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lord [1]
2 years ago
8

HELP PLEASEEEEEEEE ASAPP

Mathematics
2 answers:
seraphim [82]2 years ago
4 0

Answer:

A is correct

Step-by-step explanation:

saveliy_v [14]2 years ago
4 0

Answer: A

Step-by-step explanation:

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A scientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 psi with 95% confidence. Bas
yaroslaw [1]

Answer:97 rods

Step-by-step explanation:

The number of steel rods for 95% confidence level

n=\left ( \frac{Z_\frac{\alpha }{2}\times \hat{\sigma }}{E} \right )^2

Z_\frac{\alpha }{2}=1.96

E=3

\hat{\sigma }=15

Substituting values

n=\left ( \frac{1.96\times 15}{3}\right )^2

n=96.04\approx 97

Thus 97 rods is tested

6 0
4 years ago
28.74% of 676.87 to 2 decimal places pls help
gregori [183]

Answer:

the answer of this question is = 194.53

8 0
3 years ago
Convert the following improper fraction to a whole number or a mixed number: 41/6
Anuta_ua [19.1K]

Answer:

6 and 5 over 6

6 5/6

Step-by-step explanation:

it would be a mixed fraction because 6 can't go into 41 evenly

7 0
3 years ago
Read 2 more answers
Choose the quadratic equation that has x-intercepts of −1/3 and 5/2
miv72 [106K]
I’m pretty sure it will be the last one f(x)=(3x+1)(2x-5).
3 0
2 years ago
Read 2 more answers
Find the area <br> Please someone help
IgorLugansk [536]
So first let’s find the area of the rectangle. The formula for finding the area of a rectangle is A=l x w.
The length is 10ft and the width is 8ft.
A=10ft x 8ft=80ft^2
The area of the rectangle is 80ft^2.

Now let’s find the area of the triangle. The formula for finding the area of a triangle is A=h x b/2. Both the height and the base of the triangle is 4ft.
A=4ft x 4ft/2=8ft^2.
The area of the triangle is 8ft^2.

Now to find the area of the entire shape. Add the area of the rectangle and the area of the triangle.
80ft^2+8ft^2=88ft^2
The total area of the shape is 88ft^2.
5 0
3 years ago
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