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Lesechka [4]
3 years ago
5

Determine the number of real solutions of 7x2 – 18x + 12 = 0.

Mathematics
1 answer:
Ahat [919]3 years ago
6 0

Answer:

x=9/7 +i\sqrt{3/7 , 9/7 - i\sqrt3/7

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Express the area of the rectangle in term of x
aalyn [17]

Answer:

Area = 12-\frac{4}{35}x

Step-by-step explanation:

Length of the given rectangle 'l' = (15 - \frac{1}{7}x)

Width of the given rectangle 'w' = \frac{4}{5}

Area of the rectangle = lw

                                    = \frac{4}{5}(15-\frac{1}{7}x)

                                    = \frac{4\times 15}{5}-\frac{4}{5}\times \frac{1}{7}x

                                    = 12-\frac{4}{35}x

Therefore, expression that defines the area of the given rectangle will be,

Area = 12-\frac{4}{35}x

4 0
3 years ago
Can you solve 35÷5+56÷7
VLD [36.1K]
Order of operations

first divide, than add

35/5 = 7
56/7 = 8

7 + 8 = 15

15 is your answer

hope this helps
8 0
4 years ago
Read 2 more answers
Please help me!!!<br> Will give 100 points.<br> Will give BRAINILEST
Oksana_A [137]

Step-by-step explanation:

The shape of the new pizza must meet the conditions:

  • Be an irregular polygon (different sides and/or angles).
  • Have at least five sides.
  • Have the approximately the same area as a 14" diameter circle.
  • Fit in a 14⅛" × 14⅛" square.
  • Be divisible into 8-12 equal pieces.

For simplicity, I will choose a polygon with 5 sides (a pentagon), and I will use 2 right angles (a "house" shape).

Split the pentagon into a rectangle on bottom and triangle on top.  If we cut the rectangle into 8 pieces like a regular pizza, and the triangle in half, we get 10 triangles.

Now we just need to figure out the dimensions.  The area of a 14" circular pizza is:

A = πr²

A = π (7 in)²

A ≈ 154 in²

That means the area of each triangle slice needs to be 15.4 in².  If we make the total width of the pentagon 14", then the width of each triangle is 7", and the height of each triangle is:

A = ½ bh

15.4 in² = ½ (7 in) h

h = 4.4 in

Which makes the total height of the pentagon 3h = 13.2 in.

So, our 13.2" × 14" pentagon has at least 5 sides, is irregular, has the same area as a 14" diameter circle, fits in a 14⅛" × 14⅛" square, and can be divided into 8-12 equal pieces.

Of course, there are many possible solutions.  This is just one way.

3 0
3 years ago
Read 2 more answers
Stephen earned scores of 88 points, 94 points. 89 points, and 85 points on four tests.
Inessa05 [86]

answer

94

set up equations

average = total points / number of tests

total points = test1 + test2 + test3 + test4+ test5

total points = 88 + 94 +89 + 85 + test5

total points = 356 + test5

plug total points into first eqation and rearrange

average = total points / number of tests

average = (356 + test5)/number of tests

average * number of tests = 356 + test5

test5 = average * number of tests - 356

plug in values for average and number of tests

test5 = average * number of tests - 356

test5 = 90 * 5 - 356

test5 = 94

3 0
3 years ago
Which of the following graphs would represent the solution set for y &gt; 4/5 x – 1?
Keith_Richards [23]

It's this graph. You didn't give me any options in the question.

6 0
3 years ago
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