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Nadusha1986 [10]
3 years ago
15

BRAINLIEST IF CORRECT In arithmetic, variables look like ___.

Mathematics
1 answer:
Wittaler [7]3 years ago
8 0

Answer:

they are usually letters, most commonly 'x'

Step-by-step explanation:

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Isabella can jump 4 feet 4 inches, Ryan can jump 1 yard 1 foot, and David can jump 51 inches. Who can jump the farthest?
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Answer:

isabella

Step-by-step explanation:

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A student has a 2% salt water solution and a 7% salt water solution. To best imitate salt water at a local beach, he needs 1 lit
FromTheMoon [43]

Let

x-------> the amount of 2\% solution

y--------> the amount of 7\% solution

we know that

2\%=0.02\\7\%=0.07\\3.5\%=0.035

so

x+y=1

y=1-x -------> equation A

0.02x+0.07y=0.035 -------> equation B

substitute equation A in equation B

0.02x+0.07(1-x)=0.035

0.02x+0.07-0.07x=0.035

0.05x=0.035

x=0.7\ liters

find the value of y

y=1-x

y=1-0.7=0.3\ liters

therefore

The student need 0.7\ liters of 2\% solution and 0.3\ liters of 7\% solution

<u>the answer is</u>

A) The percent values were written incorrectly in the equation

B) The amount of 7% solution should be written as 1 – x, not x – 1.

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3 years ago
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Help me with this please ​
Bess [88]

Answer:

A

Step-by-step explanation:

Brainliest PLEASE

3 0
2 years ago
CAN SOMEONE PLS HELP ME W THIS PROBLEM I NEED HELP ASAP
denis-greek [22]

The blank spaces about the passage can be filled with the following correct vocabulary respectively.

  • inequality
  • strict inequality
  • compound inequality
  • solution sets
  • true

<h3>Inequality</h3>

An <u>inequality</u> is a relation between two numbers and/or expressions that are related via <, >, ≥ or ≤ sign.

A <u>strict inequality</u> is an expression that uses < and >. It tells us that one side is only more or less than the other side.

When 2 simple inequalities are joined by or and, we get a <u>compound inequality</u>.

When solving an inequality, the solution will be a range of values called its <u>solution sets</u>. The inequality will remain <u>true</u> for every single value in this range.

The inequality signs are;

  • Greater than >
  • Less than <
  • Greater than or equal to ≥
  • Less than or equal to ≤
  • Equal to =

Learn more about inequality:

brainly.com/question/25275758

#SPJ1

6 0
1 year ago
Betty is making 6 skirts. Each skirt uses 2/3 of a yard. How many yards does she need?
AysviL [449]

Answer:

She needs 4 yards.

Step-by-step explanation:

To multiply fractions, you just multiply the whole number by the numerator of the fraction.

<em>The numerator is the top number of a fraction.</em>

<em>The denominator is the bottom number of a fraction.</em>

You can think of the whole number 6 as the fraction 6/1.

<h3>Step 1</h3>

Multiply 6/1 by 2/3

6x2=12

1x3=3

So, 6/1x2/3=<u>12/3</u>

<u></u>

<h3>Step 2</h3>

Now you need to simplify the fraction

Because the numerator is a muliple (number that can be devided by) of 3, devide the numerator by the denominator.

12÷3=4

<h2>So betty needs 4 yards of fabric to make 6 skirts.</h2>

8 0
3 years ago
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