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3 years ago

Help pleaseeeeeeeeeeeeeeeeeeee

Mathematics

1 answer:

blondinia [14]3 years ago

5 0

I think it’s (-1,-6) for the first one. And the second one might be (3,-3). I’m so sorry if these are wrong. I haven’t done this in a few years

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A 13.5 gallon gasoline tank is for fifth for how many gallons will it take to fill the tank

Alekssandra [29.7K]

Since I am guessing that you mean One Fifth of the way filled my answer is 10.8 because when you divide 13.5 by five you get 2.7. And since one fifth is already filled, you just have to multiply it by four.

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3 years ago

What is the greatest common factor of: 6c^3d - 12c^2d^2 + 3cd?

VMariaS [17]

I hope this helps you

4 0

4 years ago

Last question was inncorrectly typed:1.A sample of students who has taken a calculus test has a mean =78.2, mode =67, median 67.

vampirchik [111]

Answer:

(A) The data set of the sample of students who has taken a calculus test is right skewed.

(B) The average of female students in the class is 66.

Step-by-step explanation:

(A)

For a left skewed distribution the Mean < Median < Mode.

For a right skewed distribution the Mean > Median > Mode.

For a symmetric distribution the Mean = Median = Mode.

Given: Mean = 78.2, Median = 67 and Mode = 67

In this case the mean of the data is more than the median and mode.

$Mean = 78.2>Median = Mode = 67$

Thus, the data set of the sample of students who has taken a calculus test is right skewed.

(B)

Total number of student ( $n$ ) = 35

Combined average ( $\mu_{c}$ ) = 70

Number of male student ( $n_{M}$ ) = 20

Average of male students ( $\mu_{M}$ ) = 73

Number of female student ( $n_{F}$ ) = 15

Average of female students = $\mu_{F}$

The formula to compute the combined average is:

$\mu_{c}=\frac{n_{M}\mu_{M}+n_{F}\mu_{F}}{n_{M}+n_{F}}$

Compute the value of $\mu_{F}$ as follows:

$\mu_{c}=\frac{n_{M}\mu_{M}+n_{F}\mu_{F}}{n_{M}+n_{F}}\\70=\frac{(20\times73)+(15\times\mu_{F})}{20+15}\\ 70\times35=1460+(15\times\mu_{F})\\\mu_{F}=\frac{2450-1460}{15} \\=66$

Thus, the average of female students in the class is 66.

8 0

4 years ago

What's the answer? 5h(k-13)+3=49-k equality<br><br>please answer...

postnew [5]

Answer: 50k maybe the

Step-by-step explanation:

5 0

3 years ago

Determine the equation of a parabola with vertex (1,5) and passes through point (0,2).

Ne4ueva [31]

Answer:

y=-3(x-1)^2+5

Step-by-step explanation:

The vertex form of a parabola is y=a(x-h)^2+k where (h,k) is the vertex.

We are given the vertex (h,k) is (1,5) so that makes the equation we have

y=a(x-1)^2+5.

We still need to find a.

We do have the point (0,2) on our parabola.

So replace (x,y) with (0,2) and solve for a.

2=a(0-1)^2+5

2=a(-1)^2+5

2=a(1)+5

2=a+5

-3=a

So the equation is

y=-3(x-1)^2+5

7 0

3 years ago