All categories

3 years ago

Answer question 4. Please show work.

Mathematics

1 answer:

Finger [1]3 years ago

6 0

X+12 +5x =6x+12 =90
-12 from 90
=78
/6
X=13

You might be interested in

9. Which of these was an example of US industrial mobilization for war? (5.1.B) A. Increased factory production of tanks and pla

blagie [28]

Answer:

Step-by-step explanation:

Tanks are the Backbone of the Military, they are needed to destroy the Axis Powers during WW2, they also used Captured Enemy Tanks for studying and Produce New Tanks to Counter them.

5 0

2 years ago

1. Ima Thief robs a bank and takes off in a getaway car. Five minutes Polly Srule takes off after Ima.

chubhunter [2.5K]

Answer:

a. 12 minutes

b. 34 minutes

Step-by-step explanation:

Here, we are told that Ima has driven 5 minutes before Polly started driving

So if Ima has driven for x minutes , polly would have driven for y minutes but the difference between x and y is 5

So mathematically;

x = y + 5

a. 17 = y + 5

y = 17-5 = 12 minutes

b. x = 29 + 5

x = 34 minutes

8 0

3 years ago

A right circular cylinder has a height of 22 1/4 ft and a diameter 2 2/5 times its height. What is the volume of the cylinder? E

Triss [41]

Answer:

The volume of cylinder is:

49806.06 ft^3

Step-by-step explanation:

We are given a right circular cylinder with:

Height(h)= $22\frac{1}{4}ft=\dfrac{89}{4}ft$

and a diameter is $2\frac{2}{5}$ times it's height.

i.e. $\dfrac{12}{5}$ times it height.

i.e. the diameter is given as:

$\dfrac{12}{5}\times \dfrac{89}{4}=\dfrac{267}{5}ft.$

We know that the radius of cylinder is half the diameter.

Hence, radius(r) of cylinder is:

$\dfrac{1}{2}\times \dfrac{267}{5}\\\\=\dfrac{267}{10}$

The volume(V) of cylinder is given by:

$V=\pi r^2h$

$V=3.14\times (\dfrac{267}{10})^2\times \dfrac{89}{4}\\\\V=\dfrac{19922423.94}{400}\\\\V=49806.06ft^3$

Hence, the volume of cylinder is:

49806.06 ft^3

7 0

3 years ago

Three students are arguing over who can run the fastest.

ValentinkaMS [17]

Answer:

1/8

Step-by-step explanation

8 min-->1 mile

1 min --> 1/8 mile

8 0

3 years ago

Each day, the human heart pumps about 7500 liters of blood. As a simple approximation, assume that the work done by the heart is

erik [133]

Answer with Step-by-step explanation:

We are given

Volume of blood=V=7500 L= $7500\times 0.001=7.5 m^3$

1 liter= $0.001 m^3$

Height of person=h=1.5 m

Density of blood, $\rho=1050 kg/m^3$

We have to find the work done and power of person's heart.

We know that

Work done, $W=mgh=\rho Vgh$

Where $g=9.8 m/s^2$

Using the formula

$W=1050\times 7.5\times 9.8\times 1.5=1.16\times 10^5 J$

Time,t=1 day= $24\times 60\times 60=86400 s$

Power, P= $\frac{W}{t}$

Using the formula

$P=\frac{1.16\times 10^5}{86400}=1.34 Watt$

7 0

3 years ago