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dmitriy555 [2]
4 years ago
15

a cell phone company test 95 cell phones and finds that seven of them have defects out of the 760 cell phones how many would you

expect to have defects ​
Mathematics
1 answer:
suter [353]4 years ago
6 0

Answer:

56

Step-by-step explanation:

simple ratio: 7/95 = x/760

first, calculate 7/95 which is 0.0736

next, multiply that by 760, which would be 56

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Binomial expansion of (x+2)^4
N76 [4]
The two terms are x and 2, thus, x+2 is a binomial.  We have to multiply the binomial by itself four times since it is raised to 4th power.

Let us multiply x+2 by itself using Polynomial Multiplication:

(x+2)(x+2) = x^2 + 4x + 4

Taking the result, let us multiply it again by a+b:

(x^2 + 4x + 4)(x+2) = x^3 + 6x^2 + 12x + 8

And again:

(x^3 + 6x^2 + 12x + 8)(x+2) = x^4 + 8x^3 + 24x^2 + 32x +16

The binomial expansion of (x+2)^4 is  x^4 + 8x^3 + 24x^2 + 32x +16
4 0
3 years ago
Olivia buys 6 packs of muffins. she uses a Coupon and saves $3 off the total.
lyudmila [28]

Answer:

B

Step-by-step explanation:

the six(6) muffins plus the $3 she saved

6 0
3 years ago
What is the volume of an 8-inch by 4-inch by 44-inch rectangular box?​
emmainna [20.7K]

Answer:

1408

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A cylinder with radius 6 cm and height h cm has the same volume as a sphere with radius 4.5cm
lesya [120]

Answer:

h = 4.22 cm

Step-by-step explanation:

Mathematically, we have the volume of a cylinder as;

V = pie * r^2 * h

We have it that the radius is 6 cm

V = pie * 6^2 * h

for the sphere, we have it that;

V = 4/3 * pie * r^3

V = 4/3 * pie * 4.5^3

We can proceed to equate both volumes;

pie * 6^2 * h = 5/3 * pie * 4.5^3

pie on both sides cancel out

6^2h = 5/3 * 4.5^3

36h = 151.875

h = 151.875/36

h = 4.22 cm

7 0
3 years ago
Write the following function in standard form y=5(x-2)(x+1)
Natasha2012 [34]
Y = 5(x - 2 ) (x + 1)
y = 5(x² + x -2x - 2)
y = 5(x² - x - 2)
y = 5x² - 5x - 10

------------------------------------
Answer: y = 5x² - 5x - 10
------------------------------------
3 0
3 years ago
Read 2 more answers
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