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2 years ago

Answer for both and explain B 20+ points

Mathematics

1 answer:

Alexxx [7]2 years ago

6 0

Answer:

Given function:

g(x) = x² - 6x + c

c = 2

Th x-intercept found when g(x) = 0

x² - 6x + 2 = 0

Solve the equation to find the values of x:

x² - 6x + 2 = 0
x² - 6x + 9 = 7
(x - 3)² = 7
x - 3 = ±√7
x = 3 ± √7

The x-intercepts are (3 + √7, 0) and (3 - √7, 0)

c = 10

Solve as above:

x² - 6x + 10 = 0
x² - 6x + 9 + 1 = 0
(x - 3)² = -1

The left side is a square of a number which is always positive, the right side is negative.

It means there is no solution, so no-x-intercepts.

The graph of the function lies above the x-axis.

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Which is greater: 25% of 15 or 15% of 25? Explain your reasoning using algerbreaic representations or visual models

Bingel [31]

25% of 15 is the same as 15% of 25
25%=25/100
25% of 15=(25/100)15=(25*15)/100

15%=15/100
15% of 25=(15/100)25=(25*15)/100

Therefore:
25% of 15=15% of 25
because:
(25/100)15=(15/100)25
(25*15)/100=(25*15)/100
3.75=3.75

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2 years ago

Divide 1.20m in the ratio 2:3:4

viktelen [127]

$x = 1,2 : 9 = \frac{2}{15} \\2x:3x:4x\\ \frac{4}{15} : \frac{2}5} : \frac{8}{15}$

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3 years ago

Does anyone know how to solve this

Fofino [41]

Here is the answer the app is called cymath btw

3 0

2 years ago

If p(x)=x^2+x+1 and q(x)=3x^2-1, find p(7)

Delvig [45]

Answer:

p(7) = 57

Step-by-step explanation:

Because this is a function, all you have to do is input 7 for x like so:

p(x)=x^2+x+1 ---------------> p(7)=7^2+7+1

so 49 + 8

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7 0

2 years ago

Studies show that a typical giant hummingbird can flap its wings once in 0.08 of a second.

Licemer1 [7]

Answer:

a. 90

b. 360

Step-by-step explanation:

The time taken by humming bird to flap its wings= 0.08 sec

by flying 7.2 seconds a typical giant hummingbird flap its wings $\frac{7.2}{0.08}$ times

= 90 times

Since, A ruby-throated hummingbird can flap its wings 4 times faster than a giant hummingbird, it will flap its wings in every 0.02 sec

so in 7.2 seconds it will flap $\frac{7.2}{0.02}$ times = 360 times

4 0

3 years ago