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Stolb23 [73]
3 years ago
6

What is the value of the expression below when w =7 and x = 2? 3w – 4x

Mathematics
2 answers:
guapka [62]3 years ago
8 0

Answer:

13

Step-by-step explanation:

w = 7 \:  \:  \:  \:  \:  \: x = 2 \\ 3w - 4x \\ 3 \times 7 - 4 \times2 \\ 21 - 8 \\  =1 3

Dimas [21]3 years ago
6 0

Answer:

13

Step-by-step explanation:

Substitute the variables given

w=7 &x=2

3(7)-4(2)

21-8

=13

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A metal conduit will be used as a pathway for wiring through a concrete block. The conduit is a 5 foot long rod with an outer di
kolbaska11 [484]

Answer:  586.59 cubic centimeters .

Step-by-step explanation:

As per given . we have

Inner diameter =  1.8 inches

⇒Inner radius :r = 0.9 in.  (radius is half of diameter)

= 0.9 x (2.54) = 2.286 cm  [∵ 1 in . = 2.54 cm]

Outer diameter = 2 inches

⇒Outer radius : R = 1 inch  = 2.54 cm

Height : h = 5 feet = 5 x(30.48) = 152.4 cm   [∵  1 foot = 30.48 cm]

The formula to find the volume of a hollow cylinder :

V=\pi(R^2-r^2)h , where R= outer radius , r= inner radius and h= height.

Now , the volume of metal in the conduit :

V=(3.14)(( 2.54)^2-(2.286)^2)(152.4)

V=(3.14)(6.4516-5.225796)(152.4)

V=(3.14)(1.225804)(152.4)

V=586.591342944\approx586.59\ cm^3

Hence, the volume of metal in the conduit is 586.59 cubic centimeters .

5 0
3 years ago
2 3/5 ×5/6 = what does it equel
wolverine [178]
Your answer is 2 and 1/6

6 0
3 years ago
What is true about the function graphed below?
Dafna1 [17]

Answer:

  D. The axis of symmetry is the y-axis.

Step-by-step explanation:

The vertex is at coordinates (0, 3). Since this parabola opens vertically, its axis of symmetry is the x=coordinate of the vertex: x = 0. That is the equation of the y-axis.

The axis of symmetry is the y-axis.

8 0
3 years ago
I need help ASAP anyone
Lilit [14]

Answer:

12%

Step-by-step explanation:

I = Prt

r = I/Pt

r = 792 / 2200(3)

r = 0.12

3 0
3 years ago
Who can solve this <br>2xy if x=5 and y=-3​
Softa [21]

Answer:

-30

Step-by-step explanation:

2*5 is 10

10*-3 is -30

8 0
3 years ago
Read 2 more answers
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