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2 years ago

What is a multiplication equation that has a solution of 2/7

Mathematics

1 answer:

prisoha [69]2 years ago

4 0

1/7 *2 =2/7 take denominator with 1 over it and multiply by numerator

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light travels at about 186 thousand miles per second and the sun is about 93 million miles from the Earth. how much time does li

zlopas [31]

The answer is 279,000,000

5 0

3 years ago

What types of solutions will a quadratic equation have when the discriminant b2 − 4ac in the quadratic formula is a perfect squa

netineya [11]

<em>The discriminant must be zero.</em>

Step-by-step explanation:

A Perfect-Square Trinomial is given by the form:

$(\alpha x \pm \beta)^2=(\alpha^2x^2 \pm 2\alpha x \beta + \beta^2)$

The discriminant in the quadratic formula is:

$\Delta=b^2-4ac \\ \\ \\ Here: \\ \\ a= \alpha^2 \\ \\ b=2\alpha \beta \\ \\ c=\beta^2 \\ \\ \\ So: \\ \\ \Delta=(2\alpha \beta )^2-4(\alpha^2)(\beta^2) \\ \\ \Delta=4\alpha^2 \beta^2-4\alpha^2 \beta^2=0$

So in order to get a perfect square,<em> the discriminant must be zero.</em>

<h2>Learn more:</h2>

Discriminant: brainly.com/question/1537997

#LearnWithBrainly

4 0

3 years ago

Please help me this is due in a few minutes

Vaselesa [24]

Answer:

Volume of one Bugle => 462.8 mm³

Volume of 18 Bugles => 8,330.4 mm³

Volume formula for a cone => ⅓πr²h

Step-by-step explanation:

Volume of one bugle = volume of cone (V) = ⅓πr²h

Where,

r = 5.1 mm

h = 17 mm

Volume of one Bugle = ⅓*π*5.1²*17 = 462.8 mm³

Volume of 18 Bugles = 462.8 × 18 = 8,330.4 mm³

7 0

2 years ago

The scale model of the car is 1:18 the length of the model is 9 1/2 inches how many feet long is the actual

Y_Kistochka [10]

Answer:

14.25 ft

Step-by-step explanation:

1 inch of the model represents 18 inches of the real car. The car's dimensions are 18 times larger than the model's dimensions. Multiply the model dimension by 18 to find the corresponding real dimension.

9 1/2 * 18 = 9.5 * 18 = 171

The actual car is 171 inches long.

Now we need to convert 171 inches to ft.

1 ft = 12 in.

Since we want to eliminate inches and end up with feet, we divide both sides by 12 in.

(1 ft)/(12 in.) = 1

The conversion factor is (1 ft)/(12 in.) to go from inches to feet.

171 in. * (1 ft)/(12 in.) = 14.25 ft

Answer: 14.25 ft

5 0

2 years ago

Read 2 more answers

In a study by Peter D. Hart Research Associates for the Nasdaq Stock Market, it was determined that 20% of all stock investors a

Pani-rosa [81]

Answer:

0.0545 = 5.45% probability that exactly seven are retired people.

Step-by-step explanation:

For each stock investor, there are only two possible outcomes. Either they are retired people, or they are not. Stock investors are independent. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$