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mr_godi [17]
3 years ago
13

Solve for x. -1/2 (x+5)=2x -3/2

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0

Start from

-\dfrac{1}{2}(x+5)=2x -\dfrac{3}{2}

It may be useful to multiply the whole expression by 2, in order to get rid of denominators:

-(x+5)=4x -3

Distribute the negative sign in the left hand side:

-x-5=4x -3

Move all terms involving x to the left, and all constants to the right:

-x-4x=-3+5

Sum like terms:

-5x=2

DIvide both sides -5:

x = -\dfrac{2}{5}

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12.5 of what number is 150
Y_Kistochka [10]

Answer: 1,200


Step-by-step explanation:

1,200 x .125 = 150


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3 years ago
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jill mowed lawns for 3 hours and earned $7.20 per hour.Then she washed windows for 4 hours and earned $6.75 per hour. what were
Aleksandr-060686 [28]
Actually, she worked for seven hours, so I'll solve for that.

7.20 x 3 = 21.6

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21.6 + 27 = 48.6

48.6 /2 = 24.3

Her average should be $24.3  If she did work six hours, just multiply 6.75 x 3 and do what I did.
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3 years ago
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aivan3 [116]
Again using the Pythagorean Theorem:

h^2=x^2+y^2, where h is the hypotenuse of a right triangle and x and y are the side lengths.  You are given that the hypotenuse is 34 ft and the base side is 16ft. Let h=34, x=16, and y=height, then you have:

34^2=16^2+y^2

y^2=34^2-16^2

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y^2=900

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So the ladder will reach a spot 30 feet high on the building. 
8 0
3 years ago
Use the give points and line. determine the slope of the line.
wariber [46]
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3 years ago
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Solve the system by graphing y=-4x-2 -2x+y=-2 Plot both lines and point of intersection by moving the dots to the correct locati
UkoKoshka [18]

Answer:

The point of intersection is (0,-2).

Step-by-step explanation:

Equation 1: y=-4x-2

Equation 2 : -2x+y=-2

Plot the lines on the graph

Refer the attached figure

Equation 1: y=-4x-2 ---- Red

Equation 2 : -2x+y=-2 ---- Blue

Point of intersection : A point where both the lines intersect is called point of intersection.

So, Both lines intersect at point (0,-2)

So, Point of intersection is (0,-2)

Hence The point of intersection is (0,-2).

7 0
3 years ago
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