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SCORPION-xisa [38]
3 years ago
15

Need help on this!!!

Mathematics
1 answer:
Helga [31]3 years ago
4 0

Answer:

Step-by-step explanation:

Range goes from the lowest point on a graph to the highest point, not including anything in between those 2 extremes. We will evaluate the quadratic for the values given. First f(2):

f(2)=(2)^2-5 so

f(2) = -1

Now, f(4):

f(4)=(4)^2-5 so

f(4) = 11

Now, f(7):

f(7)=(7)^2-5 so

f(7) = 44

The lowest y value is -1 and the highest is 44, so the range is from -1 to 44 (I can't tell which of your choices reflects that because it's too small!)

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What is the solution set of {x | x 5}?
german

Answer:

3. the numbers between -5 and 5

Step-by-step explanation:

Let set A= \{x| x>-5\} and set B=\{x | x.

The solution set of A and B is the solution set of A∩B

The solution set of A is all the real number x which is greater than -5.

The solution set of B is all the real number x which is less than 5.

Therefore, the solution set of A∩B is all the real numbers between -5 and 5.

Hence, option (3) is correct.

5 0
2 years ago
Solve using gaussian elimination and show ur work
jarptica [38.1K]

Add the last two equations to eliminate <em>x</em> :

(<em>x</em> - 2<em>y</em> - 3<em>z</em>) + (- <em>x</em> + <em>y</em> + 2<em>z</em>) = 0 + 3

- <em>y</em> - <em>z</em> = 3

<em>y</em> + <em>z</em> = -3

Subtract this from the first equation to eliminate <em>z</em>, then solve for <em>y</em> :

(2<em>y</em> + <em>z</em>) - (<em>y</em> + <em>z</em>) = -8 - (-3)

<em>y</em> = -5

Plug this into the first equation to solve for <em>z</em> :

2(-5) + <em>z</em> = -8

<em>z</em> = 2

Plug both of these into either the second or third equations to solve for <em>x</em> :

<em>x</em> - 2(-5) - 3(2) = 0

<em>x</em> = -4

7 0
3 years ago
In a chocolate chip cookie recipe flour,brown sugar, and chocolate chips are mixed in the ratio 5:3:4 if the total volume of the
mihalych1998 [28]

Answer:

240 mL.

Step-by-step explanation:

The following data were obtained from the question:

Ratio of Flour = 5

Ratio of brown sugar = 3

Ratio of chocolate = 4

Total volume = 720 mL

Next, we shall determine the total ratio. This can be obtained as follow:

Total ratio = ratio of flour + ratio of brown sugar + ratio of chocolate

Total ratio = 5 + 3 + 4

Total ratio = 12

Finally, we shall determine the volume of the chocolate chips in the mixture as shown below:

Volume of chocolate chips = ratio of chocolate /total ratio x total volume

Ratio of chocolate = 4

Total ratio = 12

Total volume = 720 mL

Volume of chocolate chips =..?

Volume of chocolate chips = ratio of chocolate /total ratio x total volume

Volume of chocolate chip = 4/12 x 720

Volume of chocolate chip = 240 mL

Therefore, the volume of the chocolate chips in the mixture is 240 mL.

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B2x%2B4%7D%7Bx%5E%7B2%7D-2x-8%20%7D" id="TexFormula1" title="\frac{2x+4}{x^{2}-2x-8 }
lisabon 2012 [21]

Answer:

\frac{2}{x-4}

Step-by-step explanation:

\frac{2x+4}{x^2-2x-8}

Factor both the numerator and denominator

\frac{2(x+2)}{(x-4)(x+2)}

The x+2 's cancel out

The equation in its simplest form is \frac{2}{x-4}

Hope this helps!

6 0
3 years ago
Your ship sinks and you swim to a nearby island. On this island, the inhabitants do not use money. The island residents use isla
natita [175]

Answer:

240 bananas

Step-by-step explanation:

You would need 8 sets of figs. 10 coconuts is equal to 25  figs so you need 80 coconuts. You would need enough bananas to get 4 sets of coconuts. 60*4 = 240

5 0
3 years ago
Read 2 more answers
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