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PolarNik [594]
3 years ago
8

-4x-10y=-2 4x+ 3y=-5

Mathematics
2 answers:
Softa [21]3 years ago
5 0

My work is shown up above in the picture.

Answer : (-2,1)

My answer is definitely right. I checked my answers by using x and y into the two equations. In other words using the substitution method.

nasty-shy [4]3 years ago
3 0

Answer:

(3, 1)

Step-by-step explanation:

Next time, please include the directions:  "Find the solution of the system of linear equations using linear combinations:

-4x-10y=-2

4x+ 3y= -5

----------------

      -7y = -7, so y = 1.  If y = 1, then -4x - 10y = -2 becomes

-4x - 10(1) = -2, or

-4x + 10 = -2, or

-4x = -12.  Then x must be +3.

The solution to this system of linear equations is (3, 1).

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What is the length of b
oksian1 [2.3K]

Answer:

b = 24

Step-by-step explanation:

<u>Concepts</u>

The Pythagorean Theorem states that the sum of the squares of the two other sides on a right triangle is equal to hypotenuse (longest side) squared. It can be represented by the equation a^2+b^2=c^2. We can also use this formula to solve for the other two legs in the right triangle.

<u>Application</u>

In this case, we're asked to find the length of b in the right triangle, given c as 26 and a as 10. Now, we just apply the formula and solve for b.

<u>Solution</u>

Step 1: Set up equation and simplify.

  • 10^2+b^2=26^2
  • 100+b^2=676

Step 2: Subtract 100 from both sides.

  • 100+b^2-100=676-100
  • b^2=576

Step 3: Take square root of both sides.

  • \sqrt{b^2} =\sqrt{576}
  • b=24

Therefore, b = 24.

4 0
2 years ago
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Step-by-step explanation:

here,

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15°+41°=5x°-x°

56°=4x°

\frac{56 }{4x}

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3 years ago
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A production process produces an item. On average, 16% of all items produced are defective. Each item is inspected before being
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Answer:

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Step-by-step explanation:

3 0
3 years ago
What is the radius of a circle with an area of 50.24 cubic inches? Use 3.14 for pi. Enter your answer in the box.
miss Akunina [59]

Answer:

r=4

Step-by-step explanation:

Area of a circle is

A = pi* r^2

We know the area and 3.14 = pi

50.24 = 3.14 * r^2

Divide each side by 3.14

50.24/3.14 =3.14 /3.14 *r^2

16 = r^2

Take the square root of each side

sqrt(16) = sqrt(r^2)

4 =r

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3 years ago
You and a friend play a game where you each toss a balanced coin. If the upper faces on the coins are both tails, you win $1; if
dsp73

Answer:

Step-by-step explanation:

Given that you and a friend play a game where you each toss a balanced coin.

If the upper faces on the coins are both tails, you win $1;

if the faces are both heads, you win $2;

if the coins do not match (one shows a head, the other a tail), you lose $1 (win (−$1)).

Let Y be the amount won

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The above is the probability distribution for Y.

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