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Question 5 of 10

1 answer:

kati45 [8]3 years ago

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Answer:

which class are you which class question is this

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Evaluate 3a+15+bc−6, when a=7, b=3, and c=15.<br><br> Enter your answer in the box.

melamori03 [73]

I think it's 75.
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5 0

3 years ago

Read 2 more answers

(-59)-(-18)/(+3)+(-2)(+4)+-27-(-3)

mojhsa [17]

-41/25 I believe, I'm not sure why you put some addition signs in the inside of parentheses

8 0

3 years ago

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A student works for 80 hours each month and plans to work for 5 hours each day, but only on days when scheduled to work. The fun

Greeley [361]

Answer:

C. The value of f (4) is 60, and it represents the number of hours of work remaining for the month after working for 4 days

Step-by-step explanation:

So 5 time 4 equals 20...!

80 minus 20= 60

3 0

3 years ago

A bag of rice weighs 3.18 pounds . find it’s mass in kilograms

LekaFEV [45]

The mass in kilograms would be: 1.442424

7 0

3 years ago

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What is the value of discontinuity of x^2+8x+4/x^2-x-6? Choices:

Morgarella [4.7K]

Answer:

-2

Step-by-step explanation:

Hello,

First of all, let's check the denominator.

$x^2-x-6 \ \ \text{ *** How to factorise it ...? ***}\\\\\text{*** The product of the roots is -6=-2*3 and their sum is 1 ***}\\\\x^2-x-6=x^2-3x+2x-6=x(x-3)+2(x-3)=(x+2)(x-3)$

Now, let's see the numerator.

$x^2+8x+4 \ \text{ *** -2 is not a zero as ***}\\\\(-2)^2+8*(-2)+4=4-16+8=-4\\\\\text{*** 3 is not a zero as ***}\\\\3^2+8*3+4=9+24+4=37\\$

So we cannot factorise the numerator with (x+2) or (x-3)

Then, -2 and 3 are the the discontinuities of the expression.

There is only -2 in the list, this is the correct answer.

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

3 0

3 years ago