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Lunna [17]
3 years ago
9

What is the answer to -1 = -5/2 (-2) + 4

Mathematics
1 answer:
Klio2033 [76]3 years ago
7 0

Answer:

it's false

the true is -1/2

Step-by-step explanation:

-5/2-2+4=-1/2

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Brrunno [24]
Yes you did do this correctly
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The average and standard deviation of a measurement is 15.0 ± 5.0. if 100 students measured the value, how many would you expect
AURORKA [14]

Solution: We are given:

\mu=15, \sigma=5

Using the empirical rule, we have:

\mu \pm \sigma covers 68% of data.

Also the percentage of values below mean = Percentage of values above mean = 50%

Now, let's find the z score for x=20

z=\frac{20-15}{5}=1

Therefore, the percentage of values greater than 1 standard deviation above mean 50\% - \frac{68\%}{2} =50\%-34\%=16%

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4 0
3 years ago
How many and what type of solutions does 7x^2−4x+3 have? 1 rational solution 2 rational solutions 2 irrational solutions 2 nonre
Gre4nikov [31]

Answer:

2 non real solutions.

Step-by-step explanation:

We need to use discriminant,

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The discriminat is b²-4ac

If the discriminant is,

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→ equal to 0, then 1 real solutions

→ more than 0, then 2 real solutions

Given that,

7x²−4x+3=0

a=7, b=-4, and c=3

→ (-4)²-4(7)(3)

→ 16-84

→ -68

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7 0
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Darius has a 24-ounce sports drink he drinks 18 ounces
katovenus [111]
Answer: 6 ounces

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