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4 years ago

X(5x2 - x) Maaad confused

1 answer:

5 0

Move all terms to the left side and set equal to zero. Then set each factor equal to zero. Exact form:
X=0,1/5
Decimal form:
X=0,0.2

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Solve the system of equations below using a matrix equation.

andreev551 [17]

Answer is b. ( -1, -5)

Answer is b. (-1, -5)

Step by step

Substitute the x and y values into both equations to find equality

Answer b. Makes both equations equal

2x + y = -7

2(-1) + (-5) = -7

-2 -5 = -7

-7 = -7
it equals now let’s do the 2nd one

x - y = 4

-1 -(-5) = 4

4 = 4

This one equals too. I did the math on the other three answers and they did not equal.

5 0

1 year ago

Combine like terms<br> 1.5x + 3y + 5 + 4x + 3y + y + 8

Komok [63]

Answer:

9x+7y+13

Step-by-step explanation:

add all the x's, y's, and no exponents together

5 0

3 years ago

Stan's bank account balance is less than -$20.00 but greater than -$21.00. What could Stan's account balance be?

Rama09 [41]

-20.01
-20.02
-20.03
and so on

all the way to 20.99

4 0

3 years ago

Same value as 20% of 45

Tems11 [23]

Simplify the expression
The answer is 9

6 0

3 years ago

Read 2 more answers

When the reciprocal of the larger of two consecutive even integers is subtracted from 4 times the reciprocal of the smaller, the

yawa3891 [41]

Answer: No solution

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

1st number: x

2nd number: x + 2

reciprocal of the larger is $\frac{1}{x+2}$

4 times the reciprocal of the smaller is 4 $(\frac{1}{x})$

reciprocal of the larger of two consecutive even integers is subtracted from 4 times the reciprocal of the smaller is 4 $(\frac{1}{x})$ - $\frac{1}{x+2}$

the result is 56: 4 $(\frac{1}{x})$ - $\frac{1}{x+2}$ = 56

Solve the equation:

4 $(\frac{1}{x})$ - $\frac{1}{x+2}$ = 56

$\frac{4(x(x + 2))}{x}$ - $\frac{1(x(x + 2))}{x+2}$ = 56(x(x + 2))

4x + 8 - x = 56x² + 112x

3x + 8 = 56x² + 112x

0 = 56x² + 109x - 8

Use the quadratic formula to solve:

x = $\frac{-109+/-11\sqrt{113}}{112}$

The result is NOT AN INTEGER so there is NO SOLUTION

8 0

3 years ago