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2 years ago

Help me. Two numbers have a sum of 30. Half of their difference is 7. Find the numbers.

Mathematics

2 answers:

igor_vitrenko [27]2 years ago

7 0

Answer:

the correct answers are 22 and 8

Aleonysh [2.5K]2 years ago

6 0

Answer:

the answer is x equals 22 and y equals 8

Step-by-step explanation:

first equation is x+y=30

Second equation is x-y/2=7 that simplify's to x-y=14

then you add then so they will cancel out and you are left with 2x=44 so divide two by both sides which gives x=22

then you subsitute the 22 in the first equation. It will be 22+y=30 then you subtract 22 from the 30 that gives you y=8

so the two numbers are 22 and 8

Hope this helps!!!!

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Vedmedyk [2.9K]

Answer:

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Step-by-step explanation:

Given data

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Hence the conversion from kilometers to miles is presented below

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3 0

2 years ago

Four students simplify the expression below: 6 + 4 x 10 ÷ 2 Anshu's solution is 25 , David's solution is 46 , Jimmy's solution i

Mrac [35]

Answer:

Jimmy; 26

Step-by-step explanation:

PEMDAS

Parentheses Exponents Multiplication Division Addition Subtraction

6 + 4 * 10 / 2 = 6 + 40 / 2

6 + 40 / 2 = 6 + 20

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2 years ago

If a box of Crackers contain six servings and has a total of 450 calories, find the number of calories per serving

almond37 [142]

Answer:

Step-by-step explanation:

450/6 = 75

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3 years ago

What is the product of (7 x 10^-5) x (5 x 10^-8) <br> (7 x 10^-5) x (5 x 10^-8) = ? x 10^?

arsen [322]

Answer:

$3.5\times10^-^1^2$

Step-by-step explanation:

$(7 \times 10^-5) \times (5 \times 10^-8)$

Evaluate

$(7 \times 5)\times(10^-^5\times10^-^8)$

$35\times10^-^5^-^8$

$35\times10^-^1^3$

$35\times10^1\times10^-^1^3$

$3.5\times10^1^-^1^3$

$3.5\times10^-^1^2$

Thus, the answer is $3.5\times10^-^1^2$

<em>~Lenvy~</em>

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2 years ago

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yan [13]

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1 year ago