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Leni [432]
3 years ago
5

Y=-7x+3 y=-x-3 Find the solution to the system of equations

Mathematics
1 answer:
Phoenix [80]3 years ago
8 0
Just set the equations equal to each other
(1,-4)
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Find the product.
4vir4ik [10]
Answer :

6{y}^{4} {z}^{2} + 12 {y}^{3} {z}^{2}-3 {y}^{3} {z}+3 {y}^{2} {z}^{2}

Step-by-step explanation :

To find the product of

3 {y}^{2} z(2 {y}^{2} z + 4yz - y + z)

First we expand the bracket ,

it implies that, we use the expression outside the bracket to multiply individual expressions inside the bracket.

Hence

3 {y}^{2} z(2 {y}^{2} z + 4yz - y + z)

= 3 {y}^{2} z(2 {y}^{2} z) + 3 {y}^{2} z(4yz) - 3 {y}^{2} z(y )+3 {y}^{2} z( z)

we now apply the law of indices

{a}^{m} \times {a}^{n} = {a}^{m+n}

meaning, when you are multiplying two expressions with the same bases , repeat one of the bases and add the exponents.

Then, simplify to obtain

= 6{y}^{4} {z}^{2} + 12 {y}^{3} {z}^{2}-3{y}^{3} {z}+3 {y}^{2} {z}^{2}
3 0
3 years ago
I need help with number 12
mestny [16]
(r - s)³ + r²
= (-3 - (-4))³ + (-3)²
= (-3 + 4)³ + 9
= 1³ + 9
= 1 + 9
= 10
6 0
3 years ago
A boat costs $19,200 and decreases in value by 12% per year. How much will the boat be worth after 5 years?
zhannawk [14.2K]
<span>If it decreases by 12 percent, you do 19,200x.12 which is 2,304. You subtract that from 19,200 which is 16,896. You multiply that by .12 which is 2,027.52 and subtract that from 16,896 which is 14,868.42. You do that three more times and there's your answer.


</span>
6 0
3 years ago
Read 2 more answers
What's 258/42?
Sedbober [7]
6
84
91
395
All these are rounded to the nearest whole number
6 0
3 years ago
What is the cosine of 122.2
Juli2301 [7.4K]

cosine 122.2 = <em>-</em><em>0</em><em>.</em><em>5</em><em>3</em><em>2</em><em>8</em><em>7</em><em>6</em><em>2</em><em>7</em><em>6</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

6 0
3 years ago
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