8j - k + 14 when j = 0.25 and k = 1

Mathematics

2 answers:

Minchanka [31]2 years ago

7 0

Answer:

Step-by-step explanation:

8(0.25) - 1(1) + 14

2 - 1 + 14

1 + 14

DochEvi [55]2 years ago

4 0

Answer:

Step-by-step explanation:1

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At George Washington High School, the ratio of graduating seniors that go on to college compared to those who do not is 7 : 4. L

wolverine [178]

Hi, thank you for posting your question here at Brainly.

This problem can be solved easily by applying ratio and proportion. In this case, the ratio between those who go to college and those who do not is 7/4. Then, when there are 28 students, you can determine the number of which who don't go to college by using the 7/4 ratio value

7/4 = 28/x
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2 years ago

A regular hexagon is circumscribed about a circle with a radius of 6. Find the area of the shaded region shown. Give the exact a

Alecsey [184]

Answer:

19.58 unit²

Step-by-step explanation:

To find the area of the shaded region, we use the formula:

$A_{shaded}=A_{circle} - A_{hexagon}\\\\$

As we know that,

$A_{circle} = \pi r^2$ = $\pi 6^2$

=36πunit²

Next is to split up the hexagon into 6 regular triangles.

$A_{hexagon} = 6. A_{triangle}$

=6 x $\frac{1}{2} bh$

the base is equal to the radius i.e 6 as the triangles are regular.The height can be represented by taking one of the triangles and drawing a line down the middle.

So, the newly formed triangle is a 30°-60°90° right triangle.

(see figure 1 in attachment)

Here, a= 6/2=> 3

h= a√3 => 3√3

Substituting the required values in the formula of area of hexagon, we get

$A_{hexagon}= 6.\frac{1}{2}.6.3\sqrt{3}$ => 54√3unit²