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Aleksandr-060686 [28]
2 years ago
7

Plz help I need help

Mathematics
2 answers:
guajiro [1.7K]2 years ago
5 0

Answer:

The ratios are proportional ratios

Soloha48 [4]2 years ago
4 0

Answer:

Step-by-step explanation:

The ratios are proportional

\dfrac{5}{12}=\dfrac{5*2}{12*2}=\dfrac{10}{24}

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g At a certain gas station, 30% of all customers use the restroom. What is the probability that, out of the next 10 customers, (
Kruka [31]

Answer:

P(x=4) = 0.200

Step-by-step explanation:

Given

n=10 --- selected customers

x = 4 --- those that are expected to use the restroom

p =30\% = 0.30 --- proportion that uses the restroom

Required

P(x = 4)

The question illustrates binomial probability and the formula is:

P(x) = ^nC_x * p^x * (1 - p)^{n - x}

So, we have:

P(x=4) = ^{10}C_4 * (0.30)^4 * (1 - 0.30)^{10 - 4}

P(x=4) = ^{10}C_4 * (0.30)^4 * (0.70)^6

P(x=4) = 210* (0.30)^4 * (0.70)^6

P(x=4) = 0.200

4 0
3 years ago
Which expression is equivalent to the following complex fraction? StartFraction 2 Over x EndFraction minus StartFraction 4 Over
aliina [53]

Answer:

its A

Step-by-step explanation:

8 0
3 years ago
Write the number in standard notation. 9x 10^-4
max2010maxim [7]

Answer:

0.0009

Step-by-step explanation:

9*10⁻⁴ = 0.0009

4 0
3 years ago
y= -16t^2 +400, where t represents the number after the camera is dropped. How long will it take before Kay sees the splash from
Sholpan [36]
Your problem statement needs a bit of correction:

"<span>Y= -16t^2 +400, where t represents the number OF SECONDS after the camera is dropped. How long will it BE before Kay sees the splash from the camera hitting the water?"

Set y = -16t^2 + 400 = 0.  We assume that 400 and 0 represent feet (English system).

Then 16t^2 = 400, and so 25 = t^2.  Only the positive square root makes sense here, and that root is 5 (seconds).</span>
3 0
3 years ago
Read 2 more answers
Determine whether the ordered pair is a solution to the inequality. (-1, -1); y Greaterthanorequalto - x + 7 (5, 3); y &gt; 3/4
Art [367]

Answer:

No and Yes.

Step-by-step explanation:

The inequation is y ≥-x+7 and the pair is (x,y)=(-1,-1). Then:

-1≥ -(-1)+7

-1 ≥ 1+7

-1 ≥ 8, but this is not true, so (-1,-1) is not a solution of y ≥-x+7.

On the other hand, the inequation is y>(3/4)x-5 and the pair is (5,3). Then:

3>(3/4)(5)-5

3>(15/4)-5

3> -5/4 and this is true, so (5,3) is a solution of  y>(3/4)x-5.

3 0
3 years ago
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