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2 years ago

Tell whether the equation is true. Justify your answer.24x3+(15-7)÷2=8x9+12÷2

1 answer:

4 0

False
Because the left side comes out to a sum of 40 while 15-7 equals 8 and 24 times 3 equals 72 72 plus 8 equals 80 divided by 2 equals 40 and 8 times 9 equals 72 plus 6 equals 78 plus 6 equals 84

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Kobotan [32]

$| - 2 = 2|$
1/2<|-2|

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3 years ago

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What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = x2 − 4x + 5, and what does it mean about the num

sleet_krkn [62]

Answer:

The discriminant is −4, so the equation has no real solutions.

Step-by-step explanation:

In the equation 0 = x² - 4x + 5, a is 1, b is -4, and c is 5.

Plug in these values into b² - 4ac, and simplify:

b² - 4ac

(-4)² - 4(1)(5)

16 - 20

= -4

So, the discriminant is -4. This means that the equation has no real solutions, because the discriminant is a negative number.

The correct answer is that The discriminant is −4, so the equation has no real solutions.

6 0

2 years ago

Solve for x. 5 = − 3 9 x

IgorLugansk [536]

Answer:

x = -5/27

Step-by-step explanation:

5 = − 3 · 9x; x = -5/27

6 0

3 years ago

At the movie theatre, child admission is $5.80 and adult admission is $9.60. On Thursday, 167 tickets were sold for a total sale

saveliy_v [14]

Answer:

93 adult tickets

Step-by-step explanation:

Let 'a' represent the number of adult tickets sold. Then total revenue was ...

9.60a +5.80(167 -a) = 1322

3.80a = 353.40 . . . . . . . . . . subtract 968.60, collect terms

a = 93 . . . . . . . . . . divide by 3.8

93 adult tickets were sold that day.

74 child tickets were sold

8 0

2 years ago

Factor x3 – 7x2 – 5x + 35 by grouping. What is the resulting expression?

Aliun [14]

Answer:

$(x-7)(x-\sqrt{5})(x+\sqrt{5})$

Step-by-step explanation:

The given expression is

$x^3-7x^2-5x+35$

Factor the first two and the last two.

$x^2(x-7)-5(x-7)$

$(x-7)(x^2-5)$

Apply difference of two squares to the leftmost factor.

$(x-7)(x-\sqrt{5})(x+\sqrt{5})$

7 0

2 years ago

Read 2 more answers