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Ivahew [28]
3 years ago
13

PLZZZ HELP NOOOOWWW!!!

Mathematics
1 answer:
maw [93]3 years ago
4 0
Hello!

You can use the Pythagorean Theorem

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

C is the hypotenuse which is the line across the diameter
a and b are the other sides

You have to find the bottom side of the triangle

9 - 6 = 3

Put in the values you know

9^{2} + 3^{2} = c^{2}

Square the numbers

81 + 9 =  c^{2}

Add

90 =  c^{2}

take the square root of both sides

\sqrt{90} = c

The answer is C)  \sqrt{90}

Hope this helps!
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One edge of a cube measures 3.4 meters. What is the volume of the cube? Enter your answer, as a decimal, in the box.
alina1380 [7]

The formula to find the volume multiplies the length by the width by the height.A cube has all edges the same length .If we multiply the edges three times we get the volume of any cube.

Volume of cube with sides a is Volume V= a^{3}

In the question the cube is having an edge of 3.4 meters

Volume V= 3.4^{3} =(3.4)(3.4)(3.4)=39.3

Volume of cube is 39.3 cubic meters.

4 0
3 years ago
Find a unit vector that is orthogonal to both i + j and i + k.
kenny6666 [7]

Answer: i - j - k

Step-by-step explanation:

Taking the cross product between two vectors will give you a third vector that is orthogonal(perpendicular) to both vectors.

<1,1,0> x <1,0,1>

det(\left[\begin{array}{ccc}i&j&k\\1&1&0\\1&0&1\end{array}\right] )

the determinate of the matrix: <1,-(1),-1>

or: i - j - k

3 0
3 years ago
Make up an equation of the form y = kx +b, the graph of which passes through the following points: A (8, –1) and B (–4, 17)
igor_vitrenko [27]

Answer:

One equation would be y= -1.5x +11

Step-by-step explanation:

Here's a table to show the coordinates

x:             y:

8              -1

-------------------

-4             17

the x coor. 8  goes down by 12 to get to the next x coor. -4.

8-12= -4

the y coor. -1 goes up by 18 to get to the next y coor. 17.

-1+18= 17

therefore 18/-12 is -1.5 which can be your k in y=kx+b.

Check your answer.

-1.5*8= -12 but when you add 11, you get the y coor. -1

Do the same with the other x coor.

-4*-1.5= 6 + 11 =17

11 can be your b in the slope-intercept form equation.

One equation may be y = -1.5x +11

4 0
3 years ago
He is 187cm tall how many metres is this
k0ka [10]
He is one meter and 87 centimeters tall. 
6 0
3 years ago
A local charity receives 1/3 of funds raised during a craft fair and a bake sale. The total amount given to the charity was $137
g100num [7]

Answer:

$412.35

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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