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2 years ago

8

Please i need this to be done. The end of the marking period is Friday and i have until tomorrow to do some of this can anyone h

elp??

1 answer:

natita [175]2 years ago

6 0

Good luck I answered on the other one

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Hi! im not sure if my answer is correct or not can someone check me :)

Maslowich

It is correct goodluck

7 0

2 years ago

how do you write the quotient (9+i) over (9-i) in standard form? I need the answer but more importantly, I need to learn how to

Scorpion4ik [409]

Since they are the conjugates of each (9-a and 9+a are conjugates, or with any number replacing 9) , we multiply it by (9+i)/(9+i) to get (9+i)^2/(9-i^2)=(81+2i+i^2)/(9-(-1))=(81-1+2i)/(10)=80/10+2i/10=8+i/5. Conjugates work because they make i into i^2 (-1) without any of the sneaky i's in the middle!

6 0

3 years ago

A right triangle has a leg length of 21 inches and a hypotenuse length of 29 inches. What is the length of the other leg?

Shalnov [3]

Answer:

20

Step-by-step explanation:

Pythagorean Theorem: a^2 + b^2 = c^2

21^2 + b^2 = 29^2

441 + b^2 = 841

Subtract 441 on both sides to get b^2 = 400

Take the square root of both sides to get b = 20

4 0

3 years ago

The scale of Miguel's dollhouse is 1in.=2 2/7ft. If the pants of the military uniform of the father in the dollhouse are 1 2/5 i

Eva8 [605]

Answer:

3 1/5 ft

Step-by-step explanation:

We can set up a proportion:

$\frac{1}{2\frac{2}{7} } =\frac{1\frac{2}{5} }{x}$ , where x is how long the pants are in real life

Cross multiply:

x = (2 2/7) * (1 2/5)

It's easier if we have improper fractions, so convert the mixed numbers into improper fractions:

2 2/7 = 16/7

1 2/5 = 7/5

Now, put these back in:

x = (16/7) * (7/5) = 16/5 = 3 1/5

Thus, in real life, the pants would be 3 1/5 ft long.

Hope this helps!

5 0

3 years ago

Read 2 more answers

12lb- 5oz- 7lb 10oz =

aliya0001 [1]

You need to combine like terms.
it should be:
12ibs-7ibs-5oz-10z
5ibs-(-5oz)

7 0

3 years ago