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Igoryamba
3 years ago
12

-4x+ 8x2 – 2x3 + 5 this is algebra

Mathematics
2 answers:
Serggg [28]3 years ago
7 0

Answer:

-65

Step-by-step explanation:

use Khan academy it's very helpful

denis23 [38]3 years ago
7 0

Answer:

14x+5

Step-by-step explanation:

4x+8x2-2x3+5

⬇️Simplify (for example 8x x 2 = 16x)

4x+16x-6x+5

⬇️ Collect like terms (bold)

20x-6x+5

⬇️

14x+5

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213 is 30% of what amount
WITCHER [35]
Start by calling the unknown amount 'x'. We can then set up a relationship to represent the question:

213 = (30\%) \times x
or
213=0.3x

and then solve for x, by dividing both sides of our equation by 0.3

\frac{213}{0.3}=\frac{0.3x}{0.3}
710=x

213 is 30% of 710

To check: 710 \times 0.3 = 213
3 0
3 years ago
Need help doing this, show steps if you could
Anna71 [15]

Answer:

p = (0.5 , 5)

Step-by-step explanation:

D(-6 ,4)    E(7 ,6)

For the line FP  to be a median, the point p must have the intermediate value at x and at y between points D and E

p = (Dx + Ex)/2 , (Dy + Ey)/2

p = (-6 + 7)/2 , (4 + 6)/2

p = 1/2 , 10/2

p = (0.5 , 5)

This is because for a medium to be the point p has to be right in the middle of the other 2 vertices

6 0
3 years ago
Tickets to the zoo cost $12 for adults and $8 for children. The school has a budget of $240 for the field trip. An equation repr
Oxana [17]

Answer:

18 children

Step-by-step explanation:

Given

240 = 12x +8y

<em>Required (missing part of the question):</em>

<em>Number of children that will be able to go to the zoo if 8 adult tickets are purchased</em>

 

<em>The graph is missing. However, the question can be solved without the graph.</em>

<em />

From the question and equation, we can deduce the following:

  • x represents adults
  • y represents children

So, when 8 adult tickets were sold.

This means

x = 8

Substitute 8 for x in 240 = 12x +8y

240= 12 * 8 + 8y

240= 96+ 8y

Subtract 96 from both sides

240 - 96 = 96 - 96 + 8y

144 =  8y

8y = 144

Solve for y

y= \frac{144}{8}

y= 18

<em>This means that 18 children will be able to go</em>

5 0
2 years ago
What is the rate between 78 miles and 3 gallons of gas
Allisa [31]

Answer:

26 miles per gallon

Step-by-step explanation:

8 0
3 years ago
What is the value of y in the equation 2 + y = −3?
Ket [755]
I’ve done these questions before and i’ve gotten confused because I have trouble with nagative numbers but i’ve gotten better st it. It’s -5
8 0
3 years ago
Read 2 more answers
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