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seropon [69]
3 years ago
7

Plzzzzz Help I really need help

Mathematics
1 answer:
Tatiana [17]3 years ago
7 0

Answer:

(1.5,-3) and (4.5,-3)

Step-by-step explanation:

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Miguel drove 737 miles in 11 hours.
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7 hours , to find the amount of miles in one hour you do 737 divided by 11. Then you take that (67) and divide it by 469

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Dakota earned ​$7.50 in interest in Account A and ​$15.00 in interest in Account B after 18 months. If the simple interest rate
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Step-by-step explanation: I don't know.

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Step-by-step explanation:

8 0
3 years ago
Solve the system of equations by substitution 3x+y=9z
poizon [28]

Answer:

x = 1.27

y = 5.18

Step-by-step explanation:

to solve this system of  equation by simultaneous equation we say that let

3x+y=9.............................. equation 1

-5x+2y=4 .......................... equation 2

from equation 1

3x+y=9.............................. equation 1

y = 9 -3x.............................. equation 3

substitute the value of y = 9 -3x into equation 2

-5x+2y=4 .......................... equation 2

-5x + 2( 9 -3x) = 4

-5x + 18 - 6x = 4

collect the like terms

18 - 4 = 6x + 5x

14 = 11x

divide both side by 11

14/11 = 11x/11

x = 14/11

x = 1.27

put the value of x = 1.27 into  equation 3

y = 9 -3x.............................. equation 3

y = 9 - 3( 1.27)

y = 9 - 3.82

y = 5.18

<em>to check if you are correct put the value of x and y into either equation 1 or equation 2.</em>

<em>3x+y=9.............................. equation 1</em>

<em>3( 1.27) + 5.18 = 9</em>

<em>3.81 + 5.18 = 9</em>

<em>9 = 9</em>

3 0
3 years ago
Select all of the expressions that are equal to the product 10x^9 and 60x^-6
OlgaM077 [116]
(10x^9)(60x^[-6]) = 600x^3 (answer)              Note that x^a*x^b = x^(a+b).
3 0
3 years ago
Read 2 more answers
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