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2 years ago

Elise said that 0.2 equals 2% use numbers and words to explain her mistake

Mathematics

2 answers:

Rama09 [41]2 years ago

7 0

.2 is equal to 20% not 2%, because .2 is two tenths

artcher [175]2 years ago

4 0

Her mistake was she didnt move the decimal over two places only one, whick caused her to get 2%. In order for it to be correct she should have moved it two times and it would be 20%.

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Will give brainliest.

Dennis_Churaev [7]

Pretty sure it's A. (X times .5 equals Y)

8 0

2 years ago

-/2 points

Rom4ik [11]

Answer:

Part 1) The domain of the quadratic function is the interval (-∞,∞)

Part 2) The range is the interval (-∞,1]

Step-by-step explanation:

we have

$f(x)=-x^2+14x-48$

This is a quadratic equation (vertical parabola) open downward (the leading coefficient is negative)

step 1

Find the domain

The domain of a function is the set of all possible values of x

The domain of the quadratic function is the interval

(-∞,∞)

All real numbers

step 2

Find the range

The range of a function is the complete set of all possible resulting values of y, after we have substituted the domain.

we have a vertical parabola open downward

The vertex is a maximum

Let

(h,k) the vertex of the parabola

The range is the interval

(-∞,k]

Find the vertex

$f(x)=-x^2+14x-48$

Factor -1 the leading coefficient

$f(x)=-(x^2-14x)-48$

Complete the square

$f(x)=-(x^2-14x+49)-48+49$

$f(x)=-(x^2-14x+49)+1$

Rewrite as perfect squares

$f(x)=-(x-7)^2+1$

The vertex is the point (7,1)

therefore

The range is the interval

(-∞,1]

6 0

2 years ago

F= z-g/n<br> solve for z

Vera_Pavlovna [14]

Z= F+ (g/n) (you’re welcome)

7 0

3 years ago

Find the missing measure in a right triangle if a= 9 ft and b = 12 ft.

Lena [83]

Answer:

c = 15 ft

Step-by-step explanation:

a^2 + b^2 = c^2

9^2 + 12^2 = c^2

c^2 = 225

c = √225

5 0

3 years ago

in a sale, there is twenty-five per cent off all prices. a chair costs £45 in the sale how much was it before the sale

ryzh [129]

First, you need to know what is 25 percent of 45, so you do 45 times 25 divided by 100 and you are going to get 11.25. Then you take the 45 and subtract those 11.25, which will give you 33.75 because it's saying how much was it before the sale. That's your final answer.

6 0

3 years ago

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