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mars1129 [50]
3 years ago
13

Help me please i can't understand this:(​

Mathematics
2 answers:
Alex777 [14]3 years ago
8 0

Answer:

let me know the questions ill see if i can help

Step-by-step explanation:

sweet [91]3 years ago
7 0

Answer:

Where is a questionn? How can I answer you if you don't have a question

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which equations represent the line that is perpendicular to the line 5x - 2y = -6 and passes through the point (5, -4) select al
NARA [144]

Answer:

the answers are A B AND D

Step-by-step explanation:

To find perpendicular lines you take the slope and change the sign and find the reciprocal. after doing that you set it up as a new equation that you will use to find b using the point.

in this case

y= - 2/5x +b

plug in the x and y values of the point (5, -4) to find b

b= -2

you put that together to get the equation

8 0
3 years ago
A physical fitness association is including the mile run in its secondary-school fitness test. The time for thisevent for boys i
valentina_108 [34]

Answer:  0.0107

Step-by-step explanation:

Given : The time for the event for boys in secondary school is known to possess a normal distribution with

\mu=460\text{ seconds}\\\\\sigma=20\text{ seconds}

Let x be the random variable that represents the time for mile run in its secondary-school fitness test.

z-score : \dfrac{x-\mu}{\sigma}

z=\dfrac{322-460}{60}=-2.3

Now, the probability that a randomly selected boy in secondary school can run the mile in less than 322 seconds is given by :-

P(x

Hence, the probability that a randomly selected boy in secondary school can run the mile in less than 322 seconds = 0.0107

6 0
3 years ago
What is the value of x?
elena-14-01-66 [18.8K]
The median has the property of being equal to 1/2 the length of the 2 parallel lines in a trapezoid. In this case. 1/2 [(x + 8) + (5x + 4)] = 24 There is your equation. Now all you have to do is solve it.

1/2 (x + 8 + 5x + 4) = 24 I've removed the inner brackets.
1/2 (6x + 12) = 24 Gathered like terms.
(6x + 12) = 24*2 Multiplied both sides by 2
6x + 12 = 48 removed the brackets.
6x = 48 - 12 subtracted 12 from both sides.
6x = 36 Divide by 6
x = 36/6
x = 6

6 <<< answer.
6 0
3 years ago
The height of a cone-shaped statue is 9 ft, and the diameter is 4 ft.
bogdanovich [222]
<span>37.7
The formula is </span>V=<span><span>π<span>r^2*</span></span><span>h/3, and since r is 4/2, you multiply it by </span></span><span><span>π and then multiply it h/3, which is 9/3, so ((2*3.14)*3)= 37.7.</span></span>
5 0
3 years ago
Hi I would really iike if someone helped me with this homework that I have I don't understand. an aquarium in the shape of a par
Radda [10]

170^3 this is the answer just make sure you do you're work.

7 0
3 years ago
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