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Gre4nikov [31]
3 years ago
9

Which pair shows equivalent expressions?

Mathematics
1 answer:
maria [59]3 years ago
7 0
The equivalent expression is A
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Amaya used these steps to solve the equation 8x+4=9+4(2x−1). Which choice describes the meaning of her result, 4=5?
timofeeve [1]

Answer:

No value of x makes the equation true.

Step-by-step explanation:

Here are the choices which are missing in the question:

a) Amaya made a mistake because 4 is not equal to 5

b) No value of x make the equation true.

c) All value of x make the equation true.

d) The solution is x= 4 or 5

Given equation is 8x+4=9+4(2x-1)

Now, solving the equation:

8x+4=9+4(2x-1)

distributing 4 with both 2x and -1

⇒8x+4= 9+8x-4

⇒8x+4= 5+8x

Subtracting both side by 8x

∴ 4=5

The result indicate that equation has the same result and x has no value.

4 0
3 years ago
Read 2 more answers
In a long distance race, Adele ran 5 fewer kilometers than twice the number than Bryce ran. Together they ran at least 43 km. Wh
zheka24 [161]

Answer: The least number that Adele ran is 16 km.

Step-by-step explanation:

(2x- 5)+x≥ 43

    + 5   +5

3x ≥ 48

x≥ 16

4 0
3 years ago
A photo studio is going to display a portrait in their lobby. The portrait is being re-produced from a photo with dimensions 6in
Burka [1]

Answer:

the form of it will be the same

Step-by-step explanation:

the form will need to be the same or a part will be cropped so it fits the photo/portrait

6 0
3 years ago
Use differentials to estimate the amount of paint needed (in m3) to apply a coat of paint 0.04 cm thick to a hemispherical dome
pogonyaev

The amount of paint is the volume of paint needed.

The amount of paint needed is 0.065312 cubic meters

<h3>How to determine the amount of paint needed</h3>

The volume of a hemisphere is:

V = \frac 23\pi r^3

Differentiate the above equation

V' = 2\pi r^2 r'

The above equation represents the estimate of the amount of paint needed.

Where:

  • r represents the radius (r = 52/2 m)
  • r' represents the thickness (r' = 0.04 cm)

So, we have:

V' = 2\pi r^2 r'

V' = 2 * 3.14 * (52/2\ m)^2 * (0.04cm)

V' = 2 * 3.14 * (26\ m)^2 * (0.04cm)

Express cm as m

V' = 2 * 3.14 * (26\ m)^2 * (0.0004m)

V' = 0.065312 m^3

Hence, the amount of paint needed is 0.065312 cubic meters

Read more about volumes at:

brainly.com/question/10171109

3 0
2 years ago
Can anyone help me? My teacher just recently taught me this today, be he never explained much. The question is in the photo
IceJOKER [234]

You've got five different problems in this photo ... four on top and the word problem on the bottom ... and they're all exactly the same thing:  Taking two points and finding the slope of the line that goes through them.

In every case, the procedure is the same.
If the two points are  (x₁ , y₁)  and  (x₂ , y₂) , then
the slope of the line that goes through them is

                          Slope  =  (y₂ - y₁) / (x₂ - x₁) .

This is important, and you should memorize it.

#1).  (8, 10)  and  (-7, 14)

         Slope  =  (14 - 10) / (-7 - 8)  =  4 / -15

#2).  (-3, 1)  and  (-17, 2)

         Slope  =  (2 - 1) / (-17 -  -3)  =  (2 - 1) / (-17 + 3)  =  1 / -14

#3).  (-20, -4)  and  (-12, -10)

         Slope  =  [ -10 - (-4) ] / [ -12 - (-20) ]

=========================================

The word problem:

This question only gives you one point on the graph,
and then it wants to know what's the slope ?
What are you going to do for another point ?

A "proportional relationship" always passes through the origin,
so another point on the line is  (0, 0) .

Now you have two points on THAT line too, and you can easily
find its slope.

4 0
3 years ago
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