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3 years ago

Hi please help I have no idea how to even start my work, someone help!!!.

Mathematics

1 answer:

Butoxors [25]3 years ago

7 0

Answer:

x is greater than -3 and it is also less than or equal to 2

-3 < x ≤ 2

Step-by-step explanation:

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Using the substitution P=1/x and Q=1/y.

erma4kov [3.2K]

Step-by-step explanation:

$2p + q = 3 \\ p - 5q = 7 \\ \\ multiply \: the \: second \: equation \: by \: 2 \\ 2p - 10q = 14 \\ 2p - 10q - (2p + q) = 14 - 3 \\ 2p - 10q - 2p - q = 11 \\ - 11q = 11 \\ q = - 1 \\ \\ 2p + q = 3 \\ 2p - 1 = 3 \\ 2p = 4 \\ p = 2$

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3 years ago

What is the answer for ½+¼⅝

Sphinxa [80]

Answer:

1 3/8

$SOLUTION$

$add \: \frac{1}{2} + \frac{1}{4} + \frac{5}{8}$

$= \frac{4 + 2 + 5}{8}$

$= \frac{11}{8}$

=1 3/8

I hope it helps

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3 years ago

Read 2 more answers

Which table describes the behavior of the graph of f(x) = 2x3 – 26x – 24?

In-s [12.5K]

Answer:

For x∈ {-∞,-3} y<0, below x-axis

x∈ {-3,-1} y>0, above x-axis

x∈ {-1,4} y<0, below x-axis

x∈ {4,∞} y>0, above x-axis

Step-by-step explanation:

f(x)= $2x^{3}-26x-24$

$2x^{3}-26x-24$ =0

$2x^{3}-26x-24=0\\2x^{3}-2x-24x-24=0\\2x(x^{2} -1)-24(x+1)=0\\2x(x+1)(x-1)-24(x+1)=0\\(x+1)(2x^{2} -2x-24)=0\\=> x+1=0 => x_{1}=-1\\$

$=> 2x^{2} -2x-24=0\\=>2(x^{2} -x-12)=0\\=> x^{2} -x-12=0\\=> x^{2} -4x+3x-12=0\\=> x(x-4)+3(x-4)=0\\=> (x-4)(x+3)=0\\$

$=> x-4=0\\=> x_{2}=4\\=> x+3=0\\=>x_{3}=-3\\$

For x∈ {-∞,-3} y<0, below x-axis

x∈ {-3,-1} y>0, above x-axis

x∈ {-1,4} y<0, below x-axis

x∈ {4,∞} y>0, above x-axis

7 0

4 years ago

Read 2 more answers

Ann purchased a prepaid phone card for 20$. Long-distance calls cost 12 cents a minute using this card. Ann used her card only o

Lorico [155]

27 minutes
subtract 16.76 from 20, your answer divide by .12

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3 years ago

Triangle inequalities? Write >, <, =, or NC?

lord [1]

_Award brainliest if helped!
ST > MN
BA > BC
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3 years ago