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3 years ago

To find the value of an expression is to what?

Mathematics

2 answers:

DochEvi [55]3 years ago

7 0

Answer:

evaluate

Step-by-step explanation:

um duh

but I hope I helped in some way

fenix001 [56]3 years ago

4 0

It’s C, to evaluate

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Riverside elementary school is holding a schoolwide election to choose a color. 5/8 of the votes were for blue. 5/9 of the remai

sleet_krkn [62]

Answer:

There were 180 votes for blue.

Step-by-step explanation:

Given:

Riverside elementary school is holding a schoolwide election to choose a color. 5/8 of the votes were for blue. 5/9 of the remaining votes were for green and the remaining 48 votes were for red.

Now, to find the votes for blue.

Let the total votes be $x.$

The votes for blue:

$\frac{5}{8} \ of\ x$

$=\frac{5}{8} \times x$

$=\frac{5x}{8}$

Remaining votes are:

$x-\frac{5x}{8} \\\\=\frac{8x-5x}{8} \\\\=\frac{3x}{8}$

The votes for green:

$\frac{5}{9} \ of\ \frac{3x}{8} \\\\=\frac{5}{9} \times \frac{3x}{8} \\\\=\frac{15x}{72}$

The remaining votes for red = 48.

Now, the total votes are:

$\frac{5x}{8} +\frac{15x}{72} +48=x\\\\\frac{45x+15x+3456}{72}=x\\\\\frac{60x+3456}{72}=x$

Multiplying both sides by 72 we get:

$60x+3456=72x$

Subtracting both sides by 60 $x$ we get:

$3456=12x$

Dividing both sides by 12 we get:

$288=x\\\\x=288.$

Thus, the total votes = 288.

Now, to get the votes for blue:

$\frac{5}{8} \ of\ 288\\\\=\frac{5}{8}\times 288\\\\=0.625\times 288\\\\=180.$

Therefore, there were 180 votes for blue.

8 0

4 years ago

What is the product of the radical expression? (7-sqrt2)(8+sqrt2)

victus00 [196]

The answer is: 56-sqrt2

5 0

3 years ago

Five thousand tickets are sold at $1 each for a charity raffle. tickets are to be drawn at random and monetary prizes awarded a

const2013 [10]

Answer:

Expected value of raffle = $-0.67

Step-by-step explanation:

Number of tickets sold = 5,000

Selling price of each ticket = $1

1 prize = $500

3 prizes = $300

5 prize = $30

20 prizes = $5

The value of each ticket is given by

value = $500*(1/5000) + $300*(3/5000) + $30*(5/5000 + $5*(20/5000)

value = $0.1 + $0.18 + $0.03 + $0.02

value = $0.33

The expected value is

Expected value = value - selling price

Expected value = $0.33 - $1

Expected value = -$0.67

Therefore, the expected value of this raffle is -$0.67 if you buy 1 ticket.

The negative sign means that you are most likely to lose $0.67 if you buy a raffle ticket for $1.

6 0

3 years ago

If 5b=6a+16 and 9a=7b-20, then what are the values of a and b? show work.

Strike441 [17]

Answer:

a = 4, b = 8

Step-by-step explanation:

Rewrite 5b=6a+16 and 9a=7b-20 vertically:

5b=6a+16

9a=7b-20

Let's use substitution. Solve the first equation for b:

6a + 16

b = --------------

Substitute this result into the second equation:

9a = 7(b) + 16, or

6a + 16

9a = 7*-------------- - 20

Eliminate the fraction by multiplying all three terms by 5:

45a = 7(6a + 16) - 100, or

3a = 112 - 100, or:

3a = 12, which leads to a = 4.

Find b by subbing 4 for a in either of the given equations:

5b = 6(4) + 16, or

5b = 40, leading to b = 8

The solution is a = 4, b = 8

3 0

3 years ago

What figure is always a rectangle and a rhombus?

katrin [286]

Answer:

square

Step-by-step explanation:

7 0

3 years ago