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jasenka [17]
3 years ago
7

Find sin A. Please select the best answer from the choices provided

Mathematics
1 answer:
Phantasy [73]3 years ago
8 0

A key word to remember when doing this type of math is "SOHCAHTOA".

Sine =

Opposite over

Hypotenuse

Cosine =

Adjacent over

Hypotenuse

Tangent =

Opposite over

Adjacent


Since this is a 3, 4, 5 triangle, with the sides just multiplied by 7, the opposite of A which is 28 would be simplified to 4.

And the Hypotenuse would be simplified to 5.

So, the answer is 4 / 5!

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16 points - Question in photo!
storchak [24]

5.394e+13 hope this helps

6 0
3 years ago
Read 2 more answers
I need help with this math problem! Thanks!<br><br> -8 = -( x +4)
Damm [24]

Answer:

x = 4

Step-by-step explanation:

If the lonely negative sign infront of the brackets is confusing, it can be rewritten as -1.

To solve, simplify by expanding then isolate x.

-8 = -( x +4)

-8 = -1 ( x +4)       Distribute over brackets by changing the each term's sign

-8 = -x - 4            Start isolating x by moving everything to the other side

-8 +4  = -x -4 + 4        Add 4 to both sides so it cancels out on the right

-4  = -x

-4  = -1x           <= -x is the same at -1x

-4/-1  = -x/-1     <=divide both sides by negative 1

4 = x

x = 4      <= usually we write the variable on the left side

7 0
3 years ago
Is x+x+x+x=4x true or false
Mkey [24]

Step-by-step explanation:

X + x + x + x = 4x

4x = 4x

It is true

4 0
3 years ago
As a smart consumer, you are always on the lookout for sales, coupons, and rebates. While shopping for new clothes, you notice t
Firlakuza [10]

Answer:

You'd have to buy 3 shirts in order to use your coupon.

Step-by-step explanation:

Each shirt originally costs $17.99

One particular brand of shirts is on sale for 20% off the original price.

$17.99*0.2= $3.60 (amount taken off for each shirt)

Now subtract $3.60 from $17.99.

$17.99 - $3.60 = $14.39 (per shirt)

40 / 14.39 = 2.779 (round to 3)

You'd have to buy 3 shirts in order to use your coupon.

$14.39 * 3 = $43.17, in order to get $10 off you'd need to spend at least $40

7 0
3 years ago
Help Im having a graded test and need help asap ​
Yakvenalex [24]

Answer:

C = 3.14d

Step-by-step explanation:

From the table,

6.28÷2=3.14

9.42÷3=3.14

15.7÷5=3.14

31.4÷10=3.14

7 0
3 years ago
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