All categories

2 years ago

Hey guys this is my last one please help me!!!!

Mathematics

1 answer:

Soloha48 [4]2 years ago

5 0

Answer:

6 cm

Step-by-step explanation:

Assuming that pi is 3.14...

Radius = 8 cm (Diameter/2)

Volume=3.14*r²*h

Volume=3.14*8²*h

1206.37=3.14*64*h

1206.37=200.96*h

h=6 cm

You might be interested in

38. Emily is buying some graduation pictures. She pays $25 for the sitting and $15 for each

goldfiish [28.3K]

a. She pays $100 for 5 sheets

b. 25+15x dollars for x sheets

c. 8 sheets

Step-by-step explanation:

Given

Sitting cost = $25

Per sheet picture cost = $15

Let p be the number of sheets of pictures

Then the cost can be written as a function of p

$c(p) = 25+15p$

Now,

a. How much does she pay for 5 sheets of pictures?!

Putting p = 5 in the function

$c(5) = 25 + 15(5)\\= 25+75\\=100$

She will pay $100 for 5 sheets of pictures

b. How much does she pay for "x" sheets?

Putting x in place of p

$c(x) = 25+15x$

c. How many sheets can she buy for $145?

We know the cost now, we have to find p so,

$145 = 25+15p\\145-25 = 25+15p-25\\120 = 15p$

Dividing both sides by 15

$\frac{15p}{15} = \frac{120}{15}\\p = 8$

Hence,

She can buy 8 sheets for $145

Keywords: Linear equation, Algebraic functions

Learn more about functions at:

#LearnwithBrainly

5 0

3 years ago

What is the solution of the equation? Square root 2x+13-5=x

borishaifa [10]

Add
5
5
to both sides of the equation.
√
2
x
+
13
=
x
+
5
2
x
+
13
=
x
+
5
To remove the radical on the left side of the equation, square both sides of the equation.
(
√
2
x
+
13
)
2
=
(
x
+
5
)
2
(
2
x
+
13
)
2
=
(
x
+
5
)
2
Simplify each side of the equation.

2
x
+
13
=
x
2
+
10
x
+
25
2
x
+
13
=
x
2
+
10
x
+
25
Solve for
x
x
.

x
=
−
2
,
−
6
x
=
-
2
,
-
6
Exclude the solutions that do not make
√
2
x
+
13
−
5
=
x
2
x
+
13
-
5
=
x
true.
x
=
−
2

8 0

3 years ago

Read 2 more answers

Write a short paragraph composes at least 10 sentences discussing factors affecting solubility

kumpel [21]

Answer:

Step-by-step explanation:

Solubility can be defined as the ability of a solute (could be solid, liquid or gas) to dissolve in a solvent in order to produce a solution. There are several factors affecting solubility which includes (basically four) temperature, polarity, surface area of solute particles and pressure of gases. Generally, an increase in temperature leads to an increase in the solubility of a solute in a solvent. This is because an increase in temperature will increase the average kinetic energy of molecules in the solution which leads to increase interaction between the solute and solvent particles. There is a general saying of "like dissolve like" when discussing polarity. For example, organic solvents are used to dissolve organic solutes (just as petrol is used to wash grease off hands and surfaces). Hence, when the solute and solvent have the same polarity, solubility occurs easily, otherwise solubility may be difficult or may not even occur. A reduced/smaller surface area of the solute leads to an increase in solubility as this makes it easy for the solute particles to interact easily with the solvent. In gases, an increase in pressure increases the interaction between the gaseous molecules of the solute and the solvent, thus leading to an increased solubility. Pressure does not affect solubility in solids and rarely in liquids.

3 0

3 years ago

How do you know the correct order in which to evaluate algebraic expressions?

GenaCL600 [577]

You should use PEMDAS. I

6 0

2 years ago

Lines m and n are parallel lines cut by a transversal l.

lord [1]

The second option. Angles 2 and 6 are corresponding angles, and 6 and 7 make a linear pair, so 2 and 7 are supplementary.

The first option doesn’t even mention angle 7, the third option doesn’t mention angle 2, and the last option doesn’t mention 7 either.

4 0

3 years ago