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3 years ago

You spin the spinner once.

Mathematics

1 answer:

Ymorist [56]3 years ago

6 0

Answer:

0.625

Step-by-step explanation:

5 out of 8 of the sections in the circle are yellow. This means that there is a 5/8 chance of the spinner landing in a yellow section.

5/8 written as a decimal is 0.625

The answer is 0.625

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The triangle ABC in the figure provided has midpoints labeled M and N and O.

makvit [3.9K]

HoHm : B means that starting at point B, you do a half-turn about m. This puts point B where A is. Continuing, this point is again allowed to to do a half-turn but this about o so that the point ends up at C.
The answer is Point C.<span />

3 0

3 years ago

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Find the sum. 2x^2 +26x+ 156=0

Mila [183]

Answer:

-13

Step-by-step explanation:

2x²+26x+156=0

x²+13x+78=0

x²+13x=-78

x²+13x+169/4=-143/4

(x+13/2)²=-143/4

x+13/2=(i√143)/2 or x+13/2=-(i√143)/2

x=(i√143)/2-13/2 or x=-(i√143)/2-13/2

(i√143)/2-13/2+(-(i√143)/2)-13/2=(i√143-13-i√143-13)/2=-26/2=-13

5 0

3 years ago

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Suppose the scores on a test given to all juniors in a school district are normally distributed with a mean of 74 and a standard

ivann1987 [24]

Answer:

$\mu -\sigma = 66 , \mu +\sigma = 82$

$\mu -2\sigma = 58 , \mu +2\sigma = 90$

$\mu -3\sigma = 50 , \mu +3\sigma = 98$

And in the figure attached we see the limits with the percentages associated.

Step-by-step explanation:

For this case we know that the random variable of interest is the scores on a test given to all juniors in a school district follows a normal distribution with the following parameters:

$X \sim N(\mu= 74, \sigma =8)$

For this case we know from the empirical rule that within one deviation from the mean we have approximately 68.2% of the data, within 2 deviations from the mean we have 95% and within 3 deviation 99.7%

We can find the limits and we got:

$\mu -\sigma = 66 , \mu +\sigma = 82$

$\mu -2\sigma = 58 , \mu +2\sigma = 90$

$\mu -3\sigma = 50 , \mu +3\sigma = 98$

And in the figure attached we see the limits with the percentages associated.

7 0

3 years ago

Write an equation in slope-intercept form for the line that goes through points (1.4,0) and (1.-2). y= x +

Scorpion4ik [409]

Answer:

x+[1+4+0]and {1×2}

Step-by-step explanation:

can you mark me brainlist

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2 years ago

Writing Probability as a Fraction

katrin [286]

Probability=(number of specific outcomes)/(number of possible outcomes)

There are 4+2+6+5=17 total marbles so:

P(Yellow)=4/17

P(Blue)=2/17

P(Black)=5/17

P(Red)=6/17

8 0

3 years ago

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