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3 years ago

Use a benchmark to find an equivalent percent for each fraction. 9/10 and 2/5. Please help! :o will mark brainliest if can!

Mathematics

1 answer:

denpristay [2]3 years ago

3 0

Answer

9/10=90% and 2/5=40%

Explanation

9÷10=0.9 0.9x100=90%

2÷5=0.4 0.4x100=40%

hope this helps!

have a wonderful day :)

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7(2x-5)=21 What is x?

Over [174]

Answer:

x = 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

7(2x - 5) = 21

Step 2: Solve for x

Distribute 7: 2x - 5 = 3
Isolate x term: 2x = 8
Isolate x: x = 4

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: 7(2(4) - 5) = 21
Multiply: 7(8 - 5) = 21
Subtract: 7(3) = 21
Multiply: 21 = 21

Here we see that 21 does indeed equal 21.

∴ x = 4 is the solution to the equation.

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3 years ago

A 30 feet tall building casts a 5 foot shadow. what is the suns angle of inclination

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Make a drawing of the situation:

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Use the inverse tangent function to find the value of A:

$A=\tan ^{-1}(6)$

Use a calculator to find the numerical value of the inverse tangent of 6:

$A=80.52767779\ldots$

Therefore, the angle of inclination of the Sun is approximately 80.5°.

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1 year ago

A phone can update 6 apps every 4 minutes. At this rate, how many apps can the phone update in 10 minutes? Show your work.

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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So, we can write $x( 1 + \frac{4 \times 3}{12 \times 100}) = 1900$

{Because September 1 to January 1 is 4 months and the monthly simple interest rate is $\frac{3}{12}$ %}

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3 years ago

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spayn [35]

Answer:

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$\frac{0.81}{0.09} + \frac{0.81}{9}$

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I hope this helped!! If so please rate and mark brainliest <3!!

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