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BabaBlast [244]
3 years ago
8

Which of the interpretation for given expression is correct? 5(3x - 4)2

Mathematics
2 answers:
ch4aika [34]3 years ago
3 0

The answer is x=0. Because 5+4=9 and 3^2 =9. So x just needs to be zero.

dimaraw [331]3 years ago
3 0

Answer:

B. The product of 5 and the difference of 3x and 4 squared

Step-by-step explanation:

5(3x-4)^{2}

first the difference 3x-4

second the square of the difference

third the product

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2. A chemist has a 25% and a 50% acid solution. How
AnnZ [28]

Answer:

x is mL of 25% acid and y is mL of 50% acid

We set up 2 equations:

A) x + y = 250

B) .25 x + .50y = .35 * 250 which equals

B) .25x + .50y = 87.50  Multiplying A) by -.5

A) -.5x -.5y = -125  adding the equations we get

-.25x = -37.50

x = 150 mL

y = 100 mL

Source:  http://www.1728.org/mixture.htm

Step-by-step explanation:

7 0
3 years ago
sophia borrowed $12,109 at 4.5% simple interest for 6 months. How much will the interest amount to? What is the total amount tha
Yuri [45]
The applicable formula is
  I = Prt
where P = the principal value (12109), r is the interest rate (0.045), and t is the time period in years (1/2)

a) Substituting the given values, the interest amount is computed as
  I = ($12,109)(.0.45)(1/2)
  I = $272.45

b)
The amount Sophia will have to pay back is the sum of the principal amount and the interest owed.
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3 years ago
PLEASE HELP GIVING BRAINLIEST ANSWER 88 POINTS
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Step-by-step explanation:

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agasfer [191]

Question 5, x could be either 6 or -1.

3 0
3 years ago
Read 2 more answers
Please help with these math questions part 2
NikAS [45]
5).
and
6).
The volume of a sphere is

               (4/3) (pi) (radius)³ .

In #5, the 'pi' is already there next to the answer window.
You just have to come up with the (4/3)(radius³).

Remember that the radius = 1/2 of the diameter.

7).  The volume of a cylinder is

                         (pi) (radius²) (height) .

Divide the juice in the container by the volume of one can,
to get the number of cans he can fill.

8).  The volume of a cone is

                     (1/3) (pi) (radius of the round bottom)² (height) .

He starts with a small cone, he then adds clay to it to make it higher.
The question is:  How much clay does he ADD to the short one,
to make the bigger one ?

Use the formula to find the volume of the short one.
Use the formula again to find the volume of the bigger one.
Then SUBTRACT the smaller volume from the bigger volume.
THAT's how much clay he has to ADD.

Notice that the new built-up cone has the same radius
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_______________________________________

Don't worry if you don't understand this.

The answer will be this number:

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6 0
3 years ago
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