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2 years ago

What is the value of x in the diagram below? If necessary, round your answer

Mathematics

2 answers:

dexar [7]2 years ago

8 0

Answer:

$\text{C. }7.2$

Step-by-step explanation:

In the figure, all three triangles are similar. By definition, the corresponding sides of similar polygons must be in a constant proportion. Therefore, we can set up the following proportion to solve for $x$ by dividing corresponding sides:

$\frac{x}{12}=\frac{12}{20},\\20x=144,\\x=\frac{144}{20}=\boxed{\text{C. }7.2}$

Papessa [141]2 years ago

3 0

Answer:

x = 7.2

Step-by-step explanation:

Look I did the math, okay?

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Y is 5 less than the square of the sum of p and q.

guajiro [1.7K]

Answer:

y = (p+q)² - 5

Step-by-step explanation:

Use the wording to do this:

y = (p+q)² - 5

3 0

3 years ago

What is the value of the discriminant for the quadratic equation 0 = x + 2 + x^2?

aliya0001 [1]

Answer:

The discriminant of the quadratic equation is -7.

Step-by-step explanation:

We are given the following quadratic equation in the question:

$x^2+x+2 = 0$

Comparing to general quadratic equation:

$ax^2+bx+c = 0\\a = 1\\b = 1\\c = 2$

We have to find the discriminant of the quadratic equation.

Formula:

$d = b^2-4ac$

Putting values, we get,

$d = (1)^2 - 4(1)(2) = 1 - 8 = -7$

Thus, the discriminant of the quadratic equation is -7.

5 0

3 years ago

Pls help me figure this out

hodyreva [135]

Answer:

C. $\frac{27}{225}=\frac{b}{100}$

Step-by-step explanation:

To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.

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3 years ago

A bag cost 4 times as much as a dress if the bag cost $276 how much will Toni speed on the bag and 3 such dresses

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276 divides by 4 = 69
So 3x69 = 207 + 276 = $483

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