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2 years ago

Solving quadratic equations using the quadratic formula.

Mathematics

1 answer:

mixer [17]2 years ago

8 0

Answer:

what is there supposed to be a picture

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What is the answer to − 4/7 = 5/2t ( its a one step equation)

nata0808 [166]

The answer to this equation would be -8/35

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3 years ago

A traintravels 200 kilometers in 2.5 hours. whatis the trains average speed per hour

marusya05 [52]

I think it may be 80 km/h?

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3 years ago

F(x) = -2x - 1; Find f (x - 4)

qaws [65]

Answer:

if f(x-4) then we should put x-4 where the x is spouse to be so;

-2(x-4)-1 =

-2x + 8 - 1 =

-2x + 7

5 0

3 years ago

Question number 8. Prove that 3 + √5 is an irrational number.

Marina86 [1]

Answer :

Let's assume the opposite of the statement i.e., 3 + √5 is a rational number.

$\\ \sf \: 3 + \sqrt{5} = \frac{a}{b} \\ \\ \qquad \: \tiny \sf{(where \: \: a \: \: and \: \: b \: \: are \: \: integers \: \: and \: \: b \: \neq \: 0)} \\$

$\\ \sf \: \sqrt{5} = \frac{a}{b} - 3 = \frac{a - 3b}{b} \\$

Since, a, b and 3 are integers. So,

$\\ \sf \: \frac{p - 3b}{b} \\ \\ \qquad \tiny \sf{ \: (is \: \: a \: \: rational \: \: number \:) } \\$

Here, it contradicts that √5 is an irrational number.

because of the wrong assumption that 3 + √5 is a rational number.

$\\$

Hence, 3 + √5 is an irrational number.

7 0

3 years ago

To convert 132 milligrams to grams, you can set up the proportion x/132 mg = 1,000/ 1 g

marin [14]

Answer:

FALSE

Step-by-step explanation: You can convert 132 milligrams by using the KHDUDCM(King Henry Died Unusually Drinking Chocolate Milk) And you will have to add three zeros to 132. (I might be incorrect)

5 0

2 years ago

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