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kirza4 [7]
3 years ago
13

-3a + 12b=24 -a+9b=6

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0
Antti entered a -kilometer race. His goal is to finish in one hour. He starts off sprinting, and completes the first  kilometers of the race at an average speed of  kilometers per hour.

To achieve his goal of a one-hour finish time, what average speed (in kilometers per hour) must Antti maintain for the last  kilometers of the race?

Enter your answer as a number in decimal form, without units.Hint(s):













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3 years ago
What is the slope of the line for (9,6) &amp; (-2,17)
denis-greek [22]
The slope is negative one
7 0
2 years ago
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What is the value of x, the side length of the smallest square (please show work) Thanks!
Ratling [72]

Answer:

8 cm

Step-by-step explanation:

Ok lets on the biggest square we have 17 cm

17cm is the hypotenuse for the right triangle

The second largest's area is 225 cm^2

Sq root of 225 cm^2, is 15

To find x, lets plug the info we have to the pythagorean theorom

a^2 + b^2 = c^2\\a^2 + 15^2 = 17^2\\a^2 + 225 = 289\\\\289 - 225 = a^2\\64=a^2\\a = 8 cm

The side length of the smallest Square is 8 cm

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If you like my answer and explanation, mark me as brainliest!

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7 0
3 years ago
Consider the following statements:
Black_prince [1.1K]

Answer:

b. I and II are both false.

Step-by-step explanation:

I. For a significance level, the two tailed hypothesis is not always accurate than the one tailed hypothesis test. The hypothesis testing is carried to find out the correctness of a claim of a population parameter. The two tail hypothesis test which used both positive and negative tails of the distribution is not always more accurate than one tailed test.

II. The process of the point estimation involves the utilization of the values of a statistic which is obtained from the sample data to obtain the best estimate of a corresponding unknown parameter in the given population.

Hence, both the statements are false.

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3 years ago
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Arlecino [84]

Answer:

y=x*7

Step-by-step explanation:

63=9*7

28=4*7

14=2*7

77=11*7

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3 years ago
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