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3 years ago

Which expression is equivalent to 7u+4u?

Mathematics

1 answer:

Marat540 [252]3 years ago

3 0

Answer:

11u

Step-by-step explanation:

Add 7u and 4u

Hope this helps! :)

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(6m³n)²(-4m⁵n) <br><br>must be simplified

Alekssandra [29.7K]

Answer:

-144m^11n^3

Step-by-step explanation:

-(6m^3)^2 x 4m^5n

-36m^6n^2 x 4m^5n

Answer:

-144m^11n^3

8 0

3 years ago

Find the distance between the points (6,5√5) and (4,3√2).<br> 2, 2√2, 2√3

FromTheMoon [43]

Answer:

D= $\sqrt{(147-30\sqrt{10}}$

Step-by-step explanation:

Here we are required to find the distance between two coordinates. We will use the distance formula to find the distance

The distance formula is given as

$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Here we are given two coordinates as

$(6,5\sqrt{5} ) , (4,3\sqrt{2} )$

Substituting these values in the Distance formula given above we get

$D=\sqrt{(6-4)^2+(5\sqrt{5} -3\sqrt{2}) ^2}$

$D=\sqrt{(2)^2+(5\sqrt{5})^2+(3\sqrt{2})^2-2*5\sqrt{5}*3\sqrt{2}}\\$

$D=\sqrt{4+125+18-2*15\sqrt{10}}\\D=\sqrt{147-30\sqrt{10}}\\$

Hence this is our answer

6 0

3 years ago

How do you divide 9/4 divided by 10/3

NeTakaya

Answer:

You do (Keep, Change, Flip)

so you keep 9/4

Then change the division sign to multiplication sign

Finally flip the next fraction (10/3) becomes 3/10

9/4 * 3/10 = (9*3)/(4*10) = 27/40

4 0

3 years ago

Anna is creating a personal balance sheet. She plans to list these items. Bank Account Jewelry Health Insurance Rent Which state

eduard

Answer:

A B D

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Upper AA 66-ft-tall fence runs parallel to a wall of a house at a distance of 3030 ft. Find the length of the shortest ladder t

Mkey [24]

Answer:

0.33 ft

Step-by-step explanation:

From the diagram, triangle ACE is similar to triangle BCD.

Therefore,

$\frac{b}{30+b} = \frac{6}{a}$

$a=\frac{6(30+b)}{b}$

Let the Length of the Ladder, L

Using Pythagoras theorem

$L^{2}=(30+b)^{2}+(\frac{6(30+b)}{b})^{2}$

$L^{2}=\frac{(30+b)^{2}(36+b^{2})}{b^{2}}$

$L=\sqrt{\frac{(30+b)^{2}(36+b^{2})}{b^{2}} }$

$L=\frac{30+b}{b}\sqrt{b^2+36}$

To find the least value, we have to equate the derivative of L to 0.

$L^{1}=\frac{b^{3}-1080}{b^{2}\sqrt{b^2+36}}$

Therefore:

b³-1080=0

b³=1080

b=10.26

The minimum length of the ladder is:

$L=\frac{30+10.26}{10.26}\sqrt{10.26^2+36}$

=0.33 ft

6 0

3 years ago