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3 years ago

I have to use keep change flip and simplify my question

Mathematics

1 answer:

Kay [80]3 years ago

7 0

-x^3-4x^2+3x/x^2-16

try reducing the fraction before trying to solve it, then it'll help you find the answer:)

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Find the surface area of the rectangle prism. 3cm 9cm and 6cm

lisabon 2012 [21]

Answer:

198 cm²

Step-by-step explanation:

We are given the dimensions of a rectangular prism;

3cm 9cm and 6cm

We are required to determine its surface area;

We need to know that;

Surface area of a rectangular prism is given by;

A = 2(WL+HL+WH)

Where L, W and H are length , width and height respectively;

Assuming;

Width is 3 cm

Length is 9 cm, and

Height is 6 cm

Then;

Area = 2 ( (3×9) + (6×9) + (3×6))

= 2(99)

= 198 cm²

Therefore, the area of the rectangular prism is 198 cm²

6 0

3 years ago

A teacher selects students from her class of 37 students to do 4 different jobs in the classroom: pick up homework, hand out per

dolphi86 [110]

Answer:

66045 ways

Step-by-step explanation: There are actually total of 37 student, and total of 4 jobs. But if the jobs are to be done by only one person each, then we are selecting 4 students.

So the number of ways of selecting 4 out of 37 using combination is

=37C4

=37!/(37-4)!(4!)

=37!/33!4!

=66045

4 0

3 years ago

A high school class consists of 7 seniors, 10 juniors, 12 sophomores, and 11 freshmen. Exactly 4 of the juniors are female,

jekas [21]

Answer:

1/13

Step-by-step explanation:

There exactly 7 seniors 10 Juniors, 12 sophomores and 11 freshman

in which 4 of the juniors are Female , and exactly 2 of the sophomores are male. Therefore,

10-4= 6 juniors are male

12-2 = 10 female sophomores

Total = 7+10+12+11= 40 students

P(male junior then female soph.)= $\frac{6}{40}\times\frac{10}{39}= \frac{1}{26}$

P(female soph then male junior)= $\frac{10}{40}\times\frac{6}{39}= \frac{1}{26}$

Therefore the final answer will be = 1/26 +1/26= 1/13

6 0

3 years ago

The equation that passes through (3,6) and is perpendicular to 3x - 4y = - 2

Fynjy0 [20]

Answer:

Step-by-step explanation:

We want the equation of the line that passes through (3, 6) and is perpendicular to:

$3x-4y=-2$

First, convert the second equation into slope-intercept form:

$-4y=-3x-2\Rightarrow \displaystyle y=\frac{3}{4}x+\frac{1}{2}$

So, we can see that the slope of the line is 3/4.

The slopes of perpendicular lines are negative reciprocals of each other.

Therefore, the slope of the new line is -4/3.

It passes through the point (3, 6).

We can use the point-slope form:

$y-y_1=m(x-x_1)$

Substitute:

$\displaystyle y-(6)=-\frac{4}{3}(x-3)$

Distribute:

$\displaystyle y-6=-\frac{4}{3}x+4$

Therefore:

$\displaystyle y=-\frac{4}{3}x+10$

The answer is C.

5 0

3 years ago

The holding pond at a local factory is leaking. A reporter hears that the pond leaks 157.5 gallons of contaminated water every 3

abruzzese [7]

Answer: hard

Step-by-step explanation:

4 0

3 years ago