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Zigmanuir [339]
3 years ago
8

Solve the given system, using the substitution method. y = 3x – 4 9x – 3y = 14

Mathematics
1 answer:
bulgar [2K]3 years ago
5 0
y=3x-4 \\
9x-3y=14 \\ \\
\hbox{substitute 3x-4 for y in the 2nd equation:} \\
9x-3(3x-4)=14 \\
9x-9x+12=14 \\
12=14 \\
not \ true \\ \\
\boxed{\hbox{no solution}}
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In 2015 there were approximately 30700 firearm fatalities express this quantity in deaths per hour
dmitriy555 [2]
There are 8760 hours in a year so 30700÷8760= 3.5 which if you need a whole number would round up to approximately 4 deaths an hour
4 0
3 years ago
3. Find the value of p in each of the following when f(x) is divided by d(x), with the help of remainder theorem:
ipn [44]

The remainder theorem says that dividing a polynomial <em>f(x)</em> by a 1st-degree polynomial <em>g(x)</em> = <em>x</em> - <em>c</em> leaves a remainder of exactly <em>f(c)</em>.

(a) With <em>f(x)</em> = <em>px</em> ³ + 4<em>x</em> - 10 and <em>d(x)</em> = <em>x</em> + 3, we have a remainder of 5, so

<em>f</em> (-3) = <em>p</em> (-3)³ + 4(-3) - 10 = 5

Solve for <em>p</em> :

-27<em>p</em> - 12 - 10 = 5

-27<em>p</em> = 27

<em>p</em> = -1

(b) With <em>f(x)</em> = <em>x</em> + 3<em>x</em> ² - <em>px</em> + 4 and <em>d(x)</em> = <em>x</em> - 2, we have remainder 8, so

<em>f</em> (2) = 2 + 3(2)² - 2<em>p</em> + 4 = 8

-2<em>p</em> = -10

<em>p</em> = 5

(you should make sure that <em>f(x)</em> was written correctly, it's a bit odd that there are two <em>x</em> terms)

(c) <em>f(x)</em> = 2<em>x</em> ³ - 4<em>x</em> ² + 6<em>x</em> - <em>p</em>, <em>d(x)</em> = <em>x</em> - 2, <em>R</em> = <em>f</em> (2) = 18

<em>f</em> (2) = 2(2)³ - 4(2)² + 6(2) - <em>p</em> = 18

12 - <em>p</em> = 18

<em>p</em> = -6

The others are done in the same fashion. You would find

(d) <em>p</em> = 14

(e) <em>p</em> = -4359

(f) <em>p</em> = 10

(g) <em>p</em> = -13/2 … … assuming you meant <em>f(x)</em> = <em>x</em> ⁴ + <em>x</em> ³ + <em>px</em> ² + <em>x</em> + 20

8 0
3 years ago
An airplane cruises 1 kilometer in 1/12 of a minute. what is its cruising speed?
rewona [7]

Answer:

An airplane cruises 1 kilometer in 1/12 of a minute. What is its cruising speed?<u>200</u>

5 0
3 years ago
The three cards below form a number pattern. The first two cards have been turned over to show their numbers
Korvikt [17]

Answer:

Most likely answers are either 6 or 8.

Step-by-step explanation:

The sequence could be of all even numbers, so 2, 4, 6, 8, etc.

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Since there are an infinite number of sequences that fit the pattern, you just have to choose the most likely.

7 0
3 years ago
Read 2 more answers
2/3x+14-3x&gt;-7
Ray Of Light [21]

Answer:

\large\boxed{x

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
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