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MA_775_DIABLO [31]
3 years ago
7

Im pretty bad with coordinates anyone wanna help with an explanation and and answer please? Ty ​

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
4 0

Answer:

About 9.4

Step-by-step explanation:

64+25=89

sqr root of 89 is 9.4339

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6x^2 + 23x + 7 NEED HELP SOLVING QUADRATIC EQUATION
luda_lava [24]

Answer:

6x2 + 23x + 7 = 0

Factorization:

(2x + 7)(3x + 1) = 0

Solutions based on factorization:

2x + 7 = 0   ⇒   x1 = −7

2

= −3.5

3x + 1 = 0   ⇒   x2 = −1

3

≈ −0.333333

Extrema:

Min = (−1.916667, −15.041667)

Step-by-step explanation: hope this helps

6 0
3 years ago
it takes 52 minutes for 5 people to paint 5 walls. How many minutes does it takr 20 people to paint 20 walls
777dan777 [17]

Answer:

208 minutes = 3.47 hours

Step-by-step explanation:

It takes each person 10.4 minutes for 1 wall. So 20 people would take 208 minutes for 20 people to paint 20 walls

52/5 = 10.4

20 x 10.4 = 208

5 0
3 years ago
Read 2 more answers
56: =24:3
dmitriy555 [2]
56:7=24:3
3x3=27:3
8x2=64:4
45:9=35:7
4x5=10x2
42:6=63:9
28:4=7x1
2x2=36:9
5 0
3 years ago
The number of text messsages that teenagers send per month is normally
ki77a [65]

Answer:

z=\frac{4415-3400}{450}=2.26

And the explanation of this number is:"The number of text messages for Kendra it's 2.26 deviations above the mean"

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

2) Calculate the z score

Let X the random variable that represent the number of text messages per month, and for this case we know the distribution for X is given by:

X \sim N(3400,450)  

Where \mu=3400 and \sigma=450

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

z=\frac{4415-3400}{450}=2.26

And the explanation of this number is:"The number of text messages for Kendra it's 2.26 deviations above the mean"

6 0
3 years ago
The sum of the three numbers in 2003,two of the numbers are 814 and 519 what is the third number​
KonstantinChe [14]

Answer:

670

Step-by-step explanation:

2003-814=1189

1189-519=670

8 0
3 years ago
Read 2 more answers
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