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kupik [55]
3 years ago
7

Alright im feeling generous and ill give 100 points and brainliest to the person who wins

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
8 0

Answer:

thank you and please have me win

Step-by-step explanation:

please give brainliest and a win

how do you win

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Celeste wants to have her hair cut and permed and also go to lunch. She knows she will need $68. The perm costs twice as much as
Nezavi [6.7K]
Let P=Perm cost
Let H = Haircut cost
Let L = Lunch cost

Perm costs twice as much as haircut so.. P = 2H
L = 5

H + P + L = 68 the total cost is $68

H + 2H + 5 = 68 since P = 2H and L=5

3H + 5 = 68

3H =63

H = 63/3

H = 21

A Haircut is $21
Perm = 2H = 2(21) = $42
6 0
2 years ago
Read 2 more answers
What is the slope of the function, represented by the table of values below ?
Komok [63]
For a given function, slope is defined as the change in outputs, or y-values divided by the change in inputs, or x-values. In essence the slope asks "For a given change in x, how much does y change?" or even more simply: "How steep is the graph of this function?". This can be represented mathematically by the formula:
m=\frac{rise}{run}=\frac{\Delta y}{\Delta x}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

Since we have a table of x,y pairs it's the last form of that equation that will be the most useful to us. To compute the slope we can use any two pairs, say the first two, and plug them into our formula:
m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{4-10}{0-(-2)}=\frac{-6}{2}=-3

We can check this answer by using a different pair, say the last two:
m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{(-23)-(-14)}{9-6}=\frac{-9}{3}=-3.

As a common sense check: Our y-values get smaller as our x-values get bigger so a negative slope makes sense. 

m=-3
5 0
3 years ago
Which value of x satisfies both -9x + 4y = 8 and -3x − y = 4 given the same value of y?
liq [111]

Answer:

C

Step-by-step explanation:

Since y will have same value, y doesn't really matter. Thus,

We can solve for y in the 2nd equation as:

-3x - y = 4

-3x - 4 = y

Now we can plug it into the first and solve for x:

-9x + 4y = 8

-9x + 4(-3x - 4) = 8

-9x - 12x - 16 = 8

-21x = 8 + 16

-21x = 24

x = 24/-21

x = -8/7

Correct answer is C.

4 0
2 years ago
Read 2 more answers
Marking BRAINLYEST need help ASAP
Andrei [34K]

Answer:

c

Step-by-step explanation:

.............,.......... confused with a and c

4 0
3 years ago
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Or a very large set of data the measured mean is found to be 288.6 with a standard deviation of 21.2. assuming the data to be no
SashulF [63]

The 68-95-99.7 rule tells us 68% of the probability is between -1 standard deviation and +1 standard deviation from the mean. So we expect 75% corresponds to slightly more than 1 standard deviation.

Usually the unit normal tables don't report the area between -σ and σ but instead a cumulative probability, the area between -∞ and σ. 75% corresponds to 37.5% in each half so a cumulative probability of 50%+37.5%=87.5%. We look that up in the normal table and get σ=1.15.

So we expect 75% of normally distributed data to fall within μ-1.15σ and μ+1.15σ

That's 288.6 - 1.15(21.2) to 288.6 + 1.15(21.2)

Answer: 264.22 to 312.98


8 0
3 years ago
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