3 years ago

Write a multiplication sentence to describe each model

Mathematics

1 answer:

Delicious77 [7]3 years ago

4 0

No picture? I can help but I need you to explain more lol

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Find the distance between the points given.<br><br> (-3, 2) and (9, -3)

g100num [7]

The distance will be given by the equation;
D= $\sqrt{( x_{1} - x_{2} )^{2} +( y_{1} - y_{2} )^{2} }$
D= $\sqrt{ (-3-9)^{2}+( 2--3)^{2} }$
D= $\sqrt{ (-12)^{2} + (5)^{2} }$
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D=13 units

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3 years ago

Which are the solutions of x² = 19x + 12

Sever21 [200]

Answer:

$\{x=\frac{19-\sqrt{409} }{2}\ , \ x=\frac{19+\sqrt{409} }{2}\}$

Step-by-step explanation:

x² = 19x + 12

⇔ x² - 19x - 12 = 0

Calculating the discriminant :

b² - 4ac = (-19)² - 4×1×(-12) = 409

The discriminant is positive ,then the equation has two solutions.

$x=\frac{19-\sqrt{409} }{2} \ \ or\ \ x=\frac{19+\sqrt{409} }{2}$

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2 years ago

Decompose 3/8 as the sum of unit fractions

bearhunter [10]

Unit fractions are fractions with a 1 as the numerator(number on top)
so 3/8 equals 1/8+1/8+1/8

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3 years ago

Is 9/15 irrational??

Mariana [72]

No because irrational cant be a simple fraction and 9/15

is 0.6

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7.suppose you have a 6-sided number cube and a coin. Event A is that you roll the number cube and land on 1, and event B is that

kykrilka [37]

Event A - roll a 6-number cube
Event B - flip a coin

*Independent events *not mutually exclusive events

Both events are independent and not mutually exclusive.
Independent event means that one can happen without relying on the outcome of the other one.
Not mutually exclusive event means that both can happen at the same time.

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