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vichka [17]
3 years ago
10

Solve each equation

Mathematics
2 answers:
bagirrra123 [75]3 years ago
4 0

Answer:

Step-by-step explanation:

Hello!

a)

- 11.5=  a

b)

b= -11 -7 = -18

c)

c+3 = 15

c = 15 -3 = 12

d)

-4d = 32

d = -32/4 = -8

MrRissso [65]3 years ago
4 0

Answer:

1 : a= 25.5

2 : b= -4

3 : c = 12

4: d = -8

Hopefully this is right !

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A line has a rise of 6 and a slope of 1/20.
natima [27]

Answer:

120

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What is the x-coordinate of the point shown in the graph? On a coordinate plane, point A is at (negative 5, negative 7).
Alinara [238K]
The x coordinate would be -5
8 0
3 years ago
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3. What is the estimated probability that teens spend less than an hour per day texting?
DaniilM [7]

Answer:

0.29

Missing Problem Statement:

The table shows the number of hours, to the nearest half hour per day, that teens spend texting according to a random  

sample of 870 teenagers aged 13–18 in a large urban city.  

Hours          0     0.5    1.0   1.5  2.0   2.5  3.0  3.5  4.0  4.5  5.0

Frequency  170  82    220  153  92   58   40    15  12   18    10

Step by Step Explanation:

First we need to find the estimated probability distribution for teens spending time texting.

For that we need,

Total sample size = 870 teenagers (as given in the problem statement)

Estimated probability distribution (Frequency*) = \frac{Frequency.Sample.Size.of.that.hour}{Total.Sample.Size}

Example:

Estimated probability distribution that teens spend 0 hours=\frac{170}{870} =0.20

Similarly,

Hours          0     0.5    1.0     1.5    2.0    2.5    3.0    3.5    4.0    4.5    5.0

Frequency*0.2  0.09  0.25  0.18  0.11  0.07  0.05  0.02  0.01  0.02  0.01

We need, estimated probability distribution that teens spend less than an hour per day, so from the above result:

<u>Estimated probability distribution of teens spending 0 hour per day =0.2 </u>

<u>Estimated probability distribution of teens spending 0.5 hour per day = 0.09 </u>

Estimated probability distribution of teens spending less than an hour per day= 0.2+0.09=0.29

4 0
3 years ago
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Jamari says the slope of the line shown is 2/3
Natali5045456 [20]

Answer: 8

Step-by-step explanation:

4/6+4/6= 8/6

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Plz help ill give u brainlist
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C. 5x+7=22 since diameter is equal to double the radius. radius=11 so diameter equals 22. then just make 5x+7 = to 22
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