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mamaluj [8]
4 years ago
15

I need your help....pleeeease!

Mathematics
1 answer:
WINSTONCH [101]4 years ago
3 0

Answer:

112

Step-by-step explanation:

just add all angles

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28:42=x:54 what is the value of x.​
Arlecino [84]
<h2>Step-by-step explanation:</h2>

We need to think, 28 / 42 = x / 54.

We need to do a proportion for this problem!

First, line up both fractions, then put a equal sign between both fractions.

28 / 42 = x / 54.

We multiply in a diagonal and then we divide by the one without a diagonal.

28 and 54 are a diagonal.

We multiply both numbers!

54 x 28 = 1,512.

Then, we divide by 42.

1,512 / 42 = 36.

Therefore, x = 36.

+1 Picture :)

7 0
4 years ago
What is the measurement of angle f?
ziro4ka [17]

Answer:

∠ f = 33°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin f = \frac{opposite}{hypotenuse} = \frac{36}{66} , thus

∠ f = sin^{-1} (\frac{36}{66} ) = 33° ( to the nearest degree )

6 0
3 years ago
Read 2 more answers
In ΔJKL, k = 9.6 cm, l = 2.7 cm and ∠J=43°. Find ∠L, to the nearest 10th of a degree.
Bogdan [553]

Answer:

L = 10.64°

Step-by-step explanation:

From the given information:

In triangle JKL;

line k = 9.6 cm

line l = 2.7 cm; &

angle J = 43°

we are to find angle L = ???

We can use the sine rule to determine angle L:

i.e

\dfrac{j}{SIn \ J} = \dfrac{l}{ SIn \ L}

Using Pythagoras rule to find j

i,e

j² = k² + l²

j² = 9.6²+ 2.7²

j² = 92.16 + 7.29

j² = 99.45

j = \sqrt{99.45}

j = 9.97

∴

\dfrac{9.97}{Sin \ 43} = \dfrac{2.7}{ Sin \ L}

{9.97 \times    Sin (L ) = (2.7 \times Sin \ 43)

=  Sin \ L = \dfrac{ (2.7 \times Sin \ 43)}{9.97 } \\ \\ =  Sin \ L = \dfrac{ (2.7 \times 0.6819)}{9.97 }  \\ \\  = Sin \ L = 0.18466 \\ \\  L = Sin^{-1} (0.18466) \\ \\  L = 10.64 ^0

3 0
3 years ago
Round 1.25 to the nearest whole number
MrRissso [65]

Answer:

1

Step-by-step explanation:

if it's above 1.5 you would round up but it's not so

8 0
3 years ago
Read 2 more answers
2. How meny ways are there for 5 people to sit in a row?
tensa zangetsu [6.8K]

Answer:

the number of people as well as the number of chairs is 5.

Step-by-step explanation:

5! = 5x4x3x2x1= 120

so therefore, there are exactly 120 ways in which they can be seated.

7 0
3 years ago
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