All categories

2 years ago

For real for real 50 points

Mathematics

1 answer:

Alborosie2 years ago

6 0

Solution:

<u>Simplify the fraction, then solve.</u>

3⁻⁹/9 = 3⁻⁹/3²
=> 3⁻⁹⁻²
=> 3⁻¹¹

3⁻¹¹ is the simplified solution.

You might be interested in

Pls help with these questions

postnew [5]

Find x-intercept and y-intercept then you can draw the graph.

For example, the first question.

$y=-3x+2$

To find the y-intercept, x = 0

So substitute x = 0 in the equation.

$y=0+2\\y=2$

[Note]: You don't need to find the y-intercept, because from, $y=ax+b$

a is slope and b is y-intercept, you know b then you know y-intercept. For example b = 2 then y-intercept is at 2.

To find the x-intercept, y = 0

$-3x+2=0\\-3x=-2\\x=\frac{2}{3}$

Therefore, y-intercept = 2 and x-intercept = 2/3

(Try do another problems, just do the same. When you want to find the y-intercept, just look at the value of b or substitute x = 0 and When you want to find the x-intercept, just substitute y = 0 then solve for x.)

3 0

3 years ago

in a class of 147 students, 95 are taking math, 73 are taking science, and 52 are taking both math and science. if one student i

Orlov [11]

The answer would 2 per cent

7 0

3 years ago

Read 2 more answers

Any help someone....<br> (solve triangles using the law of sines)

gogolik [260]

Answer:

$B=51$ °

Step-by-step explanation:

Use the Law of Sines as follows:

$\frac{sinC}{c} =\frac{sinB}{b}$

Insert the appropriate values:

$\frac{sin100}{14} =\frac{sinB}{11}$

Isolate B. Multiply both sides by 11:

$11*(\frac{sin100}{14} )=11*(\frac{sinB}{11})\\\\\frac{11*sin100}{14} =sinB\\\\sinB=\frac{11*sin100}{14}$

Use the inverse:

$B=sin^{-1}(\frac{11*sin100}{14})$

Insert the equation into a calculator and round to the nearest degree:

$B=50.7\\\\B=51$

Angle B is 51°.

:Done

7 0

4 years ago

A rancher has 400 feet of fencing to put around a rectangular field and then subdivide the field into 22 identical smaller recta

Fudgin [204]

Answer:

Overall rectangle: 100 ft × 8 16/23 ft ≈ 100 ft × 8.696 ft

Individual pen: 8 16/23 ft × 4 6/11 ft ≈ 8.696 ft × 4.545 ft

Step-by-step explanation:

Half the fence will be used in each of the orthogonal directions to make the pen. That is, the long side of the overall rectangle will be (400 ft/2)/2 = 100 ft. The short side of the overall rectangle will be (400 ft/2)/23 = 8 16/23 ft. (There are 21 partitions between the 22 pens, and 2 end fences, for a total of 23 fence segments of the short length.)

The long (100 ft) side of the overall rectangle is divided into 22 parts by the internal partitions, so each pen will have a short dimension of 100 ft/22 = 4 6/11 ft.

_____

We know half the fence will be used in each direction because we know the total area is a quadratic function of the side length. If the long side of the overall pen is x, then the short side is (400 ft -2x)/23, and the overall area is ...

... A = x(400 ft -2x)/23

The vertex of this quadratic function is halfway between the zeros, at x = 100 ft. That is, the two long sides of the pen total 200 ft, or half the overall length of fence.

3 0

3 years ago

A convex heptagon has interior angels of 125, 155, 95, 135, 120, and 115. What is the measure of the 7th angle?

wel

Sum of those 6 angles is 745 degrees
7th angle should make it equal 900
900-745=155

3 0

4 years ago