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Solnce55 [7]
3 years ago
8

I need help on this question please help!!!!!

Mathematics
1 answer:
Tju [1.3M]3 years ago
7 0

Answer:cam

Step-by-step explanation:

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Solve for x. And graph 7(3x+4)+2<156
blsea [12.9K]

7(3 \times x + 4) + 2 < 156 \\ 21 \times x + 28 + 2 < 156 \\ 21 \times x + 30 < 156 \\ 21 \times x < 156 - 30 \\ 21 \times x < 126 \\ x  <   \frac{126}{21}  \\ x < 6

8 0
3 years ago
Solve the simultaneous equations by substitution<br> 4x+3y=-2<br> 3y=4-x
stiv31 [10]

Answer: x=-2 y=2

Step-by-step explanation:

I decided that isolating the y value of the second equation is the best way to start solving.

I divide 3 from both sides to get y= (4-x)/3. With this, I can substitute into the first equation. 4x+3(4-x)/3)=-2.

The multiplying the 3 by the denominator three cancels each other out to make:

4x+4-x=-2.

We subtract 4 on both sides and then subtract x from 4x.

We end up with 3x=-6. Then, we divide both sides by 3.

x=-2.

Now we substitute this into the second equation to solve.

3y=4-(-2)

This becomes 3y=4+2 which is 3y=6

We divide both sides by 3 to get y=2

We end up with x=-2 and y=2.

I hope you learned something :)

4 0
2 years ago
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igomit [66]
7/15 will be the most you can simplify
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A camera has a listed price of $760.95 before tax. If the sales tax rate is 7.25% , find the total cost of the camera with sales
Contact [7]

Answer:

After sales tax is applied, the camera will cost $816.12! The sales tax will be $55.17.

3 0
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