 years ago
5 0
Maria = x
Tom = y

Use substitution
x+y=30
2y=x

2y+y=30
3y=30
y=10
Tom is 10 years old.

x+y=30

x+10=30
x=20
Maria is 20 years old.



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Step-by-step explanation:

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Find the difference in temperature between each 1000 feet:

From 1 to 2: 30 - 23.5 = 6.5

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From 3 to 4: 17 - 10.5 = 6.5

The temperature change is constant as it drops 6.5 degrees for every 1000 foot gain in elevation.

At 5,000 feet the temperature would be : 10.5 - 6.5 = 4

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3 years ago
A. ( x + 5)<br><br>B. ( x - 5 )<br><br>C. ( x + 3 )<br><br>D. ( x - 3 )
Blababa [14]

Answer:

(x + 5) B. (x - 5) C. (x + 3) D. (x - 3) = = 0

Step-by-step explanation:

The calculator performs basic and advanced operations with fractions, expressions with fractions combined with integers, decimals, and mixed numbers. It also shows detailed step-by-step information about the fraction calculation procedure. Solve problems with two, three, or more fractions and numbers in one expression.

Rules for expressions with fractions:

Fractions - use the slash “/” between the numerator and denominator, i.e., for five-hundredths, enter 5/100. If you are using mixed numbers, be sure to leave a single space between the whole and fraction part.

The slash separates the numerator (number above a fraction line) and denominator (number below).

Mixed numerals (mixed fractions or mixed numbers) write as non-zero integer separated by one space and fraction i.e., 1 2/3 (having the same sign). An example of a negative mixed fraction: -5 1/2.

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An asterisk * or × is the symbol for multiplication.

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6 0
3 years ago
A graphic charges a fee of 1600 to design a poster for a jazz festival the designer also receives 8% commission on sales of the
iris [78.8K]

Answer:

The total income of designer from this work is $1649.6.

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The fees charged by the designer = $1600

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Hence, the total income of designer from this work is $1649.6.

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4 years ago
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