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3 years ago

What does this mean?

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

6 0

Answer:

That means you finished.

Step-by-step explanation:

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Elimination_4x_2y=14 _10x+7y=_24

Gnesinka [82]

Answer:

The answer is $x=-\frac{50}{8}$ and $y=\frac{11}{2}.$

Step-by-step explanation:

Given:

-4x-2y=14

-10x+7y=-24

Now, to solve it by elimination:

$-4x-2y=14$ ......(1)

$-10x+7y=-24$ ......(2)

So, we multiply the equation (1) by 7 we get:

$-28x-14y=98$

And, we multiply the equation (2) by 2 we get:

$-20x+14y=-48$

Now, adding both the new equations:

$-28x-14y+(-20x+14y)=98+(-48)$

$-28x-14y-20x+14y=98-48$

$-28x-20x-14y+14y=50$

$-8x=50$

Dividing both the sides by -8 we get:

$x=-\frac{50}{8}$

Now, putting the value of $x$ in equation (1):

$-4x-2y=14$

$-4(-\frac{50}{8})-2y=14$

$\frac{200}{8} -2y=14$

$25-2y=14$

Subtracting both sides by 25 we get:

$-2y=-11$

Dividing both sides by -2 we get:

$y=\frac{11}{2}$

Therefore, the answer is $x=-\frac{50}{8}$ and $y=\frac{11}{2}.$

5 0

3 years ago

Solve for X: 1.) 3x-4=6x+5 2.) 3x-4=6x+5 3.) -2(1+7x) = -100 4.) x - 1 + 3= - 2- x

TiliK225 [7]

Answer:

1) -3

2) -3

3) 7

4) -2

4 0

3 years ago

Read 2 more answers

When a farmer harvests apples he expects 6% of the apples to be rotten how many apples would the farmer expect to be rotting whe

guapka [62]

The question is incomplete had the number of harvested apples isn't given.

Answer:

0.06n

Step-by-step explanation:

When a farmer harvests apples he expects 6% of the apples to be rotten how many apples would the farmer expect to be rotting when harvesting apples

The expected percentage of rotten apples when harvesting = 6%

The expected number of rotten apples can be obtained by taking the product of the expected percentage and the number of apples to be harvested.

Since the number of harvested apples isn't given,

Let the number of harvested apples = n

Therefore, the expected number of rotten apples will be :

6% * n

0.06n

Note : you can easily substitute the actual number of harvested apples for n in the equto get the actual answer

8 0

2 years ago

What should be subtracted from

pychu [463]

-5a²+13ab should be subtracted.

<h3>Step-by-step explanation:-</h3>

Based on the given conditions, formulate,

$→- {a}^{2} - 4 {a}^{2} + 13ab$

$→-({a}^{2} - 4 {a}^{2}) + 13ab$

Taking the coefficients or numbers, we get,

$→(- 1 - 4) {a}^{2} + 13ab$

$→ - 5 {a}^{2} + 13ab$

3 0

2 years ago

Read 2 more answers

C. If a < 0 and f(a) > 0, then the point (a, f(a))

professor190 [17]

The answer is: b - lies in quadrant II when graphed.

Explanation:

Any number less than zero is a negative number.

Example: -1

Any number greater than zero is a positive number.

Example: 1

(a, f(a))

(-1,1)

When these example points are graphed, they are placed in the second quadrant.

3 0

2 years ago