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4 years ago

How to do the 57th question?

Mathematics

1 answer:

Evgen [1.6K]4 years ago

4 0

Answer: What is the 57th question you are needing to be answered?

Step-by-step explanation:

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Which list contains ONLY irrational numbers?

Black_prince [1.1K]

The first choice is the contains only irrational number

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3 years ago

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A rose garden is going to be built in the city park in the shape of a parallelogram with a rectangular walkway through it. The g

Hunter-Best [27]

Answer: the total area where roses will be planted is 1520 feet²

Step-by-step explanation:

The formula for determining the area of a parallelogram is expressed as

Area = base × height

From the information given,

Base = 20 + 40 = 60 feet

Height = 38 feet

Area of the rose garden = 60 × 38 = 2280 feet²

The formula for determining the area of a rectangle is expressed as

Area = length × width

From the information given,

Length = 38 feet

Width = 20 feet

Area of the rectangular walkway is

20 × 38 = 760 feet²

Therefore, the total area where roses will be planted is

2280 - 760 = 1520 feet²

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3 years ago

The ratio of Nicole’s money to Sid’s money is 3:11. If Nicole has $33, how much money do Sid and Nicole have together? Show your

ddd [48]

Answer:

Step-by-step explanation:

5 0

3 years ago

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What is the line x intercept of the line y = -4 + 2x? a.4 b. -4 c.2 d.-2

expeople1 [14]

It would be c or 2 because x is your slope therefore your x-intercept.
so I would say c

5 0

3 years ago

Cedric completed the square for the quadratic expression 5x^2−40x+15 in order to determine the minimum value of the expression,

Olegator [25]

Answer:

Step 3 is not correct (should be $(x-4)^2$ , not $(x+4)^2$

Step-by-step explanation:

The expression that we have to simplify is:

$5x^2-40x+15$

We proceed step-by-step, in order to find the mistake did by Cedric:

1) First, we factorize the 5 outside:

$5(\frac{5x^2}{5}-\frac{40x}{5}+\frac{15}{5})=5(x^2-40x+3)$ --> this step is correct

2) We add +16 and -16 inside the brackets:

$5(x^2-8x+16-16+3)$ --> this step is correct

3) We rewrite the term $(x^2-8x+16)$ as the square of a bynomial, which is $(x-4)^2$ , so the expression becomes

$5((x-4)^2-16+3)$ --> we notice that this step is wrong: in fact, Cedric wrote $(x+4)^2$ , which is not correct.

4) Now we continue: we rewrite -16+3 as -13,

$5((x-4)^2-13)$

5) Finally, we multiply the 5 by the terms in the bracket:

$=5(x-4)^2-65$

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3 years ago