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Irina-Kira [14]
3 years ago
9

If question 7, how do you solve for the angles

Mathematics
1 answer:
ladessa [460]3 years ago
8 0
ABC is same as FDE
so AC = FE  = 5ft
angle B = 28 deg
angle C = 90 deg
so A = 180 - B - C = 62

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the width of a rectangle is 12 less than twice the length, and the area of the rectangle is 270m^2 what is the length of the rec
Goshia [24]
<h2>Greetings!</h2>

Answer:

15m

Step-by-step explanation:

Well, this can be shown using an equation:

2x- 12 = equation for width

x = equation for length

The area for a rectangle is width x length so:

(2x - 12) * x = 270

2x^2 - 12x = 270

Make the equation a quadratic:

2x² - 12x - 270 = 0

(÷2) = x² - 6x - 135

Now you need to find what values multiply to -135 and add to -6, in this case it is +9 and -15

(x + 9)(x - 15)

So x = -9 and x = 15

<h3>The length has to be 15 because the length cannot be a negative, so the length of the rectangle is 15m!</h3>
<h2>Hope this helps!</h2>
6 0
4 years ago
I used a calculator and have solved it without. I didn't get any of these answers. HELP
Andreas93 [3]

Answer:

-9 + 7√5.

Step-by-step explanation:

(3 - √5)(2 + 3√5)

= 3(2 + 3√5) - √5(2 + 3√5))

= 6 + 9√5 - 2√5 - 15

= -9 + 7√5.

6 0
3 years ago
What is the measure of Arc AB.
kow [346]

Answer:

65°

Step-by-step explanation:

plz if I'm right follow me and Mark me as brainliest

3 0
3 years ago
6 + (-9) - (-4) - 3 <br> help
Grace [21]

<em>Hi</em><em>!</em>

<em>Answer</em><em>:</em>

<em>6</em><em> </em><em>+</em><em> </em><em>(</em><em>-9</em><em>)</em><em> </em><em>-</em><em> </em><em>(</em><em>-4</em><em>)</em><em> </em><em>-</em><em> </em><em>3</em><em> </em><em>=</em>

<em>=</em><em> </em><em>6</em><em> </em><em>-</em><em> </em><em>9</em><em> </em><em>-</em><em> </em><em>b</em><em> </em><em>(</em><em>-4</em><em>)</em><em> </em><em>-</em><em> </em><em>3</em>

<em>=</em><em> </em><em>6</em><em> </em><em>-</em><em> </em><em>9</em><em> </em><em>+</em><em> </em><em>4b</em><em> </em><em>-</em><em> </em><em>3</em>

<em>=</em><em> </em><em>-6</em><em> </em><em>+</em><em> </em><em>4b</em>

<em>=</em><em> </em><em>4b</em><em> </em><em>-</em><em> </em><em>6</em>

<em>I hope I helped you! Good luck at school! </em>

7 0
3 years ago
Simplify (2d+3) + (3d-12)
8_murik_8 [283]

Answer:

5d-9

Step-by-step explanation:

add the two sides together. the parentheses don't do anything to the equation really

3 0
3 years ago
Read 2 more answers
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