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3 years ago

How do you multiply mixed numbers with fractions?

Mathematics

1 answer:

Alex777 [14]3 years ago

7 0

Answer:

First, you change each number to an improper fraction, simplify if possible. Then Multiply the numerators and then denominators, put your answer at lowest terms.

I really hope this helped.!

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What is nine-tenths of 2000?

Zanzabum

Answer:

1800

Step-by-step explanation:

4 0

3 years ago

Find the absolute maximum and minimum of the function on the given domain. f (x comma y )equals 8 x squared plus 7 y squared on

pickupchik [31]

Answer:

the maximum value is 7

The minimum value is 0

Step-by-step explanation:

Step One : Interpret the question

The above question can be written like

The Equation

$f(x,y) = 8x^2 +7y^2$

The diagram of the triangular plate and the bounded lines is shown on the first uploaded image

From the diagram $f(0,0) = 8(0)^2 +7(0)^2 =0$

$f(1,0) =8(1)^2 + 7(0)^2 = 8$

$f(0,1) =8(0)^2 + 7(1)^2 = 7$

Partial differentiation of the equation w.r.x

$A =\frac{\delta f}{\delta x } = 16x$

Partial differentiation of the equation w.r.y

$B =\frac{\delta f}{\delta y } = 14y$

Looking at the diagram the maximum value is 7 i.e at (x , y) = (0,1)

The minimum value is 0 i.e (x , y) = (0,0)

3 0

3 years ago

HELPPPPPPPPPP ITS DUEEEEEEEEEEEEEEEE

erastovalidia [21]

Answer:

Look below.

Step-by-step explanation:

1.) Alternate exterior

2.) Alternate interior

3.) Same-side interior

4.) Vertical

5.) Corresponding

6.) Alternate exterior

8 0

3 years ago

Can you answer this math homework? Please!

luda_lava [24]

Answer: (3.5,-2)

Step-by-step explanation:

To solve this problem, all we have to do is plug in y=-2 into either equations from step one to find the coordinate. To make sure we have the right x-coordinate, let's plug in y for both equations.

4x-7y=28 [plug in y=-2]

4x-7(-2)=28 [multiply]

4x+14=28 [subtract both sides by 14]

4x=14 [divide both sides by 4]

x=3.5

------------------------------------------------------------------------------------------------------------

6x-5y=31 [plug in y=-2]

6x-5(-2)=31 [multiply]

6x+10=31 [subtract both sides by 10]

6x=21 [divide both sides by 6]

x=3.5

Now, we know the solution to the system is (3.5,-2).

3 0

3 years ago

Read 2 more answers

A researcher wishes to estimate, with 9090% confidence, the proportion of adults who have high-speed Internet access. Her es

Sunny_sXe [5.5K]

Answer: a) Required minimum sample size= 219

b) Required minimum sample size= 271

Step-by-step explanation:

As per given , we have

Margin of error : E= 5% =0.05

Critical z-value for 90% confidence interval : $z_{\alpha/2}=1.645$

a) Prior estimate of true proportion: p=28%=0.28

Formula to find the sample size :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.28(1-0.28)(\dfrac{1.645}{0.05})^2\\\\=218.213856\approx219$

Required minimum sample size= 219

b) If no estimate of true proportion is given , then we assume p= 0.5

Formula to find the sample size :-

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.645}{0.05})^2\\\\=270.6025\approx271$

Required minimum sample size= 271

8 0

3 years ago