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3 years ago

9

Which expression is equivalent to 3/5 (5n-12) -1/4 (3n +16)

1 answer:

natita [175]3 years ago

4 0

Hopefully you will be enlighted more than confused

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The mass of a cylinder made of barium with a height of 2 inches depends on the radius of the cylinder as defined by the function

svp [43]

Answer:

$r=22.07\ in$

Step-by-step explanation:

<em><u>The correct function is</u></em>

$m(r)=7.188\pi r^{2}$

we have

System of equations

$m=7.188\pi r^{2}$ -----> equation A

$m=11,000$ -----> equation B

Solve by substitution method

substitute equation B in equation A

$11,000=7.188\pi r^{2}$

Solve for r

Divide by 7.188π both sides

$r^{2}=\frac{11,000}{7.188\pi}$

square root both sides

$r=22.07\ in$

5 0

3 years ago

Read 2 more answers

Jack is packing snacks for him and his three brothers. He bought 10 1/2 ounces of pretzels. He wants to put the pretzels into ba

Llana [10]

Answer:

3.5

Step-by-step explanation:

total pretzel=10 1/2 or10.5

no. of brother = 3

now,

10.5 pretzel for each borther= 10.5/3

=3.5 <u>ans</u>

3 0

3 years ago

In right triangle ABC, A=28º, b= 7, and ZC is the right angle. Solve the triangle.

sweet-ann [11.9K]

Answer:

B=62, a=3.7, C=7.9

Step-by-step explanation:

5 0

3 years ago

Shawna makes crafts using glass vases and colored sand she can buy a package of 10 vases for 8.00$ shawarma has $40.00 to spend

myrzilka [38]

Answer:

5 packs of vases.

Step-by-step explanation:

8 divided by 40 = 5. therefore, 5 packs of vases can be bought.

3 0

3 years ago

Pls help me on this math watch!!! this is non calculator

Andru [333]

The height of the cone is 4 cm (approx).

Step-by-step explanation:

Given,

The radius (r) of the cone = 4.96 cm

Volume (V) = 102 cm³

To find the height (h) of the cone.

Formula

The volume of a cone V = $\frac{1}{3}$ πr²h

Now,

According to the problem,

$\frac{1}{3}$ πr²h = 102

or, $\frac{1}{3}$ × $\frac{22}{7}$ ×(4.96)²h= 102

or, h = $\frac{102X7X3}{4.96^{2}X22 }$

or, h = 3.95 = 4 (approx)

so,

Height = 4 cm (approx)

8 0

3 years ago