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Ghella [55]
3 years ago
10

-21+x=49 what is X HELP PLS

Mathematics
1 answer:
iragen [17]3 years ago
6 0

Answer:

The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol

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Shown below is a prism.
tigry1 [53]

Answer:

Volume = 126 cm^2

Step-by-step explanation:

You don't exactly know what the base looks like, but it doesn't matter. The volume of a Prism is Base * height.

Solution

V = Base (which is the Cross sectional Area) * Length

V = 21 cm^2 * 6 cm

V = 126 cm^2

8 0
3 years ago
To test Upper H 0 : sigma equals 1.6 versus Upper H 1 : sigma less than 1.6​, a random sample of size n equals 21 is obtained fr
kicyunya [14]

Answer:

Answer: is answer hope this helps

Step-by-step explanation:

8 0
3 years ago
What do i do from here on #1??? plz help immediately thank u!!
hammer [34]
Pablo has to paint \frac{1}{3}more murals. 
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Pablo needs 2/5 jars of paint per each 1/3 painted murals
3*\frac{2}{5}
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6 0
3 years ago
1.<br> Which transformation takes shape Sonto shape M?
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3 years ago
Saquina dilates a digital photograph by a factor of 1.75 to create a new digital photograph similar to her original photograph.
KATRIN_1 [288]

Answer

Perimeter = 1.75 times larger

Area = 3.0625 times larger

Step-by-step explanation:

Let the original quadrilateral have sides of a, b, c, d

Perimeter of the New Photograph

  • Then the perimeter of the original is P = (a + b + c + d)
  • Now the perimeter of the new quad is P = 1.75a + 1.75b + 1.75c + 1.75d
  • Using the distributive Property we get P = 1.75(a + b + c + d) So the new perimeter is 1.75*the old perimeter.

Area of the New Photograph

The area is a little harder. Suppose the Old figure had an Area found by the formula of

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  • Area_new = 1.75e * 1.75f
  • Area_new = 3.0625 * e * f
  • Area_new = 3.0625 * old area
6 0
3 years ago
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