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3 years ago

Patricia scored 80% on her math test. She missed 4 problems. How many problems were on the test?

Mathematics

1 answer:

Yuri [45]3 years ago

3 0

Hey there!

If she missed 4 problems, and that took off 20%, that means 4 is 20% of the total items.

20% is the same as 1/5 of the total amount, since there are 5 20s in 100.

So, we can simply multiply 4 by 5 to get the total amount of problems.

4 x 5 = 20

This means there were 20 problems on the test.

Hope this helps!

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An extremely handsome math teacher was on a farm and he counted 32 animals; all pigs and chickens. Then he counted the number of

statuscvo [17]

Answer:

12 pigs and 20 chickens

Step-by-step explanation:

Chicken = 2 legs

Pig = 4 legs

(15 * 4) + (17 * 2) = 88 NO

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3 years ago

The cost y (in dollars) to rent a lane at the bowling alley is proportional to the number x of hours that you rent the lane. It

Alika [10]

Answer:

a) y = 9x

b) For every increase of 1 hour the price to rent the lane increases by $9.

c) $27

Step-by-step explanation:

a) Since it costs $18 for 2 hours we can infer that for every 1 hour it costs $9.

So, the equation would look like this:

y = 9x

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c) Plug 3 into the equation:

y = 9(3)

y = 27

Therefore, it costs $27 to rent the lane for 3 hours.

I hope this helps!!

- Kay :)

5 0

2 years ago

Read 2 more answers

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Burka [1]

Answer:

185×30÷100=55.5

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8 0

3 years ago

If an outfit consists of one shirt, one pair of jeans, and one pair of shoes, how many outfits can be made from five pairs of je

alexandr402 [8]

Answer:

Step-by-step explanation:

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2 years ago

Show that the transformation T defined by T(x1, x2) = (2x1 - 3x2, X1+4, 5x2) is not linear.

erastovalidia [21]

Let u = (1, 0) and v = (0, 1). Then

T (u) = (2*1 - 3*0, 1 + 4, 5*0) = (2, 5, 0)

T (v) = (2*0 - 3*1, 0 + 4, 5*1) = (-3, 4, 5)

=> T (u) + T (v) = (-1, 9, 5)

but

T (u + v) = T (1, 1) = (2*1 - 3*1, 1 + 4, 5*1) = (-1, 5, 5)

=> T (u + v) ≠ T (u) + T (v)

which means T does not preserve addition, so it is not linear.

4 0

2 years ago