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Alla [95]
2 years ago
14

How to solve (x - 4) (x +5)

Mathematics
1 answer:
iVinArrow [24]2 years ago
3 0

Answer:

x^{2}+x  - 20

Step-by-step explanation:

(x+ -4)(x+5)

(x)(x)+(x)(5)+(-4)(x)+(-4)(5)

x^{2} + 5x - 4x - 20

Math Papa is a great app to use if you need help with algebra :)

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Answer:

$720 and $360

Step-by-step explanation:

8 0
3 years ago
43 17 30 52 61 12 21 30 11 27 for mean,median,mode,and range
tester [92]
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7 0
3 years ago
A line has a slope of -1/4 and passes through point (-5/4, 1) What is the equation of the line?
Vedmedyk [2.9K]
The line of the equation would be y = -1/4x + 11/16.

In order to find that, we'll put the ordered pair and the slope into slope intercept form. Then we can solve for the intercept. 

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7 0
2 years ago
Factorise fully the following:<br> a) 3x^3-9x<br> b) 4x^2+28^3
Leokris [45]

Answer:

3 x(x^2-3)

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Step-by-step explanation:

3 0
2 years ago
A right triangle has legs that measure 7 cm and 6 cm. What is the length of the hypotenuse in meters?
dalvyx [7]
<h2>Greetings!</h2>

Answer:

\sqrt{85}  or 9.22

Step-by-step explanation:

You need to remember the following equation:

a^{2} + b^{2} = c^{2}

Where a and b is the lengths of the two sides and c is the hypotenuse.

So simply plug these values into this:

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So the hypotenuse is the square root of 85:

\sqrt{85}  = 9.22


<h2>Hope this helps!</h2>
7 0
2 years ago
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