I NEED HELP ☹️☹️!!!!!!

borishaifa [10]

You can solve <span>9/x-4/y=8 for x or for y but NOT at the same time.

Solving for x: </span><span>9/x-4/y=8 Mult all 3 terms by xy to eliminate the fractions.

9(xy)/x - 4xy/y = 8xy => 9y - 4x = 8xy, or 9y = 4x + 8xy = 4x(1+2y)

then 9y = x [ 4(1+2y) ]
9y
therefore x = ------------
4(1+2y)

Solve for y using a similar approach.

</span>

7 0

3 years ago

What is the vertex of the graph of g(x)=|x-3|-3

Sedbober [7]

Answer:

(3, -3)

Step-by-step explanation:

The vertex of the most general absolute value function is y = |x|, whose vertex is at (0, 0). Focusing on the " |x - 3| " tells us that the graph of y = |x| is moved 3 units to the right. Next, focusing on the " -3 " as it tells us that the resulting graph is shifted 3 units down. Thus, the vertex of g(x)=|x-3|-3 is at (3, -3).

3 0

3 years ago

Divide £72cm in the ratio 2:3:1 working out please

ale4655 [162]

2:3:1
2+3+1 = 7

£72 / 7 = £10.28

Answer:
£10.28 * 2 = £20.56
£10.28 * 3 = £30.84
£10.28 * 1 = £10.28

If you want to check if it's correct. add all three of them and see if you get the £72.

Please make this answer the brainiest!

4 0

3 years ago

What is the area of the composite figure? (6π 4) cm2 (6π 16) cm2 (12π 4) cm2 (12π 16) cm2

raketka [301]

The area of the considered composite figure is given by: Option: 6π + 16 cm²

<h3>How to calculate the surface area of a composite figure?</h3>

Surface area are derived for some standard shapes like circle, triangle, parallelogram, rectangle, trapezoid, etc.

When some shape comes which isn't standard figure, then we find its area by slicing it (virtually, like by drawing lines) in standard shapes. Then we calculate those composing shapes' area and sum them all.

Thus, we have:

$\text{Area of composite figure} = \sum (\text{Area of composing figures})$

That ∑ sign shows "sum"

For this case, the missing image is attached below.

As visible, the area of the figure = Sum of area of those 3 semi circles + Area of that square(its square because it has 4 equal sides in which adjacent sides are perpendicular) in between.

The side of the square is of 2+2=4 cm( as half of its side is 2 cm), thus, Area of that square = 4² = 16 cm²

All those 3 semicircles has radius = 2 cm

Since radius is same, so area of those 3 semicircle is same = $\dfrac{\pi r^2}{2} = \dfrac{\pi (2)^2}{2} = 2 \pi\: \rm cm^2$

Thus, we get:

Area of the composite figure = $2 \pi +2 \pi +2 \pi + 16 \: \rm cm^2 = 6 \pi+ 16 \: \rm cm^2$

Learn more about area of a composite figure here:

brainly.com/question/10254615

6 0

2 years ago

One of the assumptions we sometimes need to make when performing statistical inferences is that the response variable in the pop

Ainat [17]

Answer:

One of the assumptions we sometimes need to make when performing statistical inferences is that the response variable in the population has a Normal distribution. Is it possible to check that this assumption is satisfied?

Statement A is correct

Step-by-step explanation:

When performing statistical inferences, one of the assumptions often made is that the response variable in the population has a normal distribution.

Since we do not have the whole population, the above assumption cannot put to a check.

However, the t distribution is robust to modest departures from normality, thus it can be used, if there are no major outliers in the plot of the data.

Therefore, statement A is correct.

3 0

3 years ago