I don’t know if it’s maximum value or minimum value and the answer too

Mathematics

1 answer:

VashaNatasha [74]10 months ago

7 0

Answer:

The minimum value is 0

Step-by-step explanation:

If there is a negative sign in front of the x^2 it is always a maximum (-x^2 goes downwards)

If the x^2 is positive it always a minimum.

You have the correct ordered pair, the minimum value is equal to the y value.

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If measure of angle 1 = 2x+6 and measure of angle 2 = 8x+4 where angles 1 and 2 are supplementary, then how much is the actual m

nlexa [21]

Answer:

The actual measure of ∠1 = 40°

Step-by-step explanation:

We are given: ∠1 = 2x+6 and ∠2 = 8x+4

and both angles are supplementary. we need to find the actual measure of ∠1

Supplementary angles: If the angles are supplementary their sum is equal to 180°

In our case ∠1 +∠2 = 180°

2x+6+8x+4=180

Solving the equation to find x, then we can find the actual measure of ∠1

$2x+6+8x+4=180\\10x+10=180\\10x=180-10\\10x=170\\x=170/10\\x=17$

So, value of x = 17

Now, finding actual measure of ∠1 by putting x=17 in equation 2x+6

$\angle1=2(17)+6\\\angle1=34+6\\\angle1=40$

So, the actual measure of ∠1 = 40°

8 0

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When mrs. myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. this means th

irina [24]

The empirical rule states that in a normal distribution,
68% of data is within 1 std deviation of the mean
95% of data is within 2 std deviation of the mean
99.7% of data is within 3 std deviation of the mean

In this case 95% of the cases would be within two std deviations of the mean
mean - 8 and mean + 8
72 - 8 = 64 and 72 + 8 = 80

then 95% of the scores are between 64% and 80% on the test.

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If you are dealt 5 cards at random from a standard deck of playing cards, what is the probability that at most 4 of them are spa

alexira [117]

Answer:

Step-by-step explanation:

No of ways in which 5 cards are chosen is $N=^{52}C_5$