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3 years ago

There are less than 50 students in this class. Today, only 97.5% of the class is here. How many students are in this class?

Mathematics

2 answers:

Viktor [21]3 years ago

3 0

Answer:

Step-by-step explanation:

uysha [10]3 years ago

3 0

Answer:

40 students

Step-by-step explanation:

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A florist arranges 4 flower arrangements in 92 minutes.

Black_prince [1.1K]

Answer:

$\boxed {\boxed {\sf 9 \ arrangements }}$

Step-by-step explanation:

Let's set up a proportion using the following setup:

$\frac{arrangements}{minutes} =\frac{arrangements}{minutes}$

We know that the florist can arrange 4 in 92 minutes.

$\frac{4 \ arrangements}{92 \ minutes} = \frac{arrangements}{minutes}$

We don't know how many the florist can arrange in 207 minutes, so we say x arrangements can be completed in 207 minutes.

$\frac{4 \ arrangements}{92 \ minutes} = \frac{ x \ arrangements}{ 207 \ minutes}$

$\frac{4}{92} =\frac{x}{207}$

Solve for x by isolating it on one side of the proportion.

x is being divided by 207. The inverse of division is multiplication. Multiply both sides of the proportion by 207.

$207*\frac{4}{92}=\frac{x}{207}*207$

$207*\frac{4}{92}=x$

$207*0.0434782609=x$

$9=x$

The florist can arrange <u>9 arrangements</u> in 207 minutes.

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3 years ago

In January, the depth of a lake was 808 feet. In August, the depth of the lake was 606 feet. What is the percentage decrease dec

Akimi4 [234]

Answer:

Step-by-step explanation:

808-606/808

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3 years ago

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What is the value of x in the equation 3X minus 4Y equals 65, when Y equals four

Vika [28.1K]

Answer:

Step-by-step explanation:

3x-4y=65

3x=65+4y

x=(65+4y)/3, when y=4

x=(65+4*4)/3

x=(65+16)/3

x=81/3

x=27

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3 years ago

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Simplify radical (1-cos0)(1+cos0)/ cos^2 0<br><br> HELP ME PLS!! ASAP

ycow [4]

That would be tan

(1-cos)(1+cos)=1-cos² which equals to sin²

√sin²/cos²= sin/cos which equals to tan

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3 years ago

Carlene is selling T-shirts for a fundraiser. The T-shirts cost $20.50 each. To date, she has raised $800. Her goal is to raise

Xelga [282]

Carlene needs to sell 480 shirts to meet her goal.

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3 years ago

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