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2 years ago

Do the ratios 1/2 and 6/12 form a proportion

Mathematics

2 answers:

erastova [34]2 years ago

7 0

Answer:

1 = 6

2 12

Cross multiply:

1 * 12 = 2 * 6

Simplifying

1 * 12 = 2 * 6

Multiply 1 * 12

12 = 2 * 6

Multiply 2 * 6

12 = 12

Add '-12' to each side of the equation.

12 + -12 = 12 + -12

Combine like terms: 12 + -12 = 0

0 = 12 + -12

Combine like terms: 12 + -12 = 0

0 = 0

Solving

0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

Step-by-step explanation:

lawyer [7]2 years ago

6 0

Answer:

Step-by-step explanation:

Yes because 6 is 1/2 of 12

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Calcular: E = (sec245o + tg45o) ctg37o - 2cos60o

Vlada [557]

Answer:

$-2.813$

Step-by-step explanation:

Se simplifica inicialmente la fórmula en términos de las funciones trigonométricas fundamentales (Initially, the formula is simplified in terms of fundamental trigonometric functions):

$(\sec 245^{\circ} + \tan 45^{\circ} )\cdot \cot 37^{\circ} - 2\cos 60^{\circ}$

$\left(\frac{1}{\cos 245^{\circ}}+\frac{\sin 45^{\circ}}{\cos 45^{\circ}} \right)\cdot \left(\frac{\cos 37^{\circ}}{\sin 37^{\circ}} \right) - 2\cdot \cos 60^{\circ}$

$(-2.366 + 1 )\cdot (1.327) - 1$

$-2.813$

7 0

2 years ago

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jarptica [38.1K]

Answer:

i think it is D

Step-by-step explanation:

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2 years ago

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A bowl contains 80 M&M candies. If 15 of the candies are orange, what fraction of the candies is not orange?

lesantik [10]

65 candies are not orange.

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2 years ago

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Evaluate each function.<br> 1) f(x) = x2 + 4x; Find f(-7)

katrin [286]

Answer:

The answer is -77

Step-by-step explanation:

Ok, so assuming by x2 you mean x squared, I will solve this. So basically when you have a function, f(-7) would mean that you would have to replace all the x's in the equation with -7. So let's write that out. that would be f(-7) = -7^2 + (-7*4). So now according to PEMDAS, you would solve the exponent first, and -7^2 is equal to -49, because when you solve it you would do -(7^2), which is -(49), which is then -49. So now you have f(-7)= -49+ (4*-7). Solving for (4*-7), you get -28. This leaves you with -49 + (-28), which is -49 - 28. Simplifying that, you get the answer, which is -77.

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2 years ago

if a quadratic equation with real coefficients has a discriminant of -36 then what type of roots does it have

Aleks04 [339]

Step-by-step explanation:

We have,

If a quadratic equation with real coefficients has a discriminant of -36.

The general form of quadratic equation is :

$ax^2+bx+c=0$

The discriminant of this equation is : $D=b^2-4ac$

If D=0, it will have 1 real roots

If D>0, it will have 2 real roots

If D<0, it will have no real roots

We have,

D = -36 < 0, so, the quadratic equation will have no real roots.

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2 years ago