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Inessa05 [86]
3 years ago
6

Kong took 15 percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 858585 seconds.

Mathematics
1 answer:
Alex3 years ago
4 0

Answer:

100 seconds

Step-by-step explanation:

I've seen this question before. I know you didn't mean to put 858585.

The real question is "Kong took 15% percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 85 seconds. How many seconds did Nolan take?"

Now let's work!

Kong took 15% fewer seconds than Nolan took.

So Kong took 100%−15%=85%

Whatever Nolan's total was, Kong had 85% of that.

We know Kong took 85 seconds. 85% of Nolan's total is 85 seconds.

=100 seconds. 85%=15 seconds

Which means that Nolan took 100 seconds.

Glad I was able to help!!

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What is 12.165 in word from
Kamila [148]
Twelve and one hundred sixty-five thousandths
4 0
2 years ago
I need help to find the measures and equation pls.
siniylev [52]

Answer:

Equation: 7x + 8x = 180

x = 12

∠CBA = 84

∠CFH = 96

Step-by-step explanation:

We can see that ∠CBA = ∠CFE and ∠CBD = ∠CFH.

We know that the sums of two angles on a straight line are going to be equal to 180.

∠CBA = 7x

∠CFH = 8x

To find the value of x, we must do the following:

7x + 8x = 180

15x = 180

15x/15 = 180/15

x = 12

Now we just substitute to find the angle measures:

∠CBA = 7 · 12 = 84

∠ CFH = 8 · 12 = 96

7 0
1 year ago
How much chromium-51 will be left after 7 months?
Makovka662 [10]

Answer:

It seems there's more information in you question that you haven't posted.

7 months = 7 * (365/12) = 213 days

The half-life of chromium 51 is 27.7 days.

After 7 months, chromium 51 will have undergone 7.69 half-lives.

To solve for the ending amount we'll use the formula:

Ending Amount = Beginning Amount / 2^n where 'n' = # of half-lives

We'll say the beginning amount =1

Ending Amount = 1 / 2^7.69

Ending Amount = 0.0048426082

Basicaly if you started with 1 gram of chromium 51, after 7 months you would have 0.0048426082 grams.

Source: https://www.1728.org/halflife.htm

Step-by-step explanation:

6 0
2 years ago
Given the following perfect square trinomial, fill in the missing term. <br><br> x2 − 16x + ____
soldier1979 [14.2K]
To make that a perfect square polynomial,
follow these steps:
1. Take the co-efficient of x term: here -16
2. Divide it by 2: -16/2 = -8
3. Square it. : (-8)^2 = 64

Thats it! 64 is the missing term you need :)
6 0
2 years ago
Read 2 more answers
What is the total cost of a compact disc that costs $13.99 plus a 4% sales tax
iren [92.7K]

If you multiply 13.99x0.04=.5596

then you added

13.99+.5596=14.5496

And this is your answer

7 0
2 years ago
Read 2 more answers
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