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Naddik [55]
3 years ago
5

Please answer this :(​

Mathematics
1 answer:
mojhsa [17]3 years ago
4 0

Answer:

68.9°

Step-by-step explanation:

Using Sine rule

x/sin X = y/sin Y

4.5/sin X = 4/sin 56

sin X × 4 = 4.5 × sin 56

sin X = 4.5 × sin 56/4

X = arc sin (4.5 × sin 56/4)

X = 68.85449°

Approximately = 68.9°

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Find the surface area of the prism.
Brrunno [24]

Answer:

108 cm²

Step-by-step explanation:

the surface area is the sum of all individual shapes areas on the surface.

2 right-angled triangles

3 rectangles

area of a right-angled triangle is At = a×b/2

At = 4×3/2 = 6 cm²

we need it twice : 12 cm²

one rectangle (length×width) = 8×3 = 24 cm²

one rectangle = 8×4 = 32 in²

one rectangle = 8×5 = 40 cm²

total surface area

A = 12+24+32+40 = 108 cm²

an area is always a square unit (power of 2).

a volume is always a cubic unit (power of 3).

and a length is always a simple unit (power of 1).

6 0
3 years ago
What is 2x+3y=17 if y=-3
laila [671]

Answer:

x = 13

Step-by-step explanation:

ur welcome

6 0
3 years ago
Read 2 more answers
PLSSSSS HELP!!!!!!!!!
Anna11 [10]

Answer:

x=30º

∠CAB=60°

∠ACB=80°

Step-by-step explanation:

Because the angles of every triangle add up to 180º, we know that:

2x+20+2x=180-40\\ 4x=180-40-20\\ 4x=180-60\\ 4x=120\\ x=\frac{120}{4}

x=30º

Plug that in for x on both angles, and you will get

∠CAB=60°

∠ACB=80°

6 0
3 years ago
There are 2 red, 3 blue, and 4 green marbles in a jar?<br><br> What does the ratio 4 to 9 represent?
MrMuchimi

Hello!

How many marbles are in the jar all together?

3 + 2 + 4 = 9

We also know that there are 4 green marbles in the job.

So, I would assume that the answer is;

Green Marbles : Total Marbles or Green Marbles to Total Marbles.

<em>waffletowne</em>

6 0
3 years ago
Answers <br> A. 2<br> B. -2 <br> C. 10<br> D. -10
Mashcka [7]

Answer:b

10 to 20 is 10 and 80 to 60 is -20 so it’s -20/10 which is -2

7 0
3 years ago
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