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2 years ago

IXL question for distributive property

Mathematics

1 answer:

photoshop1234 [79]2 years ago

6 0

Answer:

55f + 45

Step-by-step explanation:

5 (11f +9)

5 times 11f, then 5 times 9

55f + 45 -> since the 9 was positive we add!

I hope this helps you!

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Carmen deposits $2000 into an account that pays simple interest at a rate of 3% per year. how much interest will she be paid in

STatiana [176]

Sn=So(1+p/100*2)

2000*(1+3/100*2)=2000(1+3/50)=2000*53/50=40*53=2120$

My answer:2120$

8 0

3 years ago

There is 30\100 of a liter of orange juice on one container and 5\10 of a liter of pineapple juice in another container. If Mrs.

Mandarinka [93]

30/100 +5/10 = 3/10 +5/10 = 8/10 = 4/5

Mrs. Morales will have 4/5 of a liter of juice.

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The total quantity was found by adding the quantities of individual kinds of juice. The addition was performed by expressing each fraction using the common denominator of 10, then reducing the final result.

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4 years ago

Compute the standard deviation for the set of data.

OLEGan [10]

B.4 because i used the formula to compute it

3 0

3 years ago

Read 2 more answers

The area of a square table top is 144m2 what is the perimeter of the table top

dsp73

9514 1404 393

Answer:

48 m

Step-by-step explanation:

The side length (s) of the table top is given by ...

A = s²

s = √A = √(144 m²) = 12 m

The perimeter is given by ...

P = 4s

P = 4(12 m) = 48 m

The perimeter of the table top is 48 meters.

3 0

3 years ago

Cos^2x+cos^2(120°+x)+cos^2(120°-x)<br>i need this asap. pls help me

o-na [289]

Answer:

$\frac{3}{2}$

Step-by-step explanation:

Using the addition formulae for cosine

cos(x ± y) = cosxcosy ∓ sinxsiny

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

cos(120 + x) = cos120cosx - sin120sinx

= - cos60cosx - sin60sinx

= - $\frac{1}{2}$ cosx - $\frac{\sqrt{3} }{2}$ sinx

squaring to obtain cos² (120 + x)

= $\frac{1}{4}$ cos²x + $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

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

cos(120 - x) = cos120cosx + sin120sinx

= -cos60cosx + sin60sinx

= - $\frac{1}{2}$ cosx + $\frac{\sqrt{3} }{2}$ sinx

squaring to obtain cos²(120 - x)

= $\frac{1}{4}$ cos²x - $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

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

Putting it all together

cos²x + $\frac{1}{4}$ cos²x + $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x + $\frac{1}{4}$ cos²x - $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

= cos²x + $\frac{1}{2}$ cos²x + $\frac{3}{2}$ sin²x

= $\frac{3}{2}$ cos²x + $\frac{3}{2}$ sin²x

= $\frac{3}{2}$ (cos²x + sin²x) = $\frac{3}{2}$

5 0

3 years ago