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ch4aika [34]
1 year ago
15

I want to know the answer and process

Mathematics
1 answer:
ki77a [65]1 year ago
3 0

Answer:

Step-by-step explanation:

help me with this and the. i will

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Write the ratio as a fraction in simplest form. The ratio for 18 girls to 27 boys as a fraction is .
love history [14]

Answer:

2/3

Step-by-step explanation:

Reduce the fraction 18/27 into its lowest terms

since both 18 and 27 are divisible by 9, divide both terms by 9

  18/9 = 2

  27/9 = 3

18/27 reduced to lowest terms is 2/3

6 0
3 years ago
During a period of 30 minutes, a music station played 5 minutes of commercials. What is the ratio of music they played to commer
SVETLANKA909090 [29]

Answer:

6

Step-by-step explanation:

30 divded by 6

6 0
3 years ago
Find the approximate area between the curve f(x) = -4x² + 32x and on the x-axis on the interval [0,8] using 4 rectangles. Use th
Doss [256]

Split up the interval [0, 8] into 4 equally spaced subintervals:

[0, 2], [2, 4], [4, 6], [6, 8]

Take the right endpoints, which form the arithmetic sequence

r_i=2+\dfrac{8-0}4(i-1)=2i

where 1 ≤ <em>i</em> ≤ 4.

Find the values of the function at these endpoints:

f(r_i)=-4{r_i}^2+32r_i=-16i^2+64i

The area is given approximately by the Riemann sum,

\displaystyle\int_0^8f(x)\,\mathrm dx\approx\sum_{i=1}^4f(r_i)\Delta x_i

where \Delta x_i=\frac{8-0}4=2; so the area is approximately

\displaystyle2\sum_{i=1}^4(-16i^2+64i)=-32\sum_{i=1}^4i^2+128\sum_{i=1}^4i=-32\cdot\frac{4\cdot5\cdot9}6+128\cdot\frac{4\cdot5}2=\boxed{320}

where we use the formulas,

\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2

\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6

6 0
3 years ago
Find the angle measure of angle E in Triangle DEF if angle D is 34 degrees &amp; angle E is 117 degrees.
Sliva [168]

Answer:

29

Step-by-step explanation:

full angle of a triangle is 180 and 34+177=151 then you just do 180-151=29.

4 0
2 years ago
Suppose that the waiting time for a license plate renewal at a local office of a state motorvehicle department has been found to
zysi [14]

The probability that a randomly selected individual will have a waiting time between 16 and 44 minutes is 93.72%.

Given mean of 30 minutes and standard deviation of 7.5 minutes.

In a set with mean d and standard deviation d. , the z score is given as:

Z=(X-d)/s.

where d is sample mean and s is standard deviation.

We have to calculate z score and then p value from normal distribution table.

We have been given d=30, s=7.5

p value of Z when X=44 subtracted by the p value of Z when X=16.

When X=44,

Z=(44-30)/7.5

=14/7.5

=1.87

P value=0.9686

When X=16

Z=(16-30)/7.5

=-1.87

P Value=0.0314.

Required probability is =0.9686-0.0314

=0.9372

=93.72%

Hence the probability that a randomly selected individual will have a waiting time between 16 and 44 minutes is 93.72%.

Learn more about z test at brainly.com/question/14453510

#SPJ4

7 0
2 years ago
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