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3 years ago

Which number from the set {5, 10, 15, 18} makes the equation true?

Mathematics

2 answers:

Ganezh [65]3 years ago

6 0

Answer:

Step-by-step explanation:

Given the equation 2x + 3(x + 4) = 37, to find x we will make x the subject of the formula. To do that, we need to first open the bracket of the equation to have;

2x+3x+12=37

5x+12 = 37

Taking +12 to the other side of the equation will change the sign to negative i.e -12 to give;

5x = 37-12

5x = 25

Dividing both sides the coefficient of x which is 5, we will have;

5x/5 = 25/5

x = 5

Since 5 is an element of the given set, 5 is therefore the element of the set that makes the equation true.

Vlada [557]3 years ago

3 0

Answer

Letter B

Step-by-step explanation

x=10 because

2x{ 10}+ 3 =23

X{10} + 4= 14

23+ 14= 37

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2 years ago

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Hitman42 [59]

Option C:

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Solution:

Given equation:

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<u>To find the degree:</u>

$\sin x=1+\cos ^{2} x$

Subtract 1 + cos²x from both sides.

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Using the trigonometric identity: $\cos ^{2}(x)=1-\sin ^{2}(x)$

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Factor the quadratic equation.

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Option C is the correct answer.

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Answer:

Step-by-step explanation:

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3 years ago

The seismic activity density of a region is the ratio of the number of earthquakes during a given time span to the land area aff

Karolina [17]

The correct statement about the earthquake in the state is option c. State A had approximately 3,362 more earthquakes than State B.

<h3>How to solve for the earthquake in the state A</h3>

we have x/y = 0.00299

y = 163696

To solve for x we have

163696 * 0.00299

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<h3>Next we have to solve for earth quakes in state B</h3>

x = 0.1402 x 10931

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Next we have to find the difference

4895 - 1533 = 3362 earthquakes.

We have to conclude that state A has 3362 earthquakes more than B. Hence the answer is c.

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