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VARVARA [1.3K]
3 years ago
14

I really need help on both but if you can only answer one that's perfectly fine!

Mathematics
2 answers:
Fofino [41]3 years ago
7 0

Answer:

110, 15%

Step-by-step explanation:

So for the first problem, recall that there is 100%. 12% of the answers on a test were missed.

There are 125 questions on the test.

To find the answer, what we can do it multiply 125 by 100%-12%

So 125*88%

THis can be looked at as:

125*.88

=

110

So we know the first answer is 110, now lets move onto the next one.

There a few ways of diong this, we could do 100%- each of the answers, and then multiply that by 2760 and see if we get 2400, but there is an easier way of doign this.

Take your 2760, and divide it by 2400. This will get you 1.15. So 2400 is increases by .15. This is equal to an increase of 15%.

There is a catch to this one however, when you divide 2400 by 2760, which should get you 85%, it gets you 86%. This would be 14%. So the answer seems to be 15%, but if not, its none of the above.

So answers:

110 and 15%(or none of the above)

Hope this helps! I am sorry about the bottom answer though, but 15% makes the most sense to me.

il63 [147K]3 years ago
6 0

Answer:

1.  Carrie got 15 of the 125 problems correct

12% or 125 = 15

12% * 125 = 0.12 * 125 = 15

2. "Not Here"

$2400 out of $2760 is %?

2400 ÷ 2760 = 0.8696

0.8696 • 100 = 86.96%

Hope this helps =)

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Answer:

y = x/4 - 1/2

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Step 1: Write equation

x = 4y + 2

Step 2: Subtract 2 on both sides

x - 2 = 4y

Step 3: Divide both sides by 4

x/4 - 1/2 = y

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3 years ago
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Determine if the sequence below is arithmetic or geometric and determine the
algol13

9514 1404 393

Answer:

  r = 2

Step-by-step explanation:

The first differences between successive terms are ...

  10 -5 = 5

  20 -10 = 10

The differences are not constant, so the sequence is NOT arithmetic.

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The ratios of successive terms are ...

  10/5 = 2

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The ratios are constant, so the sequence is ...

  geometric with a common ratio of 2.

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2 years ago
Solve. x + 9 = –15 x = [1] <br><br> help please
max2010maxim [7]

Answer:

1/2

Step-by-step explanation:

x + 9 = -15x = [1]

x - x + 9 = -15x -x = 1

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8 = 16x

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7 0
3 years ago
Read 2 more answers
Please help me , at least do one and explain it please .
Len [333]

9514 1404 393

Answer:

  1. 113.0 cm²
  2. 2464.0 in²
  3. 95.0 ft²

Step-by-step explanation:

1. The area of a circle is given by the formula ...

  A = πr² . . . . . where r is the radius

The radius is shown as 6 cm, so the area is ...

  A = (3.14)(6 cm)² = 113.0 cm²

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2. The radius is shown as 28 in. We note that this is a number divisible by 7, so we choose 22/7 for π.

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__

3. The radius is half the diameter, so is 11/2 = 5.5 ft. Then the area is ...

  A = (3.14)(5.5 ft)² = 95.0 ft²

_____

<em>Additional comment</em>

If you use a more exact value of π for problem 2, the area is 2463.0 in². If you use 3.14 as the value of π, the area rounds to 2461.8 in². For these values of pi (3.14 or 22/7), the answer is only good to about 3 significant digits. 2464 has more significant digits, so digits beyond the first 3 may be in error.

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2 years ago
What is 45.6 people per 3 square miles
Archy [21]

Answer:

I think that the correct answer is 15.2

Step-by-step explanation:

3 divided by 45.6 =15.2

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