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2 years ago

Which equation has a graph that lies entirely above the x-axis?

Mathematics

2 answers:

Alinara [238K]2 years ago

8 0

Answer:

(Option C) y = (x – 7)2 + 7

Step-by-step explanation:

hope this helps!! have an amazing day <3

kogti [31]2 years ago

4 0

Answer:

Answer:

Option C.

Step-by-step explanation:

The vertex form of a parabola is

where, a is constant, (h,k) is vertex.

If a<0, then it is a downward parabola and if a>0, then it is an upward parabola.

A downward parabola never lies entirely above the x-axis.

First equation is

It is a downward parabola and vertex is (-7,7).

Second equation is

It is an upward parabola and vertex is (7,-7).

Third equation is

It is an upward parabola and vertex is (7,7).

Fourth equation is

It is a linear equation with y-intercept -7.

Only equation 3 is an upward parabola whose vertex lies above the x-axis.

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

19.5+24+7.5 = 19.5+__+24 = ___+24=___

Rasek [7]

Answer:

7.5, 27, 51

Step-by-step explanation:

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2 years ago

Read 2 more answers

9 + (1/2)^4x48 I couldn't find a correct answer for this.

Rufina [12.5K]

$9+ (\dfrac{1}{2} )^4 \times 48 = 9 + \dfrac{1}{16} \times 48 = 9 + 3 = 12$

Answer: 12

3 0

3 years ago

2, 6, 10, 14, ...

8090 [49]

The sequence can be represented by $2 + 4x$ , where $x$ is a whole number( $x \geq 0$ and $x$ is an integer). By this, we should be able to plug in some whole number x and be able to get these values if they are in the sequence. To test this, let's set these numbers equal to $2 + 4x$ and confirm that there is a whole number x which equals the values selected.

$2 + 4x = 90 \Rightarrow 4x = 88 \Rightarrow x = 22 \, \checkmark$

$2 + 4x = 150 \Rightarrow 4x = 148 \Rightarrow x = 37 \, \checkmark$

$2 + 4x = 160 \Rightarrow 4x = 158 \Rightarrow x = 39.5$

When trying 160 with our equation, we find that x doesn't equal a whole number, thus our answer is C, or 160. To confirm our answer, we can test 170 and 210 and confirm that they both give us a value for x which is a whole number.

$2 + 4x = 170 \Rightarrow 4x = 168 \Rightarrow x = 42 \, \checkmark$

$2 + 4x = 210 \Rightarrow 4x = 208 \Rightarrow x = 52 \, \checkmark$

6 0

3 years ago