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3 years ago

What are the prime numbers between 5/2 and 43/5?

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

4 0

1 is the only prime number that will work.

Hope it helped!

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2 1/6 - (-8/3) + (-4 7/9) =

Vladimir [108]

Answer:

1/18

Step-by-step explanation:

First make it so they all have the same denominator.

So...

2 3/18 - (- 48/18) + (- 4 14/18)

Then we remove parenthesis...

2 3/18 +48/18 - 4 4/18

1/18

hope this helps

brainliest?

5 0

3 years ago

Four gallons of paint are used to paint 25 chairs. If each chair used the same amount of paint, how many gallons are used to pai

ella [17]

You have to do 25 divided by 4, which is 6.35.

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4 years ago

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Please help. Flow chart proof. I'll give brainliest

AveGali [126]

Step-by-step explanation:

Statement | Reason

CB=AB Given

DBC=DBA Given

DB = DB Reflexive Property

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/_\DBA SAS

Sorry for the formatting the =~ means congruent.

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2 years ago

A cash box contains $74 made up of quarters, half-dollars, and one-dollar

Strike441 [17]

Answer:

25 one-dollar coins, 16 half-dollar coins, and 164 quarters

Step-by-step explanation:

First, set up equations based on the information given:

$0.25q+0.50h+1.00d=74$

$\displaystyle{h=\frac{3}{5}d+1}$

$q=4(d+h)$

Then, substitute q in the first equation with the expression from the third equation:

$0.25[4(d+h)]+0.50h+1.00d=74\\1d+1h+0.50h+1.00d=74\\2d+1.5h=74$

Next, substitute h in that equation with the expression from the second equation:

$\displaystyle{2d+1.5(\frac{3}{5}d+1)=74}$

$2d+0.9d+1.5=74\\2.9d+1.5=74$

Solve for d, the number of one-dollar coins:

$2.9d+1.5=74\\2.9d=72.5\\d=25$

Substitute 25 for d in the second equation to find h, the number of half-dollar coins:

$\displaystyle{h=\frac{3}{5}d+1}$

$\displaystyle{h=\frac{3}{5}(25)+1}$

$h=15+1\\h=16$

Substitute 25 for d and 16 for h in the third equation to find q, the number of quarters:

$q=4(d+h)\\q=4(25+16)\\q=4(41)\\q=164$

Then, verify that the coins total $74:

$0.25(164)+0.50(16)+1.00(25)=74\\41+8+25=74\\74=74\\\text{Check.}$

Next, verify that the number of half-dollar coins is one more than three-fifths of the number of one-dollar coins:

$\displaystyle{h=\frac{3}{5}d+1}$

$\displaystyle{16=\frac{3}{5}(25)+1}$

$16 = 15 + 1\\16 = 16\\\text{Check.}$

Finally, verify that the number of quarters is four times the number one-dollar and half-dollar coins together:

$q=4(d+h)\\164=4(25+16)\\164=4(41)\\164=164\\\text{Check.}$

6 0

3 years ago

A triangular prism. The base of a triangular side is shaded. What are the possible shapes of cross sections of this figure? A cr

Alexxandr [17]

Answer:

the first one is triangle and the second one is rectangle

Step-by-step explanation:

i just did it on edge

3 0

3 years ago

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