Why does it take 4 copies of 1 tenth to equal 2 copies of 1 fifth?

Answers

Answer 1

4(1/10) = 2(1/5)

1/10 x 4/1
1 x 4 = 4
10 x 1 = 10
4/10 = 2/5

1/5 x 2/1
1 x 2 = 2
5 x 1 = 5
2/5

2/5 = 2/5

Related Questions

For the following ,ignore leap year and assume that births on the 365 different days are equally likely.what is the probability that two people are born in the same day

Answers

the answer is 1/133225 hope this helps

PLEASE HELP WITH 4,5,6

Answers

4. Yes because while also growing the volume of the can of juice would have to grow too. 5. It would be around 220. If we’re estimating

List all subsets of the following set: {dog, cat, fish}

Answers

There are 8 subsets here. We have the original set {dog, cat, fish} which we can list the items in any order we want.

Then we have the set of items where we only pick two pets
{dog, cat}
{dog, fish}
{cat, fish}
the order for any given set does not matter

Then we have the set of just one pet only
{dog}
{cat}
{fish}

And finally, we have the empty set { } which is just curly braces with nothing inside.

In summary, we have these 8 subsets
{dog, cat, fish}
{dog, cat}, {dog, fish}, {cat, fish}
{dog}, {cat}, {fish}
{ }

Note how this is equal to 2^n = 2^3 = 8. The n = 3 indicates how many items are in the original set. The set of all possible subsets is known as the power set.

Dog , cat
Dog , fish
Cat , fish
Dog, fish , cat
Fish, cat, dog
Cat, dog , fish
Fish , dog , cat

how to graph a function p(t)=t^4+12t^2-9t^2+108t^2

Answers

How do we graph any function? We select different values for y and simplify. We then plot the points on the xy-plane.

Beth created this design to cover a rip in her jacket. It took half an hour toplan the design and two and a quarter hours to cut and sew the frabric to the jacket. How much time did it take Beth to save her favorite jacket?

Answers

2 1/4 + 1/2
first you change 2 1/4 to an improper fraction.
4 x 2=8 +1=9 keep the denominator
9/4
and when adding to fractions you have to multiply.
(9 x 2) + (1 x 4)/4 x 2= 22/8
22 ÷ 2/22 ÷ 8= 11/4
or 2 3/4 hope it helped:D

Estimate the quotient of 239.63 ÷ 7.51

Answers

239.63 ÷ 7.51
estimate
= 240 / 8
= 30

four less than 5 times a number is equal to 6 more than 3 times a number

Answers

You have to formulate an equation for this problem.

Let x = the number asked in the problem

5x – 4 = 3x + 6

Solve the equation.

5x – 3x = 6 + 4

2x = 10

X = 5

Therefore, the number is 5.

[tex]Hey \\ there! [/tex]

[tex]5s - 4 = 3s + 6 \\ 5s - 3s = 4 + 6 \\ 5s - 3s = 2s \\ 4 + 6 = 10 \\ 2s = 10 \\ \frac{2s}{2} = \frac{10}{2} \\ \frac{2s}{2} = 1 (Cancel) \\ \frac{10}{2} = 5 (Keep) \\ Answer: s = 4 [/tex]

[tex]Good \\ luck \\ on \\ your \\ assignment \\ and \\ enjoy \\ day \\ \\ \\ \\ LoveYourselfFirst:) [/tex]

solve for x. 4x+28° x+19° 3x+13°

Answers

Interior angles of triangles always add up to equal 180 degrees, no matter the triangle. So, you can set all these expressions equal to 180 and solve algebraically for x.

180 = (4x + 28) + (x + 19) + (3x + 13)
180 = 4x + 28 + x + 19 + 3x + 13
180 = 8x + 60
120 = 8x
15 = x

Answer:
x = 15

To solve for angle measures, plug 15 for x into each expression.

4x + 28
4(15) + 28
60 + 28
88°

And so on.

an angle whose measure is 50 degrees is in standard position. in which quadrant does the terminal side of the angle fall?

Answers

A standard position angle with a measure of 50 degrees would terminate in quadrant 1.

Please help and for number 2
The answers are
1.362.24mm
2.20.55mm
3.181.12mm
4.41.1mm

Answers

area = 1/2 x B x H
1/2 x 28.3 x 12.8 = 181.12

Answer is #3

find the zeros x^2+5x-24

Answers

x^2 + 5x - 24 = 0

(x + 8)(x - 3) = 0

x + 8 = 0 or x - 3 = 0

x = -8 or x = 3

Maria would like to leave a tip (t) of at least 15% of her dinner bill (b). Which inequality best could be used to find the amount of the tip Maria would like to leave?

Answers

First let's define the variables of the problem:
t: Tip
b: dinner bill.
We write the inequality based on the following proposition:
"Maria would like to leave a tip (t) of at least 15% of her dinner bill (b)"
We have then that the inequation is:
t> = 0.15b
Answer:
An inequality best could be used to find the amount of the tip Maria would like to leave is:
t> = 0.15b

What algebraic expressions are equivalent to “seven subtracted from a number”?

Answers

Answer will helped you!!

x-7

there is no like terms.

x-7 is answer.

Hopes it helped

Nathan has a sculpture in the shape of a pyramid. The height of the sculpture is 3 centimeters less than the side length, x, of its square base. Nathan uses the formula for the volume of a pyramid to determine the dimensions of the sculpture:

Here, a is the side length of the pyramid’s square base and h is its height.

If 162 cubic centimeters of clay were used to make the sculpture, the equation x3 +
x2 +
= 0 can be used to find that the length of the sculpture’s base is
centimeters.

Answers

Final answer:

The student needs to apply the formula for the volume of a pyramid, V = 1/3 * a² * h. Since the height is 3 cm less than the side length, this introduces a variable in the equation, (x - 3), to solve for x.

Explanation:

The question relates to pyramid volume and the formulation of mathematical equations. First, it requires understanding that the volume of a pyramid is derived using the formula V = 1/3 * a² * h, where V is the volume, a is the length of the side of the square base, and h is the height of the pyramid. Since the height is stated as 3 cm less than the base (x), we can interpret this in the formula as h = x - 3.

Replacing these values in the volume formula gives us V = 1/3 * x² * (x-3). As the volume given is 162 cubic centimeters, this forms the equation: 162 = 1/3 * x² * (x-3). Simplifying this equation would provide the base length x in cm.

Learn more about Pyramid Volume here:

https://brainly.com/question/17615619

#SPJ12

Rewrite the following equation in slope-intercept form. 19x − 20y = -13 Write your answer using integers, proper fractions, and improper fractions in simplest form.

Answers

Y= 0

19x = -13
X= -13/19

X=0

-20y=-13
Y= 13/20

Final answer:

To rewrite the equation 19x - 20y = -13 in slope-intercept form, you subtract 19x on both sides and then divide by -20 to isolate y. The resulting equation is y = (19/20)x + 13/20.

Explanation:

To rewrite the equation 19x - 20y = -13 in slope-intercept form, follow these steps:

Move 19x to the other side by subtracting it from both sides: -20y = -19x - 13

Divide by -20 to isolate y: y = (19/20)x + 13/20

Therefore, the equation in slope-intercept form is y = (19/20)x + 13/20.

The population of a city in 2005 was 18000. By 2010, the city’s population had grown to 45,000. Economists have determined that the growth is exponential. If they are correct, what is the projected population for 2015?

Answers

first do 45000-18000=27,000
and approx projected population is 45,000+18000=63,000
your answer is 63,000

Solution:

we are given that

The population of a city in 2005 was 18000.

By 2010, the city’s population had grown to 45,000.

Economists have determined that the growth is exponential.

As we know the exponential growth is defined by the relation

[tex]P=p_0e^{rt}\\ \\ \text{where P is the population at time t and initial population is } p_0\\[/tex]

Here we have [tex]p_0=18000, P=45000, t=5[/tex]

substitute these values we get

[tex]45000=18000e^{5r}\\ \\ r=0.183[/tex]

So we get

[tex]P(t)=18000e^{0.183t}[/tex]

So For population is 2015 substitute t=10

[tex]P(10)=18000e^{0.183*10}[/tex]

[tex]P(10)=112209.9598 [/tex]

The projected population for 2015 is 112210

vivien's handspan measure 18.5 centimeters.estimate the number of times Vivien uses her handspan to measure a length of 1 meter 75 centimeters

Answers

1.75 meters is 175 centimeters
Estimate what is 175 ÷ 18.5 . It cant be 10 because 18.5 is 185 which is greater than 175 , so lets estimage Vivien will have to use her handspan 9 times.

Final answer:

Vivien would use her handspan, which measures 18.5 centimeters, approximately 9 times to measure a length of 1 meter 75 centimeters. This estimate assumes precision in her handspan measurement.

Explanation:

To estimate the number of times Vivien uses her handspan to measure a length of 1 meter 75 centimeters, we need to divide the total length by the length of her handspan. Since Vivien's handspan measures 18.5 centimeters, and the total length to measure is 1 meter 75 centimeters (which equals 175 centimeters), we perform the following calculation:

Convert 1 meter 75 centimeters to all centimeters: 1 meter = 100 centimeters, so 1 meter 75 centimeters = 100 + 75 = 175 centimeters.Divide the total length by the length of Vivien's handspan: 175 cm/18.5 cm =9.45945945945946Round the result to the nearest whole number to estimate the number of handspans: approximately 9 times (since we typically round down when the decimal is less than 0.5).

This is an estimation technique that assumes Vivien's measurement with her handspan is accurate. The accuracy of this measurement can vary based on several factors, including the precision of Vivien's handspan and the method used for measuring.

Find the sum. 13(9−6m)+14(12m−8)

Answers

Final answer:

To solve the expression 13(9−6m)+14(12m−8), distribute the numbers and combine like terms to get the sum, which is 90m + 5.

Explanation:

To find the sum of the expression 13(9−6m)+14(12m−8), we need to distribute the numbers outside the parentheses across the terms inside the parentheses and then combine like terms.

Distribute the numbers:

13 × 9 = 117

13 × (−6m) = −78m

14 × 12m = 168m

14 × (−8) = −112

Now we combine like terms:

117 (−78m) + (168m − 112)

Simplifying this we get:

−78m + 168m = 90m

−112 + 117 = 5

So the sum is 90m + 5.

assume that y varies directly with x, then solve if y=12 when x=15, find x when y=21

and can someone explain to me how they got the answer because i got 16.8

Answers

24 beacuse x is 3 more than y

If y is 12 when x is 15 that means that x is 3 more than y. x=y+3 so when y is 21, x=21+3 so x=24

Use log2 3 =1.5850 and log2 2 =1 to approximate the value of the expression log2 2,304

Answers

2^11.17 = 2304.119777

Your supervisor has asked you to help build the raised platform for the food court. The base needs to be made of pairs of parallel lines. Select the parallel lines from the choices below.

Answers

The options in the attached images.
Remember that parallel lines are those lines that have equal slopes.
That is, the angle with respect to the horizontal axis is equal.
We observe that we have two pairs of parallel lines.
A vertical pair
A horizontal pair
Answer:
A vertical pair
A horizontal pair
See attached images.

What number is equivalent to: 4 x 1,000,000,000 + 5 x 1,000,000 + 9 x 10,000 + 8 x 100 + 7 x 1?
A. 45,987
B. 459,871
C. 4,509,807
D. 4,005,090,807

Answers

4 * 1,000,000,000 = 4,000,000,000
5 * 1,000,000 = 5,000,000
9 * 10,000 = 90,000
8 * 100 = 800
7 * 1 = 7
put it all together
4,005,090,807

Option D.)

Hope this helps

Convert 1 3/4 feet into inches

Answers

It is 21 inches because it is

1 3/4 feet = 1.75 ft
1.75 x 12 = 21 inches

answer
21 inches

A bag contains 9 marbles: 4 are green, 2 are red, and 3 are blue. Lisa chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that the first marble is red and the second is blue? Write your answer as a fraction in simplest form.

Answers

1/9 is the probability the first marble is red. 1/6 is the probability for a blue marble.

The points (j, - 8) and (1, - 2) fall on a line with a slope of - 6. What is the value of j?

Answers

Answer:
j = 2

Explanation:
Slope of the line can be calculated using the following rule:
slope = [tex] \frac{y2-y1}{x2-x1} [/tex]

We are given:
slope = -6
point (j,-8) representing (x1,y1)
point (1,-2) representing (x2,y2)

Substitute with the givens in the above equation and solve for j as follows:
slope = [tex] \frac{y2-y1}{x2-x1} [/tex]
-6 = [tex] \frac{-2-(-8)}{1-j} [/tex]
-6(1-j) = -2-(-8)
-6 + 6j = 6
6j = 6+6 = 12
j = 12/6
j = 2

Hope this helps :)

1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?

2. What is the wave speed of a wave that has a frequency of 50 Hz and a wavelength of 0.10 m?

3. What is the frequency of a wave that has a wave speed of 20 m/s and a wavelength of 0.50 m?

4. What is the frequency of a wave that has a wave speed of 80 m/s and a wavelength of 0.20 m?

5. What is the frequency of a wave that has a wave speed of 120 m/s and a wavelength of 0.40 m?

6. What is the wavelength of a sound wave that has a speed of 340 m/s and a frequency of 440 Hz?

7. What is the wavelength of a sound wave that has a speed of 340 m/s and a frequency of 880 Hz?

8. What is the wavelength of a sound wave that has a speed of 250 m/s and a frequency of 400 Hz?

9. What is the wave speed of a wave that has a frequency of 50 Hz and a wavelength of 2.0 m?

10. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.50 m?

please answer fast

Answers

1. 30 Hz
2. 5 Hz
3. 40 m/s
4. 400 m/s
5. .48 m/s
6. .77 m/s
7. .39 m/s
8. .625 m/s
9. 100 Hz
10. 50 Hz

Answer:

For 1: The wave speed of the wave is 30 m/s

For 2: The wave speed of the wave is 5 m/s

For 3: The frequency of the wave is 40 Hz

For 4: The frequency of the wave is 400 Hz

For 5: The frequency of the wave is 300 Hz

For 6: The wavelength of the wave is 0.773 m

For 7: The wavelength of the wave is 0.386 m

For 8: The wavelength of the wave is 0.625 m

For 9: The wave speed of the wave is 100 m/s

For 10: The wave speed of the wave is 50 m/s

Step-by-step explanation:

Wave speed is defined as the product of its wavelength and frequency.

Mathematically,

[tex]\text{Wave speed}=\lambda\times \nu[/tex]

where,

[tex]\lambda [/tex] = wavelength of the wave

[tex]\nu [/tex] = frequency of the wave

For 1:

We are given:

[tex]\lambda =0.30m\\\\\nu=100Hz[/tex]