All categories

3 years ago

8x+4= I just need the answer

Mathematics

2 answers:

Zigmanuir [339]3 years ago

5 0

this equation is unanswerable, there is no way to find x.

Step-by-step explanation:

faltersainse [42]3 years ago

5 0

You can’t solve this, nothing would make sense

You might be interested in

A spinner with 3 sectors is shown in the figure below. The measures of the central angles of the red, white, and blue sectors, i

RideAnS [48]

Given that a spinner with 3 sectors. The measures of the central angles of the red, white, and blue sectors, in that order, are in the ratio 2:3:4.

So we can write:

Measure of the central angle of the red sector = 2x

Measure of the central angle of the white sector = 3x

Measure of the central angle of the blue sector = 4x

We know that sum of central angle of the circle is 360 degree so the sum of above three angles will also be 360 degree

2x+3x+4x=360

9x=360

x=40

Then measure of the central angle of the red sector = 2x=2*40= 80 degree

Measure of the central angle of the white sector = 3x=3*40=120 degree

Measure of the central angle of the blue sector = 4x=4*40=160 degree

We have to find the probability for red sector so first we need to find are of the red sector which is given by formula :

$Area = \frac{\pi r^2 \theta}{360}$ , where r is the radius of the spinner.

$Area = \frac{\pi r^2 *80}{360}$

$Area = \frac{2 \pi r^2}{9}$

Area of the spinner is circular so that is given by

Area of spinner $= \pi r^2$

Now the probability that the arrow stops in the red sector is given by ratio or area of red sector and the area of spinner

Probability $= \frac{\frac{2}{9}\pi r^2}{\pi r^2}$

Probability $= \frac{\frac{2}{9}}{1}$

Probability $= \frac{2}{9}$

Hence required probability is 2/9.

5 0

4 years ago

Help plsssssssss I needed help

padilas [110]

Answer:

Step-by-step explanation:

place a point at (0,0)- the starting point

next point at (2,1) - in 2 minutes she is 1 block away

Next point (4,2)- in 4 minutes she will be 2 blocks away

Connect those 3 points

then place a point at (9, 2)- 5 minutes later she was still at the store

Connect points

Point at (11,1) and (12,0) and connect

5 0

3 years ago

X 2 +y 2 +4x−2y=−1space, x, start superscript, 2, end superscript, plus, y, start superscript, 2, end superscript, plus, 4, x, m

stepan [7]

The radius is 2.

We will rewrite this equation in center-radius form,
(x-h)²+(y-k²)=r²

where (h, k) is the center of the circle and r is the radius.

In order to do this, we will need to complete the square. We will first rewrite this with the x terms grouped together and the y terms grouped together:
x²+4x+y²-2y = -1

To complete the square for the x terms, we divide the coefficient b (as in bx) by 2:

4/2 = 2

Now we square this:
2²=4

We will add this to both sides of the equation (in order to maintain balance, we must add it to both sides):
x²+4x+4+y²-2y=-1+4
x²+4x+4+y²-2y=3

We have completed the square for the x terms. When we divided b by 2, that gave us the number we need, 2:
(x+2)²+y²-2y=3

Now we will do the same thing for the y terms. The b for our y terms is -2:

-2/2 = -1
(-1)²=1

So we will add 1 to both sides, and use -1 in the finalized form:
(x+2)²+y²-2y+1=3+1
(x+2)²+(y-1)²=4

We can see that the center would be located at (-2, 1) and the radius is √4=2.

6 0

3 years ago

How many ways can a committee of 3 people be chosen from a group of 17 people

ruslelena [56]

Answer:

680 ways

Step-by-step explanation:

17 C 3 17!/(14!3!) = 680 ways

3 0

2 years ago

Prove that the Greatest Integer Function f: R -> R given by f(x) = [x], is neither one-once nor onto, where [x] denotes the g

Karo-lina-s [1.5K]

F: R → R is given by, f(x) = [x]
It is seen that f(1.2) = [1.2] = 1, f(1.9) = [1.9] = 1
So, f(1.2) = f(1.9), but 1.2 ≠ 1.9
f is not one-one

Now, consider 0.7 ε R
It is known that f(x) = [x] is always an integer. Thus, there does not exist any element x ε R such that f(x) = 0.7

So, f is not onto
Hence, the greatest integer function is neither one-one nor onto.

The answer was quite complicated but I hope it will help you.

8 0

4 years ago