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Bad White [126]
3 years ago
10

I need help with thiissss

Mathematics
2 answers:
sweet [91]3 years ago
7 0

Answer:

B I believe but I'm not 100%

mash [69]3 years ago
3 0

Answer:

25°

Step-by-step explanation:

Angles on a straight line equal 180°, so 180-155=25

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Even though the elimination method is easy I still have trouble with it
kicyunya [14]

Answer:

(1,2)

Step-by-step explanation:

x+4y = 9

2x -4y= -6

Add the equations together

x+4y = 9

2x -4y= -6

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

3x +0y = 3

3x=3

Divide by 3

3x/3 = 3/3

x=1

Now find y

x+4y = 9

1 +4y =9

Subtract 1 from each side

4y = 8

Divide by 4

4y/4 = 8/4

y =2

6 0
3 years ago
The diagonals of a rhombus are 12 in. and 16 in. long. The length of a side of the rhombus is 10 in. What is the height of the r
iris [78.8K]
If d₁ and d₂ are the lengths of the diagonals, the area is given by
.. A = (1/2)*d₁*d₂
.. A = (1/2)*(12 in)*(16 in)
.. A = 96 in²

If b is the base and h is the height, the area is given by
.. A = b*h
We know the values of A and b, so
.. 96 in² = (10 in)*h
.. (96 in²)/(10 in) = h = 9.6 in

The height is 9.6 in.
3 0
2 years ago
10. When a rubber ball is dropped from a height, h cm on to a flat concrete floor, it rebounds to 3 5 h cm a height of Given a r
Xelga [282]

Step-by-step explanation:

Let the height above which the ball is released be H

This problem can be tackled using geometric progression.

The nth term of a Geometric progression is given by the above, where n is the term index, a is the first term and the sum for such a progression up to the Nth term is

To find the total distance travel one has to sum over up to n=3. But there is little subtle point here. For the first bounce ( n=1 ), the ball has only travel H and not 2H. For subsequent bounces ( n=2,3,4,5...... ), the distance travel is 2×(3/4)n×H

a=2H..........r=3/4

However we have to subtract H because up to the first bounce, the ball only travel H instead of 2H

Therefore the total distance travel up to the Nth bounce is

For N=3 one obtains

D=3.625H

7 0
2 years ago
It takes Andre 4 minutes to swim 5 laps.
soldier1979 [14.2K]

It takes Andre 1.25 minutes to swim a lap.

6 0
2 years ago
Read 2 more answers
Find the value of (-3/8) x (+8/15
Mekhanik [1.2K]

\frac{ - 3}{8}  \times  \frac{8}{15}  \\  \\  = \frac{  \cancel{- 3}}{ \cancel8}  \times  \frac{ \cancel8}{ \cancel{15}} \\  \\  =  -  \frac{1}{5}

Hope This Helps ~

8 0
1 year ago
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