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Anni [7]
3 years ago
10

PLZ HELP ME WITH THIS, IT COMES WITH AN EXAMPLE AND A QUESTION!?!!?

Mathematics
2 answers:
Nonamiya [84]3 years ago
6 0

Answer:

-6(-8.5) = 51

Step-by-step explanation:

-8 1/2 is also -8.5

-6(-8.5) = 51

Katena32 [7]3 years ago
3 0

Answer:

cool

Step-by-step explanation:

very nice

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diamong [38]

Answer:

Cos A=5/13

we have

Cos² A=1-Sin ²A

25/169=1-Sin²A

sin²A=1-25/169

sin²A=144/169

Sin A=\sqrt{144/169}=12/13

again

Tan B=4/3

P/b=4/3

p=4

b=3

h=\sqrt{3²+4²}=5

Now

Sin B=p/h=4/5

in IV quadrant sin angle is negative so

Sin B=-4/5

CosB=b/h=3/5

Now

<u>S</u><u>i</u><u>n</u><u>(</u><u>A</u><u>+</u><u>B</u><u>)</u><u>:</u><u>s</u><u>i</u><u>n</u><u>A</u><u>c</u><u>o</u><u>s</u><u>B</u><u>+</u><u>C</u><u>o</u><u>s</u><u>A</u><u>s</u><u>i</u><u>n</u><u>B</u>

<u>n</u><u>o</u><u>w</u><u> </u>

<u>substitute</u><u> </u><u>value</u>

<u>Sin(A+B):</u>12/13*3/5+5/13*(-4/5)=36/65-4/13

<u>=</u><u>1</u><u>6</u><u>/</u><u>6</u><u>5</u><u> </u><u>i</u><u>s</u><u> </u><u>a</u><u> </u><u>required</u><u> </u><u>answer</u>

6 0
3 years ago
you want to make a scale model of a sailboat that is 51 ft long and 15 ft wide you plan to make the sailboat 17 in long how wide
Strike441 [17]

Answer:

5 in

Step-by-step explanation:

7 0
2 years ago
X²+y²=25 xy=12 find the value of (3x+3y)²​
Papessa [141]

Answer:

Step-by-step explanation:

(a + b)²=a²+2ab+b²

(3x+3y)²= (3x)²+2*3x*3y+(3y)²

=9x² + 18xy + 9y²

=9x²  + 9y² + 18xy

= 9*(x²+y²) +18xy

=9*25 + 18*12

=225 + 216

=441

7 0
3 years ago
Tile costs $28 per sq meter. Countertop measures 48 sq meters. How much will it cost to cover with new tile?
daser333 [38]
28×48=1344$ that is how much money you will need to cover it up
6 0
3 years ago
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twenty people are going by van to a movie. each van seats eight people. how many vans are needed to take everyone?
frozen [14]

They will need to take 3 vans

5 0
3 years ago
Read 2 more answers
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