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klio [65]
2 years ago
9

Which operation would you do third in the following problem?

Mathematics
1 answer:
Anastasy [175]2 years ago
6 0

Answer:

multiplication

Step-by-step explanation:

it seems the best

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Find the value of x and y that satisfy both equalities x/5=y/3 and 12/y=4/5 HURRY!!!!
Vika [28.1K]

x=25,y=15 Not to sure abt this answer but I think I got it

7 0
3 years ago
15
Evgesh-ka [11]

Answer:

Height = 14.4

Step-by-step explanation:

The diagonals meet at right angles. Interesting property.

The hypotenuse is the side of the rhombus = 15 cm

One of the sides of the small triangles created by the intersection of the diagonals = 24/2 = 12

You can find the other side of the the triangle by using the Pythagorean Theorem

a^2 + b^2 = c^2

c = 15

a = 12

b = ?

12^2 + b^2 = 15^2

144 + b^2 = 225

b^2 = 225 - 144

b^2 = 81

b = 9

The area of this right angle = 9 * 12/2 = 54

There are 4 of them so 4 * 54 = 216

That's the area of the rhombus.

The h= Area / b

b = 15

h = 216/15

h = 14.4

8 0
2 years ago
Is the triangle with side lengths of 10 in., 24 in., and 26 in. a right triangle? 85 POINTS
monitta
The answer to, Is the Triangle with side lengths of 10 in., 24 in., and 26 in, a right triangle is: Yes.  For right triangles, the sum of the squares of the shorter sides is equal to the square of the longer side.  Thus, this is a right triangle if 10^2+24^2=26^2.  Expanding these squares, we have 100+576=676, which is true.  Thus, the triangle is right.
5 0
3 years ago
Read 2 more answers
4x - 2y = -20<br> 7x + 2y = -2
Brut [27]

Answer:

(-2, 6)

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination
  • Solving systems of equations by graphing

Step-by-step explanation:

<u>Step 1: Define systems</u>

4x - 2y = -20

7x + 2y = -2

<u>Step 2: Rewrite systems</u>

4x - 2y = -20

  1. Add 2y to both sides:                    4x = 2y - 20
  2. Divide 4 on both sides:                 x = 1/2y - 5

<u>Step 3: Redefine systems</u>

x = 1/2y - 5

7x + 2y = -2

<u>Step 4: Solve for </u><em><u>y</u></em>

<em>Substitution</em>

  1. Substitute in <em>x</em>:                         7(1/2y - 5) + 2y = =-2
  2. Distribute 7:                              7/2y - 35 + 2y = -2
  3. Combine like terms:                11/2y - 35 = -2
  4. Add 35 to both sides:              11/2y = 33
  5. Isolate <em>y</em>:                                   y = 6

<u>Step 5: Solve for </u><em><u>x</u></em>

  1. Define original equation:                    7x + 2y = -2
  2. Substitute in <em>y</em>:                                     7x + 2(6) = -2
  3. Multiply:                                                7x + 12 = -2
  4. Subtract 12 on both sides:                   7x = -14
  5. Divide 7 on both sides:                        x = -2

<u>Step 6: Graph systems</u>

<em>Check the system.</em>

8 0
3 years ago
A coin is tossed and a number cube is rolled. What is the probability that the coin shows heads and the number cube shows 5? A.
Grace [21]
A is the answer i think
8 0
3 years ago
Read 2 more answers
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