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d1i1m1o1n [39]
3 years ago
11

Vera

Mathematics
2 answers:
Maurinko [17]3 years ago
6 0
2/5 of 100 would be 40%
1/9 an hour would be 1/9 x 40 % = 4.44% every hour
Total hours left would be 40% / 4.44%= 9.0009 = 9 hours
lidiya [134]3 years ago
4 0

Answer:

18/5 hours

Step-by-step explanation:

If Vera's phone has a battery life of 2/5 and it drains 1/9 every hour we can determine how much per hour her battery drains.

f the battery drains 1/9 per hour we know how much it drains per hour. To get the time is takes for 2/5 battery life to drain we can say 2/5 divided by 1/9.

=(2/5)/(1/9)=(2/5)*(9/1)

We have 5 and 1 at the bottom of the line  and 9 and 2 at the top of the line. We can simplify:

=18/5

It takes 18/5 hours for Vera's battery to last

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Measure the following angles using a protactor and classify them as acute, obtuse, or right angle/s.
vitfil [10]

Answer:

acute right  acute obtuse obtuse acute

Step-by-step explanation:

8 0
2 years ago
ABCD is a parallelogram. Find the values of x and y. Solve for the value of z, if z=x−y.
slava [35]

Answer:

C

Step-by-step explanation:

Parallel and opposite sides of a parallelogram are equal. Hence, we can say:

x + 30 = 2x - 10

and

2y-10 = y +10

Solving first one, we get:

x + 30 = 2x - 10

30+10 = x

x = 40

Also

2y - 10 = y + 10

y = 10 + 10

y = 20

Now, z = x - y, so

z = 40 - 20 = 20

Answer C is right.

3 0
3 years ago
Determine the constant of proportionality in each of the representations below.
cluponka [151]

Answer:

Pretty sure is 15

Step-by-step explanation:

90 divided by 6 is 15.

7 0
3 years ago
Read 2 more answers
) Find the coordinates of the point A' which is the symmetric point
soldier1979 [14.2K]

Let, coordinate of point A' is (x,y).

Since, A' is the symmetric point  A(3, 2) with respect to the line 2x + y - 12 = 0.​

So, slope of line containing A and A' will be perpendicular to the line 2x + y - 12 = 0 and also their center lies in the line too.

Now, their center is given by :

C( \dfrac{x+3}{2}, \dfrac{y+2}{2})

Also, product of slope will be -1 .( Since, they are parallel )

\dfrac{y-2}{x-3} \times -2  = -1\\\\2y - 4 = x - 3\\\\2y - x = 1

x = 2y - 1

So, C( \dfrac{2y -1 +3}{2}, \dfrac{y+2}{2})\\\\C( \dfrac{2y + 2}{2}, \dfrac{y+2}{2})

Also, C satisfy given line :

2\times ( \dfrac{2y + 2}{2})  + \dfrac{y+2}{2} = 12\\\\4y + 4 + y + 2 = 24\\\\5y = 18\\\\y = \dfrac{18}{5}

Also,

x = 2\times \dfrac{18}{5 } - 1\\\\x = \dfrac{31}{5}

Therefore, the symmetric points isA'(\dfrac{31}{5}, \dfrac{18}{5}) .

7 0
2 years ago
20 POINTS!!!! Which best describes the relationship between the successive terns in the sequence shown ? The common difference i
olga2289 [7]
The common difference is -10
4 0
3 years ago
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