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Marianna [84]
2 years ago
8

Answer plzzz!!!!!!!!!!!

Mathematics
1 answer:
prisoha [69]2 years ago
7 0

Answer:

110

Step-by-step explanation:

Know the angle for BCD which is 130.

Subtract 180 from 130 and you get angle c for the triangle which is 50

Already knowing B and C, add them both which comes up to 70

All triangle angles equal 180 so subtract 70 for 180 and you get 110

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ozzi

Answer:

Derrick mistakenly combined the numbers adding it together but the numbers are not the same value to be combined. You cannot add yards and ft together.

Width = 55ft

Area = 4950 sq ft

Cost = $9900

Step-by-step explanation:

Derrick mistakenly combined the numbers adding it together but the numbers are not the same value to be combined. You cannot add yards and ft together.

You have to convert the yards to ft to add it to the other ft.

1 Yard = 3 ft

So the width is  18 yards 1 ft = 54ft + 1ft = 55ft

To calculate the  area is L x W

The length is 30 yards. Convert that to ft = 90ft

So 90 x 55 = 4950 sq ft

At $2 per sq ft, you multiply the 4950 sq ft by $2

2 x 4950 = $9900

4 0
3 years ago
Can someone find the sum?
viktelen [127]
X^2 + x + 1 + 3x^2 + 3x + 2. Just combine the like terms:

x^2 + 3x^2 + x + 3x + 1 + 2

4x^2 + 4x + 3. <--- the sum.
5 0
3 years ago
Read 2 more answers
Find the distance between the points.<br> (r, s) and (0, 0)
zhenek [66]

Answer:  \sqrt{r^2+s^2

=====================================================

Reason:

Plot the points (0,0) and (r,s). You can place (r,s) anywhere you want.

Connect the two points mentioned and form a right triangle such that the segment from (0,0) to (r,s) is the hypotenuse of said right triangle.

The horizontal leg has a length of r-0 = r units, while the vertical leg will be 's' units.

Check out the diagram below.

We then apply the pythagorean theorem to say r^2+s^2 = h^2 where h is the hypotenuse. Solving for h gets us h = \sqrt{r^2+s^2}. We only focus on the positive square root since a negative hypotenuse makes no sense.

Since we made the hypotenuse the segment with endpoints (r,s) and (0,0), this means the hypotenuse length and the distance are the same thing.

Therefore, the distance from (r,s) to (0,0) is \sqrt{r^2+s^2}

As an alternative, you can use the distance formula to get the same answer. The distance formula is effectively the pythagorean theorem phrased a different way.

5 0
2 years ago
Mary invests £1200 in a savings account. The account pays 1.5% compound interest per year. Work out the value of her investment
lara31 [8.8K]

Answer:

CI=P[(1+r/100)^n-1]

=1200[(1+1.5/100)^2-1]

=1200*0.030225

=36.27

8 0
2 years ago
What is eleven times a number X, minus a second number Y.
kkurt [141]

Eleven times a number X, minus a second number Y

So, The algebraic equation formed with this data is;

<h3>X×11-Y</h3>
5 0
3 years ago
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