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2 years ago

In a math class, 1/3 of the students fail a test, if twelve students have failed the test, how many students are in the class?

1 answer:

3 0

There would be 36 children in the class. What you would do is multiply twelve times 3 to get your answer. I hope I could be of assistance and please mark brainliest!

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In the coordinate plane, the point A, 4− 2 is translated to the point A′, 1− 5. Under the same translation, the points B, 7− 4 a

Inga [223]

Answer:

The coordinates of B' and C' are $B'(x,y) = (4, -7)$ and $C'(x,y) = (-1, -8)$ , respectively.

Step-by-step explanation:

From the Linear Algebra, we define the translation of a given point as:

$O'(x,y) = O(x,y) + T(x,y)$ (1)

Where:

$O(x,y)$ - Original point, dimensionless.

$T(x,y)$ - Translation vector, dimensionless.

$O'(x,y)$ - Translated point, dimensionless.

If we know that $A'(x,y) = (1, -5)$ and $A(x,y) = (4,-2)$ , then the translation vector is:

$T(x,y) = A'(x,y)-A(x,y)$ (2)

$T(x,y) = (1,-5)-(4,-2)$

$T(x,y) = (-3,-3)$

If we know that $B(x,y) = (7,-4)$ , $C(x,y) = (2,-5)$ and $T(x,y) = (-3,-3)$ , then the translated points are, respectively:

$B'(x,y) = B(x,y)+T(x,y)$ (3)

$B'(x,y) = (7,-4) +(-3,-3)$

$B'(x,y) = (4, -7)$

$C'(x,y) = C(x,y) +T(x,y)$

$C'(x,y) = (2,-5) + (-3,-3)$

$C'(x,y) = (-1, -8)$

The coordinates of B' and C' are $B'(x,y) = (4, -7)$ and $C'(x,y) = (-1, -8)$ , respectively.

5 0

2 years ago

The number of square feet per house are normally distributed with a population standard deviation of 137 square feet and an unkn

pshichka [43]

Answer:

Step-by-step explanation:

Given that X, the number of square feet per house is N(mean, 137)

Sample size = 19

Sample mean x bar =1350 sq ft

Since population std dev is given,

std error of sample = $\frac{137}{\sqrt{19} } \\=31.43$

Since sample size is small, t critical value can be used

df = 18

t value for 80% two tailed = 1.333

Margin of error = ±1.333(std error) = ± $1.333*31.43\\=41.896$

Confidence interval = sample mean ±margin of error

= $1350-41.896,1350+41.896\\=(1308.104,1391.896)$

7 0

3 years ago

Compute: 3.5 x 2.4 x 0.01 0.84 0.084 0.0084

Georgia [21]

The answer is 0.084.

8 0

3 years ago

The purchase price of an iPad is $625.00. There is a 15% discount and the tax rate is

vagabundo [1.1K]

Answer:

$573.75

Step-by-step explanation:

625.00x15%=93.75

625.00-93.75=531.25

531.25x8%=42.50

531.25+42.50=573.75

5 0

3 years ago

Read 2 more answers

Part One Katie recorded the length, in inches, of the ribbon pieces she was going to use for a project. Use this information for

ioda

The line plot that correctly represents the given data set is: line plot C.

On a line plot, the frequency of a data points is represented using "x" as many times as the data points appear in the data set.

The data point with the highest frequency is 11¼ which is also 11⅛. And they appear 4 times in the given data set.

So, the line plot that correctly shows the data is: line plot C.

Learn more about the line plot on:

brainly.com/question/27246403

#SPJ1

8 0

1 year ago