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4 years ago

Which statements are true about the ordered pair (-1,-4) and the system of equations? x-y=3, 7x-y=-3

Mathematics

1 answer:

PtichkaEL [24]4 years ago

8 0

Option 1, 6, 3 are all correct

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Write a few sentences to end Sarah’s story. How many shark teeth did she find? How many shark teeth did John find? How much mone

timofeeve [1]

Answer:

4, 69, $0

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

what is the greatest common factor of two numbers is 4. The sum of the numbers is 76. What are the two numbers?

melisa1 [442]

Answer:

4 and 72

Step-by-step explanation:

8 0

3 years ago

Please help! Correct answer only!

Tcecarenko [31]

Answer:

<em>" Expected Payoff " ⇒ $ 1.56 ; Type in 1.56</em>

Step-by-step explanation:

Consider the steps below;

$Tickets That Can Be Entered - 1 Ticket,\\Total Tickets Entered - 1000 Tickets,\\\\Proportion - 1 / 1000,\\Money One ( First Ticket ) = 820 Dollars,\\Money One ( Second Ticket ) = 740 Dollars,\\\\Proportionality ( First ) - 1 / 1000 = x / 820,\\Proportionality ( Second ) - 1 / 1000 = x / 740\\\\1 / 1000 = x / 820,\\1000 * x = 820,\\x = 820 / 1000,\\x = 0.82,\\\\1 / 1000 = x / 740,\\1000 * x = 740,\\x = 740 / 1000,\\x = 0.74\\\\Conclusion ; " Expected Payoff " = 0.82 + 0.74 = 1.56$

<em>Solution; " Expected Payoff " ⇒ $ 1.56</em>

4 0

3 years ago

If the sides of a triangle have measures 3x + 4, 6x – 1 and 8x + 2, find all possible values of x.

marissa [1.9K]

Answer: x>-4/3

Step-by-step explanation:All sides must be greater of zero:

3x+4>0

3x> -4 Divide with 3

x> -4/3

6x-1>0

6x>1 Divide with 6

x>1/6

8x+2>0

8x> -2 Divide with 8

x> -2/8

x> -1/4

Least of that numbers is -4/3= -1.3333

x> -4/3 is solution

4 0

4 years ago

Read 2 more answers

Write the expression 2i^15-i^7 in the standard form a + bi

elixir [45]

$\bf 2i^{15}-i^7\qquad 
\begin{cases}
i^2=\sqrt{-1}\cdot \sqrt{-1}\implies \sqrt{(-1)^2}\implies -1\\\\
i^4=i^2\cdot i^2\implies -1\cdot -1\implies 1
\end{cases}\\\\
-----------------------------\\\\
2i^{4+4+4+2+1}-i^{4+2+1}\implies 2i^4i^4i^4i^2i^1-i^4i^2i^1
\\\\\\
(2\cdot 1\cdot 1\cdot 1\cdot -1\cdot i)-(1\cdot -1\cdot i)\implies -2i-(-i)
\\\\\\
-2i+i\implies -i\implies \boxed{0-i}$

7 0

3 years ago