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evablogger [386]
4 years ago
12

3x-4y=-17 and 8x-3y=-7

Mathematics
1 answer:
erik [133]4 years ago
8 0
From first equation,
3x = 4y-17
x =(4y - 17) / 3 - - - - - - Third equation


Substitute third equation into second equation,
32y / 3 - 136 / 3 - 3y = - 7
23y /33 = 115 / 33
23y = 115
y = 5

Substitute y = 5 into first equation,
3x - 4y =-17
3x - 4(5) = - 17
3x - 20 = - 17
3x = 3
x = 1

Thus, x = 1 and y = 5.
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Midge arranges her Collection of 762 seashells into trays with 8 shells in each tray. Find the number of trays she needs.
lana [24]

Answer:

96 trays

Step-by-step explanation:

762 shells divided into 8 shells in each tray equals 95.25 but you cant have 95.25 trays so it'd be 96.

3 0
3 years ago
Solve for x: −2x + 5 < 7
hoa [83]
-2x + 5 < 7

-2x + 5 < 7
<u>        -5     -5   </u>       deduct 5 from both sides
-2x       < 2
<u>÷ -2        ÷ -2  </u>       divide both sides by negative 2. Because of the division 
 x          > -1          using a negative number, the sign is then reversed.
                             from < it becomes >.

The value of x should be greater than -1. It can be 0, 1, 2, so on... 

To check: Revert back to the original sign which is <.

x = 1
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2x + 5 < 7
-2(1) + 5 < 7
-2 + 5 < 7
3 < 7
7 0
3 years ago
What is the answer ​
Gnom [1K]

Answer:

lol ty for the points

Step-by-step explanation:

4 0
3 years ago
Imagine being so epic that youd help me solve this
Aleksandr [31]

Answer:

B

Step-by-step explanation:

the graph will shift right about the x-axis

right mean that we will minus from x

so it will be B

hope this helps  

8 0
3 years ago
Operation for <br><br>w/7 = 14<br><br>addition<br>subtraction<br>multiplication<br>division​
NikAS [45]

Answer: Multiplication

Step-by-step explanation:

Given

w/7=14

Multiply 7 on both sides

w/7 × 7=14 × 7

w=98

In order to isolate w on one side, we should times 7 as the numerator in order to eliminate the 7 in the denominator. To promise equality, we need to multiply 7 on both sides in order to isolate w and solve the equation.

<h2>Thus, it is multiplication.</h2>
4 0
3 years ago
Read 2 more answers
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