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Grace [21]
3 years ago
13

Find the cosine of angle A to the nearest 100th.

Mathematics
1 answer:
Sauron [17]3 years ago
4 0

Answer:

{ \tt{ \cos(A) =  \frac{ \sqrt{700} }{40}  }} \\  { \tt{ \cos(A) = 0.66 }}

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Substitution for:<br> X-5y=10<br> 2x-10y=20
sergey [27]
Since you need an isolated variable to use the substitution method, we need to re-arrange one of the equations. This will probably be easiest to do with the first one.
Add 5y to both sides of the first equation.
x=10+5y
Now, in the second equation, put in 10+5y in any spot that has an x.
2(10+5y)-10y=20
Distribute the 2 to both numbers in the parenthesis.
20+10y-10y=20
Combine like terms.
20=20
This means that the two equations are actually the same. You can see this if you multiply the whole first equation by 2
2(x-5y=10)
2x-10y=20, which is the same as the second equation. Therefore, the two equations are actually the same one.
5 0
3 years ago
How to graph -5\3 on a number line
Alex_Xolod [135]
<span>Number line is a way of expressing an integer into a line. 
We have the given numbers:
Let x = -5
and Let y = 3

Now let’s create line with 0 in the center. Pls. see the attached image for the number line presentation.

The answer is -2</span><span>

</span>



8 0
3 years ago
What is on the HANNA ORLEANS ALGEBRA 1 (7th for 8th) PLACEMENT TEST GUIDE?
Fed [463]

Answer:

17

Step-by-step explanation:

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3 0
3 years ago
A sphere has a radius of 16 in. Which statements about the sphere are true? Check all that apply.
Wewaii [24]

Answer:

  • The sphere has a diameter of 32 in. CORRECT: the diameter of a sphere doubles its radio, so if the radio equals 16,the diameter measures the double, in this case, 32.
  • The radius' lenght is one half the length of the diameter. CORRECT: , by definition, the diameter is the maximum distance between two opposite points on the surface of the sphere, and its lenght equals twice the radius because the radius is the distance between the center of the sphere and any point of the frontier of the sphere (then, one colud imagine that the distance between two opposite points in a sphere can be united by two radius, or a diameter).
  • The volume (V) of a sphere can be calculated as \frac{4\pi r^3}{3}, where r is the radio. In this case, the volume of the sphere will be \frac{4\pi\times16^3}{3}=\frac{4\pi\times4096}{3}, which is also equal to \frac{16384\times\pi}{3}.

6 0
3 years ago
Read 2 more answers
Suzie looked at the diagram at right and wrote 134% = 134/100. Is she correct? Why or why not?
____ [38]

Answer:

yes

Step-by-step explanation:

since the numerator is higher then the denominator plus the extra amount 100/100 +34

3 0
3 years ago
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