3 years ago

At Glenridge High School, 20 percent of the

Mathematics

1 answer:

Makovka662 [10]3 years ago

3 0

Answer:

40 percent

Step-by-step explanation:

60 - 20 = 40

Reasoning: The amount of seniors that attended was 20 percent, so 60 (total students) percent minus 20 percent is equal to 40 percent.

Hope this helps!

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Marti has a jar of 161 coins consisting of pennies and nickels. The total value of the coins is $3.09. How many nickels does Mar

rodikova [14]

Okay, so there are nickels and pennies in this jar.

So, let's call the number of pennies X

Since there are 161 coins altogether, the number of nickels is (161 - X)

So now we solve the equation:

.01X + .05(161 - X) = 3.09

.01X + 8.05 - .05X = 3. 09

4.96 = .04X

124 = X

So, there are 124 pennies

Therefore, there are 161 - 124 = 37 nickels

Let's check our answer:

124 x .01 + 37x .05 = 1.24 + 1.85 = 3.09

It works!

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3 years ago

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mrs_skeptik [129]

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Answer:

-4, 0

Step-by-step explanation:

The denominator is x^2+4x. This is zero when ...

x^2 +4x = 0

x(x +4) = 0

The zero product rule tells you the product is zero when the factors are zero.

x = 0

x +4 = 0 ⇒ x = -4

The denominator is zero for x=0 and x=-4.

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3 years ago

In polygon QRST, what is the name of the angle that is included between sides SR and SQ?

Lubov Fominskaja [6]

Angle RSQ
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The graph shows the number of items sold by category at a yard sale.

ahrayia [7]

Answer: 62

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I might be wrong sorry

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