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4 years ago

Can someone explain to do #51? Thank you!

Mathematics

2 answers:

kari74 [83]4 years ago

7 0

Answer:

11 3/8 ft

Step-by-step explanation:

convert mixed fractions then multiply them

13/4×7/2

11 3/8

Nuetrik [128]4 years ago

4 0

11 3/8 ft
Hope this helps

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Information about movie ticket sales was printed in a movie magazine. Out of fifty PG rated movies, 38% had ticket sales in exce

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Answer: I need to know how to solve this problem, as this problem is incomplete.

Step-by-step explanation:

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4 years ago

What is the x, y, and z for this question?

Monica [59]

Answer:

x= -2

y=0

z= 1

Step-by-step explanation:

{-x+5y-10z=-8

2x-y+10z=6}

{2x-y+10z=6

-7x-3y-10y=4}

{-x+5y-10z=-8

2x-y+10z=6} = x+4y=-2

{2x-y+10z=6

-7x-3y-10y=4} = -5x-4y=10

{x+4y=-2

-5x-4y=-10}. =. y= 0 x= -2

substitute x and y in -x+5y-10z=-8

-(-2)+5(0)-10z=-8

solve for z

z= 1

(x,y,z) = (-2,0,1)

hope this helps

4 0

3 years ago

Area of irregular shapes?

den301095 [7]

Answer:

13,440 is the area of this irregular object....

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3 years ago

An adult can lose or gain two pounds of water in the course of a day. Assume that the changes in water weight are uniformly dist

Levart [38]

Answer:

Standard deviation of the weight over a day is 1.15

Step-by-step explanation:

Since it is given that water weight is uniformly distributed between -2 to 2.

So applying formula for variance of uniformly distribution as follows,

$variance=\dfrac{\left (b-a\right )^{2}}{12}$

From the given data, values of a and b is , $a=-2$ , $b=2$ ..

Substituting the values,

$variance=\dfrac{\left (2-\left (-2 \right )\right )^{2}}{12}$

Now, $-\left ( -2 \right )=2$

$variance=\dfrac{\left (2+2\right )^{2}}{12}$

$variance=\dfrac{\left (4\right )^{2}}{12}$

$variance=\dfrac{16}{12}$

Dividing the fraction by 4,

$variance=\dfrac{4}{3}$

So, the value of variance is $\dfrac{4}{3}$

The formula for standard deviation is given as,

$Standard\:deviation=\sqrt{variance}$

Substituting the value,

$Standard\:deviation=\sqrt{\dfrac{4}{3}}$

$Standard\:deviation=1.15470$

Rounding to 2 decimal places,

$Standard\:deviation=1.15$

So, the value of standard deviation is 1.15.

4 0

3 years ago

Read 2 more answers

To practice for a competition, Jasmine swam 930 meters in the pool each day for 4 weeks. How many kilometers did Jasmine swim in

aivan3 [116]

Answer:

To practice for a competition, Jasmine swam in those 4 weeks a total of $26.04\ km$

Step-by-step explanation:

First of all, we need to determine how many days did Jasmine went to the pool in total, so if we have $1\ week=7\ Days$ , and if She has been going for 4 weeks, therefore $4\ weeks=28\ days$ .

Then we use Jasmine's rate of practice $930m/day$ .

So $930\frac{m}{day} (28\ days)=26,040m$ or $26.04\ km$ is the total distance swam by Jasmine in the four weeks.

8 0

4 years ago