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3 years ago

Work out an estimate for the value of 48.7 × 61.2/11.3

Mathematics

2 answers:

avanturin [10]3 years ago

4 0

Answer:

$263.755$

Step-by-step explanation:

$48.7 \times 61.2 \div 11.3 \\ 2,980.44 \div 11.3 \\ = 263.755752$

hope this helps

brainliest appreciated

good luck! have a nice day!

rewona [7]3 years ago

4 0

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<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em>

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7x+2y=3 and x-3y=30, what is the value of y?

Blizzard [7]

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<h3>I'm solving it using substitution method:-</h3>

<h3>7x+2y=3 {given}</h3>

<h3>x-3y=30 {given}</h3>

<h3>=>(3-2y)/7=30+3y {putting the value of x from eqn 1}</h3>

<h3>putting the value of y on eqn(1):-</h3>

<h2>Hence, x=3, y= -9</h2>

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3 years ago

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Someone please help me, this is dealing with the pythagorean theorem

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14. x ^2 = 12^2 + 7 ^2 = x = sqrt (12^2 + 7^2) = sqrt(193)

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3 years ago

PQRS is a parralelogram. the position vector of Q R and S are 5i +7j, -3i-8j and -4i-6j. find the position vector of P

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The value of the variable x = 6 and y = 5. Then the position vector of P will be 6i + 5j.

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The equation of line is given as

y = mx + c

Where m is the slope and c is the y-intercept.

PQRS is a parallelogram. the position vector of Q R and S are 5i +7j, -3i-8j and -4i-6j.

Then the point of Q, R, and S will be (5, 7), (-3, -8), and (-4, -6).

Let the point P be (x, y).

We know that the slope of the line QS and PQ will be same and line is passing through (-3, -8).

y = 1.444x + C

-8 = 1.444 (-3) + C

C = -3.667

Then the equation will be

y = 1.444x – 3.667 …1

The slope of the line PQ and RS will be same and line is passing through (5, 7).

y = -2x + D

7 = -2 (5) + D

D = 17

Then the equation will be

y = -2x + 17 …2

By solving equation 1 and 2, we have

x = 6 and y = 5

Then the position vector of P will be

⇒ 6i + 5j

The graph is given below.

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2 years ago

a ladder leans against the sufe of a house. the angle of elevation of the ladder is 70 degrees when the bottom of the ladder is

nekit [7.7K]

Answer:

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Step-by-step explanation:

The model is a right triangle with ladder being the hypotenuse and the angle between the ground and the ladder is 70°

Using the cosine ratio, with l being the length of the ladder.

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l × cos70° = 12 ( divide both sides by cos70° )

l = $\frac{12}{cos70}$ ≈ 35.1 ( to the nearest tenth )

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Answer:

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Step-by-step explanation:

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