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3 years ago

PLZ HELP

Mathematics

2 answers:

shepuryov [24]3 years ago

6 0

Reflecting the X axis flips to the left or right. -3 would become positive 3. The answer is (3, 7)

Gala2k [10]3 years ago

4 0

3 and -7 would be the answer

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A plane is an undefined term because it

igor_vitrenko [27]

No on can explain it but it has a definition.

8 0

3 years ago

The formula for the surface area of a sphere is A=4pi r*2, where r is the length of the radius. Find the surface area of the sph

g100num [7]

Answer:

Step-by-step explanation:

area=4×22/7×14²=4×22×28=2464 units²

8 0

3 years ago

For what value of k will these pairs of simultaneous equations have no solution?

yKpoI14uk [10]

Kx-3y=k
y=4x+1 ( we will put it in 1st equation )
kx - 3 (4x+1)=k
kx - 12 x - 3 =k
kx - 12 x = k+3
x(k-12) = k+3
x= $\frac{k+3}{k-12}$
Also y= $\frac{5k}{k-12}$
We can not divide with zero.
k-12=0
k=12
For k= 12 equations have no solutions.

4 0

2 years ago

Bobby decided to watch all of the movies in his

disa [49]

Answer: C. y = 10x + 15

Step-by-step explanation:

He has already watched 15 movies so that's plus 15

And now he wants to watch 10 movies per week, we don't know how many weeks so that's 'x' in this equation.

If he watches movies for x weeks that's 10 times x which is the 10x in the equation.

Hope that helped!

4 0

2 years ago

Consider a triangle with angles 30o-60o-90o, with hypotenuse of length 2. Calculate the lengths of the other 2 sides and store t

kumpel [21]

Answer:

1.00 and 1.73

Step-by-step explanation:

1) Calculating the 1st and the 2nd leg using trigonometric function sine:

$sin (30^{0})=\frac{c}{2}\Rightarrow \frac{1}{2}=\frac{c}{2}\Rightarrow 2*\frac{1}{2}=2*\frac{c}{2}\Rightarrow c=1\\sin(60^0)=\frac{b}{2}\Rightarrow \frac{\sqrt{3}}{2}=\frac{b}{2}\Rightarrow b=\sqrt{3}\Rightarrow\: b\approx \:1.73$

Once one leg is found there is another way to find the other leg, using Pythagorean Theorem too.

$a^{2}=b^{2}+c^{2}\Rightarrow 2^{2}=b^{2}+1^{2}\Rightarrow 4-1=b^{2}\Rightarrow b=\sqrt{3} b\approx 1.73$

Sides

a hypotenuse: 2.00

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b leg: 1.73

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c leg: 1.00

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4 0

3 years ago