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Fed [463]
3 years ago
8

The table shows the results of a survey on the number of text messages per month for people of different ages. Based on this sur

vey, what is the probability that a person texts over 50 messages per month given that the person is between the ages of 23 and 60? A) 157/229 B) 157/312 C) 157/384 D) 157/456​

Mathematics
2 answers:
Llana [10]3 years ago
6 0

Answer:

the answer should be c

Rzqust [24]3 years ago
4 0

Answer:C

Step-by-step explanation:I took the test got a

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the difference between seven times one number and three times a second number is 25. The sum of twice the first and five times t
inysia [295]
\left \{ {{7*x - 3*y=25} \atop {2*x + 5*y=95}} \right.

\left \{ {{7x - 3y=25}(I) \atop {2x + 5y=95}(II)} \right.

\left \{ {{7x - 3y=25}simplify*(5) \atop {2x + 5y=95}simplify*(3)} \right.

\left \{ {{35x - \diagup\!\!\!\! 15 y=125} \atop {6x + \diagup\!\!\!\! 15y=285}} \right.

\left \{ {{35x =125} \atop {6x =285}} \right.

41x = 410

\boxed{x=10}

<span>Replace the value of "x" in the second equation (II) to find the value of "y", thus:
</span>2x + 5y=95
2*(10)+5y = 95
20+5y=95
5y=95-20
5y=75
y =  \frac{75}{5}
\boxed{y=15}


The numbers (10,15)

5 0
3 years ago
What is the midpoint of the coordinate F( -2, 4) and G(6, 1)
Marrrta [24]

Answer:

\huge\boxed{\left(2; 2\dfrac{1}{2}\right)}

Step-by-step explanation:

\text{The formula of a midpoint:}\\\\M\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)\\\\\text{We have the points}\ F(-2,\ 4),\ G(6,\ 1).\\\\\text{Substitute:}\\\\M_{FG}\left(\dfrac{-2+6}{2};\ \dfrac{4+1}{2}\right)\to M_{FG}\left(\dfrac{4}{2};\ \dfrac{5}{2}\right)\to M_{FG}\left(2; 2\dfrac{1}{2}\right)

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. The AutoCorrect feature can automatically capitalize the first letter in the names of days.
Vinvika [58]
True. The AutoCorrect feature can automatically capitalize the first letter in the names of days.
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3 years ago
What is the value of x?
Gnoma [55]

Answer:

58

Step-by-step explanation:

alaphabet u right

4 0
3 years ago
PLEASE HELPPPPPP<br> The perimeter is 50 ft and the length is 15 ft.<br> What's the width?
SVEN [57.7K]

Answer:

10

Step-by-step explanation:

I assume it's a rectangle, therefore:

P = 50

a = 15 ft

b = ?

P = 2a + 2b

50 = 2 * 15 + 2b

50 = 30 + 2b

2b = 50 - 30

2b = 20

b = 10

8 0
3 years ago
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