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Inessa05 [86]
2 years ago
12

The sum of three numbers is 79. The sum of five times the first number and two times the

Mathematics
1 answer:
stepan [7]2 years ago
3 0

Answer:

(x+y+z)=79

5x+2y+z=859

2x+3y+9z=498

Step-by-step explanation:

Its writing 3 different equations that have the same value for the same variable.

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Can somebody help me please?
madreJ [45]
Factor
(x+7)(x-2)

Proof
7-2=5
7*-2=-14

Zeros
x+7=0
x=-7

x-2=0
x=2

Final answer: C

3 0
3 years ago
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Determine the simple interest when: principal: $205,435 interest rate: 2.8%, time: 15 year
Vesna [10]
<h2>$86282.7</h2>

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

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<h2>MARK ME AS BRAINLIST</h2><h2>PLZ FOLLOW ME</h2>
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A checking account is overdrawn by $13 on both Friday and Saturday. what is the balance of the bank account?
sergiy2304 [10]
Need more info! Sorry bub we can’t help answer
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2 years ago
Help help help help help math math please please pelsss
Komok [63]

Answer:

Both of the angles will add up to 180 degrees so let’s make an equation.

5x-5+2x+10=180

First we collect like terms

5x+2x-5+10=180

Add them up

7x+5=180

Move the constant to the right

7x=180-5

7x=175

7x/7=175/7

x=25

So yes it’s true x=25.

Now we find the respective angles,

5x-5

5(25)-5

125-5

120

So angle one is 120 degrees.

2x+10

2(25)+10

50+10

60

So angle two is 60 degrees.

Now to check,

120+60=180

Step-by-step explanation:

4 0
2 years ago
Pls help!! person with correct answer will be marked brainliest
satela [25.4K]

Answer:

X= 14  

The acute angle measures 34 degrees.

The obtuse angle measures 146 degrees.

Step-by-step explanation:

To solve this question, start by solving for x. In order to solve for x, know that angle (10x+6) degrees and angle (3x-8) degrees is a supplementary angle. A supplementary angle is an angle in which the sum of two angles equal 180 degrees.

Since angle (10x+6) degrees and angle (3x-8) degrees is a supplementary angle, we know that the sum of the two angles equal 180 degrees. To find x, write an equation that sets angle (10x+6) degrees and angle (3x-8) degrees equal to 180 degrees. The equation will look like (10x+6) + (3x-8) =180. To start solving the equation, combine like terms, which will look like 13x-2=180. Next, add 2 to both sides, and the equation will look like 13x = 182. Then, divide both sides by 13, and x will equal 14.  

Since the x is now known, the actual degrees of the angles can be found. To find the actual degrees of both angles, start by plugging 14 into each angle equation.

For 10x+6, plug 14 into x, and the equation will look like 10(14)+6. Next, simplify the equation, and the answer will be 146 degrees. The 146 degrees is the obtuse angle because an obtuse angle has a measurement greater than 90 degrees but less than 180 degrees.  

For 3x-8, plug 14 into x, and the equation will look like 3(14)-8. Next, simplify the equation, and the answer will be 34 degrees.The 34 degrees is the acute angle because acute angles measure less than 90 degrees.

To check if the angles are correct, add both angles, and the answer will equal 180 degrees, which then makes them supplementary angles.

4 0
2 years ago
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