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KatRina [158]
4 years ago
14

Which expressions, when evaluated with y = –7, are positive in value?

Mathematics
1 answer:
Kruka [31]4 years ago
6 0
A) 18+(2*(-7)) = 4
B) (-3(-7))+(-17) = 4
C) (-2(-7))-23 = -9
D) -30-(4(-7)) = -2
So your answer is A and B
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A box has dimensions of 14 inches long 1.5 feet wide and 7 inches high what is the volume of the box the formula for the volume
kirza4 [7]
1.5ft to inches = 0.125 inches 
14×0.125×7= 12.25 inches cubed 
8 0
3 years ago
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Find the measure of the smaller angle in the figure
Nataliya [291]
You know that the two angles make up a perfectly flat line, which is a 180<span>° angle. So we can create the equation:'

3x + 10 = 12x

Now solve for 'x'. Subtract 3x to both sides:

10 = 9x

Divide 9 to both sides:

x = 10/9

We want to find the smaller angle, so put this value in for 'x' in '3x + 10':

3x + 10

3(10/9) + 10

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13 1/3</span><span>°</span>
6 0
3 years ago
Un ascensor sube desde el primer piso al quinto piso, baja al segundo, sube al octavo. Si cada piso tiene 3 metros de altura, ¿c
german

Answer:

El ascensor recorrió unos 39 metros

Step-by-step explanation:

Segun la pregunta cada cada piso tiene 3 metros de altura, por lo tanto para calcular los metros que recorrió el ascensor tenemos que hacer el siguiente calculo:

metros desde el primer piso al quinto piso=3 metros*4=12 metros

metros desde el quinto piso al segundo piso=3 metros*3=9 metros

metros desde el segundo piso al octavo piso=3 metros*6=18 metros

Por lo tanto los metros que recorrió el ascensor=12 metros+9 metros+18 metros

metros que recorrió el ascensor=39 metros

El ascensor recorrió unos 39 metros

8 0
3 years ago
The length of a rectangle is x times the square root of 100. The width is one-half y more than three-halves x. Given that the ar
dimulka [17.4K]

Answer:

15x^2+5xy-125=0

Step-by-step explanation:

We are give the following in the question:

Dimensions of rectangle:

Length , l =

l = x\sqrt{100} = 10x

Width of rectangle, w =

w = \dfrac{y}{2} +\dfrac{3x}{2}

Area of rectangle = 125 square cm.

Area of rectangle =

A =l\times w

Putting values, we get,

125 = 10x\times (\dfrac{y}{2}+\dfrac{3x}{2})\\\\125 = 5xy+15x^2\\15x^2+5xy-125=0

is the required equation.

7 0
3 years ago
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If you have a bag of 4 red and 6 blue marbles, the probability of picking a red, putting it back,then picking a blue.
Afina-wow [57]

Answer:

well theres a four in ten chance that you'll draw a red one then there's a six in ten chance of drawing a blue

Step-by-step explanation:

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3 years ago
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