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2 years ago

Question 11 of 25

Mathematics

1 answer:

malfutka [58]2 years ago

4 0

Answer:

Step-by-step explanation:

simple : when we have a point defined as (1, 4), it means x = 1, y = 4.

and since the point is on the graph of a function/equation it means that when we use x = 1 and calculate the equation, we get 4 as result (= y). so yes, that means that both sides of the "=" sign are indeed equal for this pair of values, which makes the equation true.

but there will be usually many other pairs that do that too.

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Determine which equation has exactly one real solution. PLS HELPP

sergey [27]

Answer:

b) $4x^2-12x+9=0$

Step-by-step explanation:

We can use the discriminant $b^2-4ac$ to determine how many real solutions a quadratic equation in the form $ax^2+bx+c=0$ has.

discriminant > 0 ⇒ 2 real solutions
discriminant = 0 ⇒ 1 real solution
discriminant < 0 ⇒ no real solutions

$5x^2+9x-4=0$

$b^2-4ac=9^2-4(5)(-4)=161 > 0\implies \textsf{2 solutions}$

$4x^2-12x+9=0$

$b^2-4ac=(-12)^2-4(4)(9)=0 \implies \textsf{1 solution}$

$-9x^2+6x+1=0$

$b^2-4ac=6^2-4(-9)(1)=72 > 0 \implies \textsf{2 solutions}$

$-2x^2-7=0$

$b^2-4ac=0^2-4(-2)(-7)=-56 < 0 \implies \textsf{no solutions}$

4 0

1 year ago

Fresh side grocery sells 7 bagels for $4.41. value mart sells 5 bagels for $3.60. how do the unit rates compare?

Reptile [31]

Fresh Side : 4.41 / 7 = 0.63 per bagel
Value Mart : 3.60 / 5 = 0.72 per bagel

Fresh Side bagels are a better buy being that each bagel cost 0.63 compared to the bagels at Value Mart, which cost 0.72 per bagel.

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2 years ago

Identify the value of p. p = 11 p = 10 p = 12 p = 13

andrezito [222]

Answer:

Step-by-step explanation:

5^2 + p^2 = (p+1)^2

25 + p^2 = p^2 + 2p + 1

25 = 2p + 1

24 = 2p

12 = p

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2 years ago

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It is important to keep the same tense in your business writing, because otherwise your readers may ______.

Goshia [24]

It is important to keep the same tense in your business writing, because otherwise your readers may misinterpret what you are trying to convey. Not having a uniform form of tense would make the writing confusing for the reader. Hope this helps. Have a nice day.

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2 years ago

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A bowl of spaghetti contains 5 grams of fiber. It is recommended for a person to eat 34 grams of fiber in a day. If you ate 3.5

puteri [66]

Answer: 51 %

Step-by-step explanation:

3.5 * 5 = 17.5

17.5 = x/100 * 34

17.5 = 34x/100

17.5 * 100 = 34x

1750 = 34x

x = 1750/34

x = 51.47

rounded to 51%

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3 years ago