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BARSIC [14]
3 years ago
11

#1: Solve the equation below. 5x + 7 = -3x + 31​

Mathematics
2 answers:
svlad2 [7]3 years ago
8 0

Answer:

x=3

Step-by-step explanation:

You can solve by:

5x+7=-3x-31

adding 3x to each side:

8x+7=31

Subtract 7 from each side:

8x=24

Divide each side by 8:

x=3

That is your answer

Hope this helps!

cricket20 [7]3 years ago
4 0

Answer: x=3

Step-by-step explanation:

5x+7=-3x31

5x+7-7=3x+31-7

subtract the numbers

5x=-3x+24

add 3x to both sides

5x=-3x+24

5x+3x=3x+24+3x

combine like terms

8x=24

divide both sides of the equation by the same term 8x=24

8x/8 = 24/8

cancel terms that are in both numerator and denominator

divide the numbers

x=3

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PLEASE HELP ME
shusha [124]

Answer:

she is correct

Step-by-step explanation:

rational numbers are not whole numbers, and -3 is a whole number. For example, -1/3 is a rational number, but -3 is not.

Sorry if im wrong, im bad at math :(

4 0
3 years ago
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What is x? 2x+4x+6x-2(x+3)=34
stellarik [79]

Answer:

x = 4

Step-by-step explanation:

Firstly we have to distribute: 2x + 4x + 6x -2x - 6 = 34

Collect like terms: 10x - 6 = 34

We have to isolate x to get it's value: Add 6 to both sides

10x = 40

Divide both sided by 10: x = 4

7 0
4 years ago
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Kara and Lindsey both hike in separate directions from their campsite, with Kara hiking straight to the east and Lindsey hiking
xz_007 [3.2K]

Answer:

A. f(x)=x^2+x+0.25

Step-by-step explanation:

If x represents Lindsey's distance at 2:00 PM, then 2x represents Kara's distance at 2:00 PM because she walked twice as far as Lindsey. Then adding on the values we got for 2:30 PM, we get that Kara walked a distance of 2x+1 and Lindsey walked a distance of x+0.5 at the time of 2:30 PM. Now, we know that they have formed a right triangle because we are given the directions they walked in; east and north. This allows us to use a formula for the area of a right triangle: 1/2(L x W). Plugging in our values, we get...

1/2(2x+1)(x+0.5)

which simplifies to...

1/2(2x^2+2x+0.5)

which further simplifies to...

x^2+x+0.25

which is our answer.

4 0
3 years ago
How many pennies could you have if:
Gelneren [198K]

Answer:

The number of pennies owned is 7 pennies

Step-by-step explanation:

The given parameters are;

The number of pennies left over when we break the pennies into groups of 2s = 1 penny

The number of pennies left over when we break the pennies into groups of 3s = 1 penny

Let the number of pennies owned = c

What we are given are as follows;

2 × a = c - 1

3 × b = c - 1

2 × a = 3 × b

a/b = 3/2

Therefore, if we multiply 2 by 3, and 3 by 2 we get 6

2 × 3 = 6, similarly 3 × 2 = 6

If we put 6 = c - 1, we get;

c = 6 + 1 = 7

c = 7

The number of pennies owned = 7 pennies.

4 0
3 years ago
if 1/5 and -2 are respectively product and sum of the zeroes of a quadratic polynomial. Find the polynomial.​
Nikitich [7]

Answer:

this might be the equation

Step-by-step explanation:

To find: Quadratic Polynomial.

where , ( α + β ) is sum of zeroes and αβ is product of zeroes.

4 0
3 years ago
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