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blagie [28]
4 years ago
7

Please help me do this someone.

Mathematics
1 answer:
RUDIKE [14]4 years ago
7 0

Answer: The system of equations are;

a + b = 9 ———(1)

a + 3b = 23———(2)

Step-by-step Explanation: The variables used here are a and b. Where a represents the number of free throws and b represents the number of three-pointers.

From equation (1), what we have is the total number of shots he has taken altogether which is 9 shots in all. All 9 shots are an addition of free throws and three pointers (that is a + b).

In equation (2), what we have is the points obtainable times the number of shots taken (for each shot). This means if a is a free throw, then 1 times a is equal to number of free throws times 1. Similarly, if b is a three-point throw, then 3 times b is equal to the number of three pointers thrown times 3.

The solution to the equation above gives us,

a = 2 and b = 7

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The distribution of total body protein in healthy adult men is approximately Normal with mean 12.3 kg and standard deviation 0.1
Gelneren [198K]

Answer: a. 0.9876

Step-by-step explanation:

Given : The distribution of total body protein in healthy adult men is approximately Normal with mean 12.3 kg and standard deviation 0.1 kg.

\mu=12.3 and \sigma=0.1

sample size : n= 25

Let x denotes the  total body protein in healthy adult men in the sample.

Then, the probability that their average total body protein is between 12.25 and 12.35 kg will be :-

P(12.25

∴ The correct answer is a. 0.9876

4 0
3 years ago
Martha is late for class, so she races her 75 kg body up a 4.0 meter flight of stairs in only 2.3 seconds. What is Martha’s powe
vovangra [49]

Answer:

1.3\cdot 10^3\text{ J}

Step-by-step explanation:

Power is defined by work over time. In physics, work can be defined as the energy transferred over from an applied force over some distance. As a formula:

W=Fd, where F = force applied and d = distance that force is applied over.

*It is worth noting that F must be parallel to the distance travelled. If it is perpendicular, no work is done, and if it is at an angle, find the parallel component and use that for F.

In this case, the force applied must counter the force of gravity on Martha, which is given by F_g=mg, where m = Martha's mass and g = gravitational constant 9.8 m/s/s. Therefore, F_g=75\cdot 9.8=735\text{ N}. Since she raises her body 4.0 meters, the work done must be W=Fd=735\cdot 4=2940\text{ J}.

Since power is equal to work over time and t = 2.3 seconds, we have:

\displaystyle P=\frac{W}{t}=\frac{2940}{2.3}=\boxed{1278\text{ J}}\approx \boxed{1.3\cdot 10^3\text{ J}} (to two significant figures)

7 0
2 years ago
Help pls pointssssssssss​
shutvik [7]

Answer:

the second one i believe:)

Step-by-step explanation:

i literally just did this in algebra lol...hope this helps:))

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3 years ago
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Ann [662]

Answer:

(3, -4) or x = 3 and y = -4

Step-by-step explanation:

Hope this helps!

3 0
3 years ago
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What are the two binomial factors for x2 – 25?
Viktor [21]

Answer:

x^2 -25 = (x-5)(x+5)

Any expression of the form a^2 - b^2 = (a-b)(a+b)

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3 years ago
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