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3 years ago

How to do splitting method of x square- 2x -8

Mathematics

2 answers:

Leni [432]3 years ago

3 0

Answer:

Hey mate

kindly see attached picture:)

hope it helped you ☺️

ale4655 [162]3 years ago

3 0

Answer:

x^2+2x+1=0

x^2+(1+1)X+1=0

x^2+X+X+1=0

X(X+1)+1(X+1)=0

(X+1)(X+1)=0

X=-1,X=-1

hope it helps :)

please mark it the brainliest!

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Someone please help me I have to show how they're similar

Sidana [21]

Angle AXD = angle CXB (vertically opposite angle)
then angle ADB = angle ABC
then angle DAB = angle BCD
I couldn't remember the name of the rule
I said that they are equal if you look at the curve AC and DB
They called them that two angles that subtended by the same mirror (arc)
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2 years ago

The observation deck of the willis tower in Chicago Illinois is 1353 feet above the ground elevators lift visitors to that level

Paul [167]

Answer: The the speed of elevators is 22.55.

Explanation:

It is given that observation deck of the willis tower in Chicago Illinois is 1353 feet above the ground elevators lift visitors to that level in 60 seconds.

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$\text{Average Speed}=\frac{\text{Total Distance}}{\text{Total Time}}$

From the given information the total distance is 1353 and the total time is 60 seconds. So by the above formula we get,

$\text{Average Speed}=\frac{1353}{60}$

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Therefore, the speed of elevators is 22.55.

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3 years ago

If a student (represented by initials) was chosen at random, find P(HH|C').

valentina_108 [34]

Answer:

3/5

Step-by-step explanation:

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2 years ago

Read 2 more answers

In triangle ABC, and C is a right angle. Find the value of the trig function find the sec(A) if C=25, B=20, A=15

asambeis [7]

Answer:

sec A = 5/4

Step-by-step explanation:

Sec of an angle is hypotenuse/adjacent side

In your problem, sec A = 25/20 = 5/4

It helps if you can draw a figure of the problem. Make sure you memorize the definition of each trig function

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2 years ago

Is this answer right?? If not what’s the real answer? I’m trying to practice for my STAAR.

Ierofanga [76]

Area of rectangle

21m^2

Area of one triangle

divide length of 7 by 2 (3.5)

gives you length b (unknown side that is not hypotenuse)

then multiply by width of triangle (4)

3.5 * 4 = 14

and in this situation there is no need to divide by two, because you essentially have one full square from both the triangles. this only works when both triangles are the same.

add the area of the rectangle

14+21= 35

35m^2

8 0

2 years ago

How to do splitting method of x square- 2x -8​

How to do splitting method of x square- 2x -8