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Oksanka [162]
2 years ago
13

Brianna went shopping at Forever 21 and spent a total of $68. Her purchase included a pair of jeans at $32 and t-shirts for $12

each. How many t-shirts did Brianna buy?
Write an equation and solve. I need help please
Mathematics
1 answer:
asambeis [7]2 years ago
6 0

Answer:

3 Shirts

Step-by-step explanation:

$68-$32=$36

$36/$12= 3

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Each salt shaker holds 1 1/4 ounces. If a box of salt contains 10 ounces, how many shakers will it fit
Alekssandra [29.7K]
8 shakers will fit  becuase 4 shakers equal 5 ounces and you multiply it by two and you get 10

3 0
3 years ago
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A cylinder with the height of 6km has a volume of 384km3 what is the radius?
azamat

Answer:

r = 8

Step-by-step explanation:

V = π r^2 h so 383 = r^2 (6)

383 / 6 = r^2

64 = r^2 so

r = 8

4 0
3 years ago
The result of adding a complex number to its conjugate is “an integer/a pure imaginary number/a real number/a whole number” and
sineoko [7]

Answer:

If Z is a complex number:

Z = a + b*i

where a and b are real numbers, and i is an imaginary number.

Then "a" is the real part.

"b*i" is the imaginary part.

The conjugate of Z is:

Zc = a - b*i

So the sign of the imaginary part changes.

Then:

Sum:

Z + Zc = (a + bi) + (a - bi) = 2*a + 0 = 2*a

and remember that a is a real number, then 2*a is also a real numer.

The correct answer is "A real number".

Difference:

Z - Zc = (a + bi) - (a - bi) = 2b*i

and this is a pure imaginary number, so here the correct answer is: "a pure imaginary number"

6 0
3 years ago
The average number of mosquitoes in a stagnant pond is 80 per square meter with a standard deviation of 12. If 36 square meters
svp [43]

Answer:

a) 18.4%

Step-by-step explanation:

Assuming a normal distribution, the z-score (z) for the probability of the average of the mosquitoes count being 'X'  is given by:

z(X)=\frac{X-\mu }{\frac{\sigma}{\sqrt{n}}}

Where 'μ' is the distribution mean, 'σ' is the standard deviation and 'n' is the number of square meters chosen.

For X = 81.8 and n=36:

z(X)=\frac{81.8 - 80}{\frac{12}{\sqrt{36}}}\\z(X)= 0.9

A z-score of 0.9 is equivalent to the 81.59 th percentile in a normal distribution.

Therefore, the probability (P) that the average of those counts is more than 81.8 mosquitoes per square meter is:

P= 100\% - 81.59\%\\P=18.41\%

8 0
3 years ago
What are the solutions to the equation?<br> x2 + 6x = 40
Bumek [7]
X=5 because 2x plus 6x equals 8x and then when you divide the 40 by 8 u get 5
7 0
3 years ago
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