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Veronika [31]
2 years ago
5

Simplify the following given - 3x² + 2x-4 and x =-2.

Mathematics
1 answer:
Stels [109]2 years ago
7 0

Answer:

-20

Step-by-step explanation:

Substitute the value of x (-2) into the equation.

-3(-2) square +-4-4

-3(4) -8

-12-8

-20

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a city that has an elevation of 15 meters is closer to sea level than a city with an elevation of -10 true or false? explain you
12345 [234]

Answer:

False

Step-by-step explanation:

At sea level, elevation is 0. This means that we can portray sea level as being the midpoint of distances below sea level and distances above sea level.

Thus, a distance of 1 m below sea level = - 1 is equivalent to a distance of 1 m above sea level albeit in opposite directions.

Hence, an elevation of 15m above sea level is greater in distance Than an elevation of - 10 m below sea level because the absolute value of 15 is greater than the absolute value of 10.

|15 - 0|= 15

|-10 - 0| = 10

Hence, elevation of - 10 below Sea level is closer to sea level than elevation of 15 above sea level

5 0
2 years ago
A one-topping pizza costs $15.00. Each additional topping costs $1.25. Let x be the number of additional toppings. You have $20
pantera1 [17]
So,

Our total will be equal to 20.  If we want 1 additional topping, we will have an additional $1.25.  <span>If we want 2 additional toppings, we will have an additional $2.50.  So we can just multiply the number of additional toppings by 1.25 to get the additional amount.

1.25x

However, you will have already spent $15.

1.25x + 15 = 20

This is option B.

P.S. You will be able to put exactly 4 additional toppings.</span>
3 0
2 years ago
Read 2 more answers
Find the slope of the line that contains the following points. R(-3, 5), S(3, -2) 7/6 7/6 undefined
Musya8 [376]

Answer:

-\frac{7}{6}

Step-by-step explanation:

We can use the slope formula for the segment that joins any two points (x_1, y_1) and (x_2, y_2):

slope=\frac{y_2-y_1}{x_2-x_1}

which in our case gives:

slope=\frac{y_2-y_1}{x_2-x_1}  = \frac{-2-5}{3-(-3)}=\frac{-7}{6} =-\frac{7}{6}

5 0
2 years ago
12p &lt; 96<br> A. p &lt; 8<br> B. p &lt; 108<br> C. p &lt; 84<br> D. p &gt; –8
inessss [21]

Solution:

<u>Note that:</u>

  • Given inequality: 12p < 96

<u>Dividing both sides by 12:</u>

  • 12p < 96
  • => 12p/12 < 96/12
  • => p < 8

Correct option is A.

<u />

3 0
2 years ago
Read 2 more answers
Simplify (5n^4)^-3. Assume n = 0.
denpristay [2]

Answer:

0

Step-by-step explanation:

5*0=0

0^4=0

0^-3=0

8 0
2 years ago
Read 2 more answers
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