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3 years ago

Quadratic functions. Did I do it right?

Mathematics

1 answer:

patriot [66]3 years ago

6 0

Answer:

1) The graph is opening upwards

2) Axis of symmetry is x=-2

3) Vertex: (-2, 1) minimum y=1

4) y intercept is (0, 9)

5) domain: x|x ∈ R (All real numbers)

6) Range y|y ≥ 1

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What is the solution to the equation 5x+4=7

Orlov [11]

X=3/5
do you need an explanation?

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3 years ago

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If a toy truck is created in a 2:9 scale, and the wheel of the toy is 14cm wide, how wide is the actual wheel?

lesya [120]

Answer:63 cm

Step-by-step explanation:

Given

The scale of creation is 2:9

The width of the toy wheel is 14 cm

Suppose x is the actual width of the truck

$\therefore \dfrac{2}{9}=\dfrac{14}{x}\\\\\Rightarrow x=\dfrac{9}{2}\times 14=63\ cm$

Thus, the width of actual truck is 63 cm

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3 years ago

Is (3,-4) a solution of x=-4

jekas [21]

Answer:

Step-by-step explanation:

3 is the x coordinate/ integer and -4 is the y coordinate and the integer so it wouldn't make sense

x= 3 is a solution

and id you don't understand the first thing i said watch this

#1. 3, - 4

#2. x= - 4

#3. substitute/replace the x with what the x coordinate is

#4. it will be 3= - 4

#5. as you can see the numbers don't equal each other so it's a no solution

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3 years ago

Slove for y . 3x+2y=-6

borishaifa [10]

Answer:

y = -(6+3x)/2

Step-by-step explanation:

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3 years ago

An earthquake near the Philippines measured 5.1 on the Richter scale. Use the formula R=log(A/Ao) to determine approximately how

hammer [34]

Answer:

If R is equal 5.1, Let x be A/A0

Then we have logx=5.1

Solving this we have x=125893

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3 years ago