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Inessa [10]
3 years ago
11

Please help for solve this question

Mathematics
1 answer:
Schach [20]3 years ago
5 0
You set up the problem correctly, just keep going.

Expand out your expression:

2x(3x-9) + 4x(x+13)
= 6x^2 -18x + 4x^2 + 52x 
= 10x^2 +34x

Remember that the above expression is the area, so it is equal to 24.

10x^2 + 34x = 24
10x^2 + 34x - 24 = 0     (divide by 2)
5x^2 + 17x - 12 = 0

Done.
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In a rhombus whose side measures 36 and the smaller angle is 32°, find the length of the larger diagonal, to the nearest tenth.
Anvisha [2.4K]
Given side length "a" and angle "A", calculate the diagonals<span><span>
p = square root [( 2a^2 - 2a^2 cos(A) )]
</span>q = </span><span>square root [( 2a^2+ 2a^2 cos(A) )]</span>
http://www.calculatorsoup.com/calculators/geometry-plane/rhombus.php

side = 36
cos (32) = 0.84805
p = <span>small diagonal = </span> <span> <span> <span> 19.8457652914 </span> </span> </span> <span><span> </span> </span>
q = large diagonal = <span> <span> <span> 69.2108777578 </span> </span> </span>


3 0
4 years ago
Write the equation of the lines resented below in slope-intercept form
scoray [572]

Slope intercept form: y = mx + b

mx = slope

b = y-intercept

We know the y intercept is 0, so nothing will be written there.

To find the slope of this line, we can use the slope formula.

\frac{y.2 - y.1}{x.2 - x.1} = m

We'll use the points (1, 0) and (3, 1) to find the slope.

Now we can just plug these values into the equation to find the slope.

1 - 0 / 3 - 1

1 / 2

The slope of the line is 1/2, or 0.5.

The slope-intercept form of this line can be written as:

y = 0.5x

6 0
3 years ago
A circle has a radius of 5 centimeters. What is the area?
schepotkina [342]

Answer:

25\pi

Step-by-step explanation:

The formula for the area of a circle is A=\pi r^{2}, r is your radius, A is your area, and π is pi (3.1415...). You plug in your radius, or 5 into r, square it, 25, and multiply it by pi. You may be asked to use a certain number of digits of pi, and in that case you multiply for example 3.14 by 25, however 25\pi is the exact answer.

6 0
2 years ago
16= how many ones?<br> 817= how many hundreds/ones ?<br> Thanks <br> I need ASAP homework
Mice21 [21]
16= 6 ones or 16 ones
817= 8 hundreds and 7 ones or 17 ones

Hope this helps! :D
6 0
3 years ago
On which number line are -3 and its opposite shown?
netineya [11]

Answer:

it would be 3

Step-by-step explanation:

your welcome

7 0
4 years ago
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