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3 years ago

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Mathematics

2 answers:

scoray [572]3 years ago

8 0

Answer:

Step-by-step explanation:

saw5 [17]3 years ago

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Answer:

Step-by-step explanation:

brainliest plz?

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What should the following equation be multiplied by in order to eliminate the fractions? x over 2 + x over 3 = 25 over 3

Kobotan [32]

D.6

Step-by-step explanation:

try multiplying everything by one of the numbers

(x/2)6 + (x/3)6 = (25/3)6

6x/2+ 6x/3 = 150/3

3x +2x = 50

8 0

3 years ago

What is the median (middle number) in the data set? 48, 52, 57, 61, 64, 72, 76, 77, 81, 85, 88

Bingel [31]

Step-by-step explanation:

48, 52, 57, 61, 64, 72, 76, 77, 81, 85, 88

the middle number is 72

7 0

3 years ago

20 POINTS!!! Mr. Moore is installing new work benches in the wood shop. He wants the height of the benches to be best for studen

liubo4ka [24]

A: Suppose Mr. Moore decides to use 20 seventh graders as the sample. Is this sample a random sample? Explain your reasoning.

Ans: No, because he only chose the seventh graders which is invalid since he wants to have to use the mean height which involves the 6th, 7th and 8th graders.

B: Mr. Moore decides to use a random number generator to select 20 students from the school. Suppose that when choosing 20 students using the random generator on the graphing calculator, Mr. Moore’s sample is all eighth graders. Does that mean the sample is not a random sample? Explain your reasoning.

Ans: No, it is still a random sample. Since he is using a random generator, there is a possibility that the random generator would pick all students from the 8th grade. Unlike the first one, the random generator is not biased towards any grade, it is just a coincidence.

6 0

4 years ago

Read 2 more answers

Find the values of x and y if (2x + y, 2) = (1, x - y).

m_a_m_a [10]

Answer:

We have, 2x+y=3 .......(1)

xy=1....(2)

In equation (2), we get

..........(3)

y put in the equation (1)

2x+

+1=3x

−3x+1=0

−3x−1x+1=0

2x(x−1)−1(x−1)=0

x=1, x=

We take the value of x=1

x value put in equation (1)

2(1)+y=3

y=3−2

y=1

x=1

x and y value put (x+y)

x−y

=(1+1)

(1−1)

Hence, this is the answer

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6 0

2 years ago

Read 4 more answers

Jeri is a hairdresser. The table below shows the relationship between the number of clients she has per month, x, and her monthl

LenaWriter [7]

The given data is

x f(x)
---- --------
12 0
20 800
30 1800

where
x = number of clients per month
f(x) = monthly revenue

A graph of the data is shown below.
Let the equation of the line be
y = mx + c

The x-intercept is 12, therefore
12m + c = 0 (1)

The line passes through (30, 1800) and (12,0). Therefore the slope is
m = 1800/(30-12) = 100 (2)

From (1), obtain
c = -12m = -12*100 = -1200

Therefore
y = 100x - 1200

Answer: D. f(x) = 100x - 1200

3 0

3 years ago