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ella [17]
3 years ago
7

Solutions to 2-variable equations

Mathematics
2 answers:
Galina-37 [17]3 years ago
8 0

Answer:

B) only (-3 , 3)

Step-by-step explanation:

y = -3x - 6

(-4,4)    y = -3 x (-4) - 6 = 12 - 6 = 6   .... incorrect

(-3,3)    y = (-3) x (-3) - 6 = 9 - 6 = 3   ..... correct

fredd [130]3 years ago
5 0

Answer:

B

Step-by-step explanation:

To determine which point is a solution, substitute into the left side of the equation and if it is equal to the right side then it is a solution.

(- 4, 4 )

- 3(- 4) - 4 = 12 - 4 = 8 ≠ 6 ← Not a solution

(- 3, 3 )

- 3(- 3) - 3 = 9 - 3 = 6 ← Solution

Thus (- 3, 3 ) is the only solution → B

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Please help asap!!!!!
Andreyy89

Answer:

HL

Step-by-step explanation:

the shared hypotenuse and congruent legs of the triangle means it is congruent by HL

you might think that SSA is also doable because there is a right angle in both triangles but it is not

a way to remember this is that "there are no donkeys in geometry" because SSA backwards is another word for donkey

5 0
3 years ago
Read 2 more answers
the price of the cell phone is expected to increase by 165% in September 2015. The current price of a cell phone is $62.80. What
Sladkaya [172]

Answer:

$166.42.

Step-by-step explanation:

We have been given that the price of the cell phone is expected to increase by 165% in September 2015. The current price of a cell phone is $62.80.

The price of cell phone in September 2015 will be $62.80 plus 165% of $62.80.

\text{The predicted cost of a cell phone in September 2015}=\$62.80+(\frac{165}{100}*\$62.80)

\text{The predicted cost of a cell phone in September 2015}=\$62.80+(1.65*\$62.80)

\text{The predicted cost of a cell phone in September 2015}=\$62.80+\$103.62

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Therefore, the predicted cost of a cell phone in September 2015 will be $166.42.

4 0
3 years ago
the sum of two numbers is 104. the larger is one less than twice the smaller number. find the numbers
exis [7]

Answer:

The larger number is 69 and the smaller number is 35.

Step-by-step explanation:

Find the equations. Here x will be the larger number and y will be the smaller number.

x + y = 104

x = 2y -1

Substitute:

(2y -1) + y = 104

3y = 105

y = 35

x = 2(35) - 1

x = 70 - 1

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The larger number is 69 and the smaller number is 35.

8 0
3 years ago
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never [62]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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zimovet [89]

Answer:

Step-by-step explanation:

z varies inversely

so z=a/x^2

9=a/(2/3)^2

9=a/(4/9)

9=9a/4

a=4

z=4/x^2

z=4/(5/4)^2

z=4/(25/16)

z=64/25

6 0
3 years ago
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