I need help I do not understand this at all

Find a counterexample to show that the following statement is false. The sum of two five-digit numbers is a six-digit number + i

Andrej [43]

Answer:

It not necessary that every time the sum of two five digit number is a six digit number.

Step-by-step explanation:

We are given the statement that sum of two five digit numbers is always a six digit number.

We have to give a counter example to show that the given statement is false.

It not necessary that every time the sum of two five digit number is a six digit number.

Example:

10,000 + 30,000 = 40,000

13,245 + 74,632 = 87,877

56463 + 26230 = 82693

50,000 + 50,000 = 1,00,000

7 0

4 years ago

Sand is being dumped from a conveyor belt and forms a conical pile. Assuming that the height of this cone is always exactly 3 ti

viva [34]

Answer:

dh/dt = 0.4 m/min

Step-by-step explanation:

The volume of the cone is:

V(c) = (1/3)*r² *h if always h = 3r then r = h/3

The volume of the cone as a function of h will be:

V(h) = (1/3)* (h/3)²*h

V(h) = (1/27)*h³

The increasing rate of the volume is equal to the rate of sand added the:

D(V)/dt = (1/27)*3*h²*dh/dt

D(v) / dt = 10 m³/min

h = 15 m and dh/dt is the rate of increasing of the height

By substitution

10 m³/min = ( 1/9)* 225 * dh/dt (m²)

dh/dt = 90 / 225 m/min

dh/dt = 0.4 m/min

3 0

3 years ago

The density of a certain type of paint is 1.2 grams per cubic centimeter. A garage Door that is 3 meterá tal and 7 meters wide i

Yakvenalex [24]

Since the density is given in grams per cubic centimeter, we are going to convert the dimensions of the door to centimeters to calculate its volume in cubic centimeters.
We know that 1 meter = 100 centimeters and 1 centimeter = 10 millimeter, so we can use those conversion factors to convert from millimeters to centimeters and from meters to centimeters:
$3m( \frac{100cm}{1m} )=300cm$
$7m( \frac{100cm}{1m} )=700cm$
$1mm( \frac{1cm}{10mm} )=0.1cm$
The volume of the layer of the paint will be height times wide time thickness, so:
$V=(300cm)(700cm)(0.1cm)$
$V=21000cm^3$

Now, to find the mass needed to paint the door, we are going to use the formula: $M=DV$
where
$M$ is mass
$D$ is density
$V$ is volume
We know from our problem that $D= \frac{1.2g}{cm^3}$ , and we know form our previous calculation that $V=21000cm^3$ , so lets replace those values in our formula to find $M$ :
$M=DV$
$M=(\frac{1.2g}{cm^3} )(21000cm^3)$
$M=25200g$

We can conclude that we will need 25200 grams of paint to paint the door.

5 0

4 years ago

i will give brainliest to whoever answers correctly. this is due in 10 minutes so i would appreciate if you could do it

alexandr402 [8]

Answer:

choice 1) 7

Step-by-step explanation:

6 + (9-1)^2 / 4 x (1/2)^4

6 + 64/4(1/16)

6+16/16

6+1 = 7

3 0

3 years ago

Ann wants to set up chairs in rows of 8. If she sets 14 rows, how many seats will she have?

frozen [14]

Answer:

112

Step-by-step explanation:

8×14 if each row has 8 chairs, and there's 14 rows that means 8×14 which equals 112 :)

3 0

3 years ago

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