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3 years ago

.Solve the system of equations. Use elimination

Mathematics

1 answer:

Elina [12.6K]3 years ago

6 0

Answer:

a) (-9,3)

Step-by-step explanation:

x + 2y = -3

- (x - y = -12)

x + 2y = -3

- x + y = 12

3y = 9

y = 3

x - y = -12

x- 3 = -12

x= - 9

(-9, 3)

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(01.01 LC)

maw [93]

Answer:

Square root of 36.

Step-by-step explanation:

The square root of 36 = 6 so this is rational.

Recall that a rational number is one that can be written as a/b where a and b are not 0. 6 can be written as 6/1.

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3 years ago

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nlexa [21]

Answer:

a. -1.7

b. -1.2

c. -0.5

d. 0.6

e. 1.1

Step-by-step explanation:

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3 years ago

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Can someone please help me? :(

Anit [1.1K]

Answer:

____________________________________

$\large{ \tt{ \star \: S \: O \: L \: U \: T \: I \: O \: N : }}$

$\large{ \boxed{ \tt{♡ \: VOLUME \: = l \: \times b \: \times h}}}$

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Our final answer is 57 7 / 9 ft^3 .

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2 years ago

Layla used 0.482 gram of salt in her experiment. Maurice used 0.51 gram of salt in his experiment. Which pf the following amount

Sedaia [141]

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4 years ago

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Nina purchased apples and strawberries. She purchased a total of 9 pounds of fruit and spent a total of $16.35. Strawberries cos

irina [24]

Answer:

4 pounds of strawberries and 5 pounds of apples are bought.

Step-by-step explanation:

Given:

Total number of pounds of fruit = 9 pounds

Total money spent = $16.35

Cost of 1 pound of strawberry = $1.60

Cost of 1 pound of apple = $1.99

Let 'x' pounds of strawberries and 'y' pounds of apples are bought.

So, as per question:

The sum of the pounds is 9. So,

$x+y=9\\\\y=9-x----1$

Now, total sum of the fruits is equal to the sum of 'x' pounds of strawberries and 'y' pounds of apples. So,

$1.60x+1.99y=16.35----2$

Now, plug in the 'y' value from equation (1) in to equation (2). This gives,

$1.60x+1.99(9-x)=16.35\\\\1.60x+17.91-1.99x=16.35\\\\Combining\ like\ terms, we get:\\\\1.60x-1.99x=16.35-17.91\\\\-0.39x=-1.56\\\\x=\frac{-1.56}{-0.39}=4\ pounds$

Now, from equation 1, we have:

$y=9-4=5\ pounds$

Therefore, 4 pounds of strawberries and 5 pounds of apples are bought.

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3 years ago