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a_sh-v [17]
3 years ago
7

Write the sentence as an equation Then solve ;5 less than one half of a number n is 21

Mathematics
1 answer:
nirvana33 [79]3 years ago
4 0

Answer:

Step-by-step explanation:

1/2n - 5 = 21

1/2n = 21+5

1/2n = 26

n = 26 x 2

n = 52

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A dentist has 400 male and female patients that range in age is from 10 years old to 50 years old and up. What is the experiment
Lena [83]

Answer:

1/8

Step-by-step explanation:

A dentist has 400 male and female patients that range in age is from 10 years old to 50 years old and up. What is the experimental probability that the next patient will be female and in the age range of 22 through 39?

                      10-21            22-39           40-50            50+

Male                44                 66                32                 53

Female            36                 50                45                 74

There are 400 male and female patient in total

there 400 possible outcome

Total number of possible outcome = 400

There are 50 females in 22-39 range and thus there are 50 favourable outcome

The probability is the number of favourable outcome divided by the number of possible outcome

P=\frac{50}{400} \\\\= \frac{1}{8}

= 0.125

=12.5%

4 0
3 years ago
Factor z^2+7z-18<br> what is the factor expression?
kobusy [5.1K]

Answer:

z²+7z-18=0.

z²+9z-2z-18=0.

(z²+9z)-(2z-18)=0.

z(z+9)-2(z+9)=0.

(z-2)(z+9)=0.

(z-2)=0 or (z+9)=0.

z-2=0 or z+9=0.

z=2 or z=-9.

6 0
3 years ago
Determine the period of this function​
Salsk061 [2.6K]
<h3>Answer:  C) 6</h3>

Explanation:

The function is somewhat sinusoidal but not entirely. Its composed of piecewise line segments when we should have a single continuous smooth curve; however, it's still periodic since it repeats itself.

Let's start at the top at the left most corner. This point has x coordinate of x = 1.

The other endpoint of this top left flat portion is when x = 2. Then the function curve goes downhill until it reaches x = 4. From x = 4 to x = 5, we're at the flat bottom part. From x = 5 to x = 7 is when the function increases.

Once we get to x = 7, the process described earlier starts all over again. So this is when the cycle ends and the length of the period is 7-1 = 6 units. The function repeats itself every 6 units, or you can say the length of each cycle is 6 time units (eg: 6 seconds).

5 0
3 years ago
100 points to answer!
choli [55]

Answer: 27.47

Step-by-step explanation:

(sin(70) * 10) / sin(20)) = 27.47

don't know much, but try that

4 0
3 years ago
Read 2 more answers
Grandma made an apple pie. Josh and his brother Joe finished 4/5 of it. Then, three friends came over and shared the leftover pi
Brut [27]

Answer:

each freind would get 1/15 of the pie

Step-by-step explanation:

1/5 divide by 3 equals 1/15

7 0
3 years ago
Read 2 more answers
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