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3 years ago

An irrational number can be a repeating decimal. True or false?

Mathematics

2 answers:

vladimir2022 [97]3 years ago

8 0

True. An irrational number can be a repeating decimal.

Temka [501]3 years ago

8 0

It is False because,an irrational number can not be a repeating decimal

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What is the discriminant of the quadratic equation 6x2 + x - 8 = 0?

Luda [366]

<h2>Answer:-193</h2>

Step-by-step explanation:

<h3>Given equation:- 6x² + x - 8 = 0</h3>

we know that the discriminant of a quadratic is the expression inside the radical of the quadratic formula.

6x² + x - 8 = 0
b²-4(ac)
here a= 6,b=1,c=-8
(1)²-4(6×(-8))
1-4(-48)
1+192
193

All the best!

3 0

3 years ago

Which of these products is negative? Select all that apply.

Sedaia [141]

Answer:

Positive/negative = negative

Negative/positive = negative

So -2 ÷ 8 and 15 ÷ (-5) are going to have negative quotients.

Let me know if this helps!

3 0

3 years ago

A car traveled 212 km in 5 hours what was the cars average speed

Zepler [3.9K]

Answer:

42.4 mph

Step-by-step explanation:

5÷212= 42.4mph (average speed)

4 0

2 years ago

A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a red marble and

Gwar [14]

The answer will be B.
First you need to find the probability of the red marbles which is 5/12 because there is 5 marbles and if you add they up there would be 12. Then you find the probability of the green marbles which is 2/12. After that you need to multiply them. 5/12 × 2/12. Your answer will be 10/144 but then you can simply by 2.
So your answer will be 5/72.
Hope this helped.

3 0

4 years ago

Garrrrryy no need to show work two questions thankks

irakobra [83]

1. $x^2-x-72=0$
$\Delta=(-1)^2-4*1*(-72)=1+288=289$
$\sqrt{\Delta}=17$
$x_1=\frac{1-17}{2}=-8$
$x_2=\frac{1+17}{2}=9$

2. $f(x)=x^2+12x+20$
$\Delta=144-80=64$
$\sqrt{\Delta}=8$
$x_1=\frac{-12-8}{2}=-10$
$x_2=\frac{-12+8}{2}=-2$

8 0

4 years ago