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goblinko [34]
2 years ago
5

Matthew thought he could make 19 free throws, but he only made 13. What was his percent error? Hint: Percent error = Prediction

- Actual Actual x 100 Round to the nearest percent. [ ? 1% Matthew thought he could make 19 free throws , but he only made 13 . What was his percent error ? Hint : Percent error = Prediction - Actual Actual x 100 Round to the nearest percent . [ ? 1 %​
Mathematics
1 answer:
Inessa05 [86]2 years ago
4 0

Answer:

\huge\boxed{\sf 46.2\%}

Step-by-step explanation:

Prediction = 19 throws

Actual = 13 throws

<h3><u>Percent Error:</u></h3>

\displaystyle =\frac{Predication -Actual}{Actual} \times 100 \%\\\\= \frac{19-13}{13} \times 100 \%\\\\= \frac{6}{13} \times 100 \%\\\\= 0.462 \times 100 \%\\\\= 46.2\%\\\\\rule[225]{225}{2}

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Element X decays radioactively with a half life of 13 minutes. If there are 110 grams of Element X, how long, to the nearest ten
Vaselesa [24]

Answer : The time taken by the element to decay to 2 grams is, 75.2 minutes

Step-by-step explanation:

Half-life = 13 min

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{13\text{ min}}

k=0.0533\text{ min}^{-1}

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 0.0533\text{ min}^{-1}

t = time passed by the sample  = ?

a = initial amount of the reactant  = 110 g

a - x = amount left after decay process =  2 g

Now put all the given values in above equation, we get

t=\frac{2.303}{0.0533}\log\frac{110}{2}

t=75.2\text{ min}

Therefore, the time taken by the element to decay to 2 grams is, 75.2 minutes

7 0
4 years ago
The diameter of a circle measures 28 m. What is the circumference of the circle?
Pepsi [2]

Answer:

87.92 m

Step-by-step explanation:

The formula to calculate the circumference of the circle is:

Diameter * Pi  ---->  28 * 3,14

6 0
3 years ago
Can someone help me pls!
eduard

This question is about how transformations can affect graphs.

First, we'll want to get rid of that -4 on the function of F.

So we can reflect the function over the y-axis and then compress it by a factor of 4 to make the graph x^2.

Then we can move the graph over to the left 3 because the c value is positive, meaning that we move the graph over to the left.

Finally, we can move the function of by \frac{2}{3} because the d value is positive, meaning that we move the graph up.

Hope this helps.

頑張って!

6 0
3 years ago
A bottler of drinking water fills plastic bottles with a mean volume of 1001 milliliters (ml) and standard deviation of 6 ml. th
Alex73 [517]

The formula for z-score is:

z-score = (X – μ) / σ

where,

X = sample

μ = mean = 1001

σ = standard deviation = 6

Since we are looking for volumes less than 1001 mL, let us use 1000.5 mL for X.

z-score = (1000.5 – 1001) / 6

z-score = -0.083

Referring to the standard distribution table for z-test, this corresponds to:

p = 0.4681

<span>So 46.81% of the bottles are less than 1001 mL.</span>

8 0
4 years ago
What is the surface area of this rectangular prism?
Sloan [31]
Hello!

First of all, let's find the area of the bases. We can see that the base is 8 by 6, or 48. We have this onto the top as well. This gives us 96. We can multiply The area of each side (base,front, side) by two to get the other side. Then we will add.

48(2)=96 (Base)
42(2)=84 (Side)
56(2)=112 (Front)

Now we add all of our numbers up.

96+84+112=292

Therefore, our answer is B) 292 in²

I hope this helps!

6 0
3 years ago
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