MATHEMATICS HIGH SCHOOL

The term "precision" BEST refers to which of the following?a. whether or not a measurement is correct
b. how "close together" a set of measurements is
c. whether or not a tool for making measurements is useful
d. how close a measurement is to an accepted value for the measurement

Answers

Answer 1
Answer: d. how close a measurement is to an accepted value for the measurement
Answer 2
Answer:

the answer would be,

d.how close a measurement is to an accepted value for the measurement

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shari has 1 1/2 gallons of orange juice. She wants to serve the orange juice equally among her 12 friends. How many ounces of juice will each friend receive

Answers

I got the answer 8 ounces. First you convert the gallons into ounces. There are 64 ounces in a gallon. But then one half of a gallon equals 32 ounces. Add 32+64=96. Then divide the 96 by the 12 friends. You would get 8. And so that is the answer. I hope you found this helpful!

Xian and his cousin Kai both collect stamps, and Kai has 68 stamps. The boys recently joined different stamp collecting clubs. Xian’s club sill send him 12 new stamps per month. Kai’s club will send him 8 new stamps per month. After how many months will Xian and Kai have the same number of stamps? How many stamps will each have?

Answers

Assuming that Xian starts with 0 stamps, you set the equations equal to each other to find what month they have the same amount of stamps.

(68 from Kai's original stamps) (8 from how many per month)
(0 from Xian's original stamps) (12 from how many per month)
68+8m=0+12m
solve for m in this equation and you get 68=4m
and 68/4 = 17 months

For how many stamps each will have, you plug in 17 into m in Xian's equation (you could do either but Xian's is easier):
0+12m
0+12(17)=204
204 stamps.

Hope this helped, it was kinda long lol

Choose the symbol that will create a true sentence when m=20.100 - 2m___3m
a >
b =
c <
d ≤

Answers

100-2(20)=60
3(20)=60

B. =
   100 - 2m = 3m
100 - 2(20) = 3(20)
    100 - 40 = 60
             60 = 60
The answer is equal to B.

Find two numbers whose product is -140 and sum is -4.

Answers

\left\{\begin{array}{ccc}x\cdot y=-140\nx+y=-4& y=-x-4\end{array}\right\n\nsubstitute:\n\nx\cdot(-x-4)=-140\n-x^2-4x+140=0\n\n\Delta=(-4)^2-4\cdot(-1)+140=16+560=576;\ \sqrt\Delta=√(576)=24\n\nx_1=(4-24)/(2\cdot(-1))=(-20)/(-2)=10;\ x_2=(4+24)/(2\cdot(-1))=(28)/(-2)=-14\n\ny_1=-10-4=-14;\ y_2=-(-14)-4=14-4=10\n\nAnswer:10\ and\ -14.
{xy=-140, x+y+4=0)
(xy=-140, y=-x-4)
x=10, y=-14
x=-14, y=10

Brainliest if correct - What is the circumference of this circle? View image for full question.

Answers

Answer:

308 mm

Step-by-step explanation:

The formula for circumference of a circle is C=2\pi r

Where C is the circumference

\pi  is (22)/(7), and

r is the radius (given as 49)

Putting them into the formula, we get:

C=2\pi r\nC=2((22)/(7))(49)\nC=308

Thus, circumference = 308 mm

Answer:308

Step-by-step explanation:

C=2(22/7)(49)

C=308

Please I really need help with this question it’s due tomorrow!!

Answers

Answer:

THERE

Step-by-step explanation:

a) To determine how far each ostrich ran, we need to calculate the area under the velocity-time graph for each ostrich. Since the graph represents velocity, the area under the graph represents the distance traveled.

For Ostrich Bert:

The area under the graph can be divided into two sections: a triangle and a rectangle. The triangle's base is 3 seconds and its height is 18 m/s, so its area is (1/2) * 3 * 18 = 27 m. The rectangle has a base of 2 seconds and a height of 9 m/s, so its area is 2 * 9 = 18 m. Adding the areas together, Bert ran a total distance of 27 + 18 = 45 meters.

For Ostrich Ernie:

The area under the graph can also be divided into two sections: a triangle and a rectangle. The triangle's base is 4 seconds and its height is 12 m/s, so its area is (1/2) * 4 * 12 = 24 m. The rectangle has a base of 2 seconds and a height of 6 m/s, so its area is 2 * 6 = 12 m. Adding the areas together, Ernie ran a total distance of 24 + 12 = 36 meters.

b) To calculate the average velocity of Bert, we need to divide the total distance he ran (45 meters) by the total time it took (5 seconds). Therefore, Bert's average velocity is 45 meters / 5 seconds = 9 m/s.

c) The initial acceleration of Ernie can be determined by finding the slope of the velocity-time graph during the initial portion. From the graph, we can see that Ernie's velocity increases by 6 m/s over the first 2 seconds. Therefore, his initial acceleration is (change in velocity) / (change in time) = 6 m/s / 2 seconds = 3 m/s^2.

d) Without further calculation, we can determine that Ernie had the greatest initial acceleration. This is because Ernie's velocity increases at a steeper slope during the initial part of the graph compared to Bert's velocity. The greater the slope, the greater the acceleration. Therefore, Ernie had the greatest initial acceleration.
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