4 years ago

Plz help me with this question 8k - 2(4 - 3k)=

Mathematics

1 answer:

GaryK [48]4 years ago

4 0

8k - 8 + 6k

= 14k-8

Hope I helped!

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Sound travels about 750 miles per hour. If you stand in a canyon and sound a horn, you will hear an echo.

cricket20 [7]

Answer:

The sound takes time to go to a point and reflect back to your position.

It means the sound went twice a distance.

=> Suppose it takes about 0.5 seconds to hear the echo, the canyon wall would be [750 x (0.5/3600)]/2 = 0.052 miles

=> Suppose it takes about n seconds to hear the echo, the canyon wall would be [750 x (n/3600)]/2 miles

Hope this helps!

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3 years ago

How Would you solve 4 ≤ -5 -x Please include your steps

Serga [27]

4 ≤ -5 - x

x ≤ -5 - 4

x ≤ -9

x ∈ (-∞; -9]

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4 years ago

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Gnesinka [82]

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3 years ago

Please help I cannot figure this one out!

ra1l [238]

Answer:

77.47%

Step-by-step explanation:

We have to use Bayes Theorem in solving this problem.

This theorem's formula is:

P(A | B) = $\frac{P(A and B)}{P(B)}$

Where the " | " means <u><em>"given that"</em></u>.

For our problem, using bayes theorem, we can write:

P(Student has lice | positive ) = $\frac{P(StudentHasLice and Positive)}{P(Positive)}$

P(Positive) = 0.1692 + 0.0492 = 0.2184
P (Student has Lice & Positive ) = 0.1692

So P(Student has lice | Positive ) = $\frac{0.1692}{0.2184}=0.7747$

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3 years ago

I have a 88.1% plus 15 out of 15 and plus another 15 out of 15 what is my grade now

weqwewe [10]

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