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3 years ago

Please help... I don't know what I'm doing.. I will give a thanks and a brainliest to whoever helps!

Mathematics

2 answers:

just olya [345]3 years ago

7 0

A. 3 feet 7 inches is a known value and will not change to anything else.
B. The height of the building is unknown and can be any positive value.
C. 2 o'clock is a known time that will not change.
D. 4 quarts in a gallon is a defined conversion value that will not change.

Allisa [31]3 years ago

6 0

2oclock in The afternoon

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(2x-2) (x+5) what does x =

Lynna [10]

Answer:

the two roots of the equation take the form

−

√

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(

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2 years ago

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What is a fraction just to know

maw [93]

Answer:

Step-by-step explanation:A fraction is like a pizza you got the pizza into three force you shading three of them that’s a fraction

4 0

3 years ago

Josephine wants to put a wallpaper border around the ceiling of her room. The dimensions are right there. How many feet of borde

joja [24]

You might want to check what I did just in case cause it's been a few years but it should be good. I hope this helps!

10.75 x 8.5 = 91.375

7 0

3 years ago

Find sin(a+B)

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

Sin(A+B):sinAcosB+CosAsinB

now 

substitute value

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

=16/65 is a required answer

6 0

3 years ago

Using a calculator or otherwise, calculate the exact value of 498.79×14.38. Round your answer to one (1) decimal place.

GuDViN [60]

Answer:

7172.6

Step-by-step explanation:

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2 years ago