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3 years ago

Please HELP me: 4x-3.75x=1.5x-1

2 answers:

8 0

$4x-3,75x=1,5x-1\\\\
0,25x=1,5x-1\ \ \ |Subtract\ 1,5x\\\\
-1,25x=-1\ \ \ |Divide\ by\ -1,25\\\\x=0,8\\\\Solution\ is\ x=0,8.
$

cupoosta [38]3 years ago

7 0

Let's solve your equation step-by-step.4x−3.75x=1.5x−1

Step 1: Simplify both sides of the equation.0.25x=1.5x−1

Step 2: Subtract 1.5x from both sides.0.25x−1.5x=1.5x−1−1.5x−1.25x=−1

Step 3: Divide both sides by -1.25.‌−1.25x−1.25‌=‌−1−1.25‌

x=0.8

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£3.65 equals to what

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In ΔVWX, \text{m}\angle V = (4x+3)^{\circ}m∠V=(4x+3) ∘ , \text{m}\angle W = (x+7)^{\circ}m∠W=(x+7) ∘ , and \text{m}\angle X = (5

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Answer:

The value of x is 17

Step-by-step explanation:

The sum of the angles in a triangles is 180°

From the question:

In ΔVWX,

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Collect like terms

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3 years ago

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Answer:

1) The system of equations is $5x+4y=75$ and $x+y=18$

2) The first number is $3$ and the second number is $15$

Step-by-step explanation:

1) Let be "x" the first number and "y" the second number.

Remember that:

a- The word "times" indicates multiplication.

b- A sum is the result of an addition.

c- "Is" indicates this sign: $=$

Then, the sum of 5 times "x" and 4 times "y" is 75, can written as:

$5x+4y=75$

And "The sum of the two numbers is 18" can written as:

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Therefore, the System of equations is:

$\left \{ {{5x+4y=75} \atop {x+y=18}} \right.$

2) You can use the Elimination Method to solve it:

- Multiply the second equation by -5, add the equations and then solve for "y":

$\left \{ {{5x+4y=75} \atop {-5x-5y=-90}} \right.\\......................\\-y=-15\\\\y=15$

- Substitute the value of "y" into any original equation and solve for "x":

$x+15=18\\\\x=18-15\\\\x=3$

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