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Helga [31]
3 years ago
9

How do you factor x²-100 ?

Mathematics
1 answer:
Strike441 [17]3 years ago
5 0

Answer:

(x+10)(x-10)

Step-by-step explanation:

both numbers can be squared so you have to take out the square and since 100 is negative one must be positive and one must be negative

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The length of the minute hand is 150% of the length of the hour hand. In 2 hours, how much farther does the tip of the minute ha
nekit [7.7K]

The question seems incomplete, as the length of the hour hand isn't given ;

If the tip of the hour hand is taken as 30mm

Answer:

534.1 mm

Step-by-step explanation:

In 2 hours ; cycle performed :

2/ 12

Circumference of a circle = 2 * pi *r

Circumference = 2 * pi * 30 = 60pi

Distance traveled : 60pi * 2/12 = 120pi/ 12 =10pi

The minute hand travels 2 comply cycle in 2 hours

150% taller than short hand :

1.5 * 30 = 45 mm

Distance traveled : 2 (2 * pi * 45) = 180pi

(180pi - 10pi) = 170pi

170π = 534.07075

= 534.1 mm

7 0
3 years ago
Y= -3/2x-2 graph graph
evablogger [386]

Answer:

To graph (like the provided picture) you must understand y=mx+b. Your m would stand for your slope which you need to determine with rise over run. Rise over run can be done by finding a place where both the x and y values are lined up. (0,-2) can be used as an example from the picture. You then want to find the next point where the x and y values line up which (-2,1) can be used. Go up 3 units and go to the LEFT 2 times which makes this a negative run. The slope would then be represented as -3/2.

Your x value stands for your x-value moving up or down while you b value stands for your y-intercept which point (0,-2) is represented as. Y represents the y value after the equation is plugged in with x and solved.

8 0
3 years ago
Quadrilateral ABCD has the following vertices.
Marizza181 [45]
A(-5,5)
B(4,5)
C(2,0)
D(-5,-2)

AB,BC,CD,DA

AB = [4-(-5)),5-5]=[9,0]
Lenght  AB= \sqrt{9^2+0^2}= \sqrt{81}  =9

BC = [2-4,0-5]=[-2,-5]
Lenght  BC=\sqrt{(-2)^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}

CD = [-5-2,-2-0]=[-7,-2]
Lenght  CD=\sqrt{(-7)^2+(-2)^2}=\sqrt{49+4}=\sqrt{53}

DA =[-5-(-5),-2-5]=[0,-7]
Lenght DA=\sqrt{0^2+(-7)^2}=\sqrt{49}=7

sorted from longest to shortest:
AB, CD,DA,BC
\sqrt{81}, \sqrt{53}, \sqrt{49}, \sqrt{29}

3 0
2 years ago
PLEASE HELP ASAP 5TH GRADE
polet [3.4K]

Answer:

C

Step-by-step explanation:

10*(1/7)=10/7.   A and B are false.

A product comes from multiplying.   D is false.

Please mark as Brainiest! :)

Have a nice day.

7 0
2 years ago
Find the vertex of the parabola that represents a function f(x)=(x-5)^2+9
poizon [28]
(5,9) because vertex form is (x-h)^2+k and the vertex is (h,k) so it would be (5,9)
5 0
2 years ago
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