solve the following: all fractions should be reduced to lowest terms and mixed numbers. -1 1/4 x (-2/5)=

Answers

Answer 1

-1 1/4 * (-2/5) =

= -5/4 * (-2/5)

= 10/20

= 1/2

Answer 2

Convert -1 1/4 to the mixed number -5/4.

Then the product of -1 1/4 and -2/5 is (-5/4)(-2/5) = 10/20, or 1/2.

Please, do not use " x " to indicate multiplication. " x " is reserved for naming variables. Instead, use " * " to indicate mult.

Thus, your problem is best written -1 1/4 * -2/5

Related Questions

Find f. f '''(x) = cos(x), f(0) = 4, f '(0) = 2, f ''(0) = 6

Answers

Given that every integration has constant C, and is solved by the 0 conditions stated in the problem;
f'''(x) = Cos(x)
f''(x) = sin(x) + 6 after f''(0) = 6
f'(x) = -cos(x) + 6x + 2 after f'(0) = 2
f(x) = -sin(x) + 3x^2 + 2x + 4 after f(0) = 4

How many dozens are there in 22 gross of nails

Answers

One gross is 144 nails. You have to multiply 22 by 144 to see how many nails in total there are:
22 * 144 = 3168
One dozen has 12 items. So in order to see how many dozens there are, you have to divide 3168 by 12:
3186 / 12 = 264

The correct answer is 264 dozens.

In 22 gross of nails, there are 264 dozens as one gross is equal to 12 dozen.

To find out how many dozens are there in 22 gross of nails, we need to determine the number of dozens in one gross and then multiply it by 22.

One gross is equal to 12 dozen.

So, to find the number of dozens in 22 gross of nails.

we can multiply 12 (number of dozens in one gross) by 22:

12 x 22

= 264

Therefore, there are 264 dozens in 22 gross of nails.

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Lin was waiting to check out at a store. She estimated her total bill to be $20. The actual total was $24.16. What is the difference between Lin’s estimate and the actual total?

Answers

I think its 4.16 I'm not sure tho

Answer:

4.16

Step-by-step explanation:

Sence Lin estimated $20 and her actucal bill was $24.16. To find the difference, we subtract 20 from 24.16.

[tex]24.16-20=4.16[/tex]

Is the symbol (x¯¯) used for the population mean or sample mean?

choices are.....
population mean
sample mean

Answers

it use for population mean
x=poluation mean

Final answer:

The symbol x is the sample mean, and the Greek symbol μ is the population mean.

Explanation:

The symbol x is the sample mean, and the Greek symbol μ is the population mean. Calculating the Standard Deviation: If x is a number, then the difference x - mean is called its deviation. In a data set, there are as many deviations as there are items in the data set. The deviations are used to calculate the standard deviation. If the numbers belong to a population, in symbols, a deviation is x - μ. For sample data, in symbols, a deviation is x - x.

(40 points + Brainliest for right answer).

Answers

the correct answer is C

the temperature of a pot of water is shown. the temperature of the water changed -2.5 degree F per minute. What was the temperature after 20 minutes?

Answers

-50 degree f because speed is -2.5 times time (20)
=-50

Paul is riding his bike 48 miles to the beach. His average rate of speed is 13.8 miles per hour. Paul stopped for a snack after 3 hours. How many miles does he have to go after his snack? Round your answer to the nearest tenth if necessary.

Answers

the answer is 6.6 miles

13.8 miles per hour x 3 hours = 41.4 miles ( what he already rode)

48 - 41.4 = 6.6 more miles to go

A polygon has vertices at (4, 1), (4, 7), (10, 7) and (10, 1). How does the perimeter of the polygon change if each coordinate is multiplied by 3?

Answers

check the picture below.

multiplying each point by 3, will give us the larger square of (12,3), (13, 21), 30,21) and (30,3).

notice what happened to the perimeter.

After doing this I got 1/4. Can someone plz show and explain what I did wrong? 7- 3r = r - 4(2 + r)

Answers

First distribute on the right
7-3r=r-8-4r

Combine like terms
7-3r=-4-3r

Add 3r to both sides
7=-8

The resulting statement is false so there is no real number solution.

Final answer: No solution

A pizzeria baked 12 pizza pies in 3 hours. At this rate, how many pizza pies can they bake in 7 hours?

Answers

28; 12 divided by 3 is four. That is the rate. Then multiply 7x4=28

first find the hourly rate for how many pies they bake in 1 hour and multiply it by 7

12 pizzas / 3 hours is 4 pizzas per hour

4 pizzas per hour * 7 hours = 28 pizzas

Atif has a z score of 1.02 from a converted iq score. from a z table, the percentage between his score and the mean is 34.61%. what percent of people have iqs at or lower than atif's score?

Answers

Answer: 84.61%

Explanation.
Refer to the diagram shown below.

When the z-score is z = 0, then the area under the distribution curve is 50%, which corresponds to the mean, μ.

The given z-score is greater than zero, so the shaded area is 34.61%. to the right of z=0
The area to the left of z = 1.02 is 50% + 34.61% = 84.61%.
This percentage represents the people with IQs at or lower than Atfif's score.

Lilly has a bag of 140 colored marbles. The bag has an equal number of green and blue marbles and an equal number of red and yellow marbles. If Lilly arranged all of the green marbles in groups of 8 and all of the blue marbles in groups of 7, how many red marbles are in the bag?

Answers

Okay. I think to find the number of green and blue marbles each, we have to find the LCM of 8 and 7. The LCM of 8 and 7 is 56. There are 56 green marbles and 56 blue marbles. That a total of 112 marbles combined. 140 - 112 = 28. There are 28 red and yellow marbles. There are an equal number of both. 28/2= 14. There are 14 red marbles in the bag.

Silver is a white metal and is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does not react with water but it does react with nitric acid. Silver tarnishes when exposed to air or light. What is a physical property of silver?

Answers

A physical property is that it is a white metal. The other descriptions are all chemcial properties such as how it reacts and conducts. Density could also be another answer as it is also physical.

density because everything else would fall under the category of chemical properties instead of physical properties and the other 3 properties would result in a chemical change while density would not

Convert 5.4 ⋅ 103 to standard form. 0.0054 0.00054 5,400 54,000

Answers

5.4 * 10³ = 5,400 is your Answer

Answer:

5400

Step-by-step explanation:

Convert 5.4 ⋅ 103 to standard form.

[tex]5.4 \ times \ 10^3[/tex]

for 10^3 we add 3 zeros

10^3= 10 times 10 times 10=1000

[tex]5.4 \ times \ 10^3[/tex]

Replace 10^3 by 1000. then multiply with the decimal number

[tex]5.4 \ times \ 1000[/tex]

When we multiply by 1000 we move the decimal point 3 places to the right

5400

:what does this problem solve as
1/2(4x−5)+52=10

Answers

I'm pretty sure its x=−79/4

In a fraternity with 37 members, 18 take mathematics, 5 take both mathematics and art history, and 8 take neither mathematics nor art history. How many take art history but not mathematics?

Answers

fraternity of 32 members with 8 taking neither math or physics
Of the 24, 5 took both. 24 - 5 = 19 taking one. 18 taking just Math.
Just 1 took only Physics.

checking our answer:
just Math 18
just Physics 1
both 5
neither 8
total 32
just physics = 32 - 8 -5 -18 = 1

Answer:

Fraternity of 32 members with 8 taking neither math or physics

Of the 24, 5 took both. 24 - 5 = 19 taking one. 18 taking just Math.

Just 1 took only Physics.

Step-by-step explanation:

Over a 12 hour period from 8 pm to 8 am the tempeture fell a steady rate 8°F to 16°F if the temperature fell at the same rate every hour what was the temperature at 4 am

Answers

What we know:
12 hour period from 8pm to 8am
temperature dropped from 8°F to 16°F from 8pm to 8am

We need to find temperature at 4 am.

We can start by setting up points:
8pm is are starting point with 8°F, we can express it as (0,8), 0 represents initial time from 0 to 12 hour span.
8am is the ending point with 16°F, we can express it as (12,16), 12 represents the end time of 0 to 12 hours span.
We will use these points to find slope.
slope=m=(16-8)/(12-0)=8/12=2/3

Now, we can set up an expression to find any temperature at a specific time. Aslo, x represents the hours not the the specific time of 4am. We will use 8 since 4am is the 8th hour of the 12 hour span. Using slope of 2/3 and the y intercept of (0,8) since we were already at 8°F at the initial time of 0 we have the function:

f(x)=2/3x+8

f(8)=2/3(8)+8= 40/3≈13.3°

4 1/6 divided by 1 2/3 =

Answers

are they fractions?
if so then the answer is
5/2 or mixed number form would be 2 1/2

Change both expressions to improper fractions:

25/6 divided by 5/3. Since the LCD is 6, let's rewrite that as 25/6 div. by 10/6.

Answer: 25/10 = 2.5, or 2 1/2

If a radio station call letters must begin with either K or W and must include either two or three additional letters, how many different possibilities are there?

Answers

There are a total of 26 letters that can be made to follow. There are 4 independent events here, namely:

First: Starts with K and followed by two additional letters = 1 * 26 * 26 = 676

Second: Starts with K and followed by three additional letters = 1 * 26 * 26 * 26 = 17,576

Third: Starts with W and followed by two additional letters = 1 * 26 * 26 = 676

Fourth: Starts with W and followed by three additional letters = 1 * 26 * 26 * 26 = 17,576

The total possibilities that can be made from here is:

Total possibilities = 676 + 17,576 + 676 + 17,576

Total possibilities = 36,504

There are 365,493 blue pens and 549,384 black pens how many more black pens are there then blue pens

Answers

Take the larger number and subtract the smaller number and you get 183,891

By subtracting the number of blue pens from the number of black pens, we find that there are 183,891 more black pens than blue pens.

To find out how many more black pens there are than blue pens, we need to subtract the number of blue pens from the number of black pens. The student provided the numbers as 365,493 blue pens and 549,384 black pens.

Here is the calculation:

Number of black pens: 549,384Number of blue pens: 365,493Difference (black pens - blue pens): 549,384 - 365,493 = 183,891

There are 183,891 more black pens than blue pens.

At a sports camp, there is one counselor for every 12 campers. If there are 156 campers attending the camp, which equivalent ratios could be used to find the number of counselors?

Answers

Hello There!

It is 1:12 for counselor to camper
If there are 156 campers, follow these steps:
1 + 12 = 13
156/12 = 13
1 x 13 = 13
12 x 12 = 156
The ratio now is 13:156.
Meaning there are 13 counselors.

Hope This Helps You!
Good Luck :)

- Hannah ❤

The equivalent ratios could be used to get the number of counselors who will be 13.

What is division?

Division means the separation of something into different parts, sharing of something among different people, places, etc.

At a sports camp, there is one counselor for every 12 campers.

If there are 156 campers attending the camp.

The equivalent ratios could be used to get the number of counselors who will be

⇒ 156 / 12

⇒ 13

The equivalent ratios could be used to get the number of counselors who will be 13.

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A child can explain that 3x2 represents three sets of two

Answers

A child can explain that 3×2 represents 3 sets of 2. Concrete operational, mathematical transformations. A child doesn't sneak a cookie when his mom outside because he thinks that she can see what he sees.

A child can correctly explain that 3 x 2 represents three sets of two. This child is most likely in Piaget's Concrete Operational stage option (C) is correct.

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.

As we know,

A young toddler may properly identify three sets of two as being represented by 3 x 2.

This child is most likely in Piaget's Concrete Operational stage.

Thus, a child can correctly explain that 3 x 2 represents three sets of two. This child is most likely in Piaget's Concrete Operational stage option (C) is correct.

The complete question is:

A child can correctly explain that 3 x 2 represents three sets of two. This child is most likely in Piaget's _____________ stage.

sensorimotor stagepreoperationalconcrete operationalformal operational

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sales price is 67.50 sales tax is 5% how much is the total amount paid

Answers

$70.88

x/67.5=5/100
cross multiply
100x=337.5
divide 100
x=3.375 or 3.38

67.50+3.38= 70.88

About 19/20 of celery is water. What percent is this

Answers

Percents have to fit into 100.

So, 20x5= 100
19x5=95

So, your answer is: 95%

Hello There!

19/20
You need to get the denominator to 100.
20 x 5 = 100
19 x 5 = 95

It is 95%

Hope This Helps You!
Good Luck :)

- Hannah ❤

Picture above, please make sure to show work:)

Answers

V = (pi)(radius^2)(height) or (pi)(r^2)(h)
= (3.14)(8^2)(8)
= (3.14)(8*8)(8)
= (3.14)(512)
= 1607.7 in^3

Which equation represents the linear function that is shown on the graph below?

ANSWERS:

y= 1/2x +4

y= 1/2x -2

y= 4x -2

y= -2x +4

Answers

Answer is choice B) y = 1/2x - 2

which is the same as y = (1/2)x - 2 or can be written as [tex]y = \frac{1}{2}x - 2[/tex]

If you wanted the decimal form version, then the equation would be y = 0.5x - 2
------------------------------------------
------------------------------------------

Explanation:

The four points on this line are
(4,0)
(6,1)
(8,2)
(10,3)

Let's pick two of these points to find the slope.

The two points I'll pick are (4,0) and (6,1)

The first point is (4,0) so (x1,y1) = (4,0) meaning that
x1 = 4
y1 = 0

The second point is (6,1) so (x2,y2) = (6,1) meaning that
x2 = 6
y2 = 1

Using the slope formula, we find...
m = (y2 - y1)/(x2 - x1)
m = (1-0)/(6-4)
m = 1/2
m = 0.5

The slope in fraction form is 1/2. This means that each time we move up 1 unit, we move to the right 2 units.
slope = rise/run = 1/2
Rise = 1
Run = 2

The fraction 1/2 is equivalent to the decimal form 0.5

------------------------------------------

Let's use the slope m = 0.5, along with the point (x,y) = (4,0) to find the y intercept b

y = m*x + b
y = 0.5*x + b
0 = 0.5*4 + b
0 = 2 + b
0 - 2 = 2 + b - 2
-2 = b
b = -2
The y intercept is -2 meaning that the line crosses the vertical y axis at -2.

Therefore the equation is y = 0.5x - 2 after we update y = mx+b

This is the same as y = (1/2)x - 2 or y = 1/2x - 2 which is why choice B is the answer. The parenthesis help make it clear that x is not in the denominator; though technically they aren't needed.

The equation y = (1/2)x - 2.

What is a function?

A relation between a collection of inputs and outputs is known as a function. A function is a connection between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain.

We have points from the graph (6,1) and (8,2).

The slope of the equation is;

m = (2-1) / (8-6)

m = 1/2

And the y-intercept;

We have the slope-intercept form of the equation,

y = mx + b

y = x/2 + b

To find the y-intercept, we substitute the point (6,1)

b = -2

Therefore, we have the equation of the linear function y = (1/2)x - 2.

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mrs. baker purchased a number of juice packs at a cost of $0.30 each and a loaf of bread that cost $1.19. the total cost of her purchases was 2.99. which equation would you use the determine how many juice packs mrs. baker purchased

Answers

0.30x + 1.19 = 2.99

hope this helps

Answer:

0.30j + 1.19 = 2.99

Step-by-step explanation: Hope this helps! :D

A laptop has a listed price of 715.95 before tax. If the sale tax rat is 9.25%, find the cost of the laptop with the sales tax included. Round your answer to the nearest cent, as necessary.

Answers

$715.95 + 9.25% (66.22)= $782.18

Prove the identity csc^2xsec^2x=sec^2x+csc^2x

Answers

[tex]\bf csc(\theta)=\cfrac{1}{sin(\theta)} \qquad % secant sec(\theta)=\cfrac{1}{cos(\theta)} \\\\\\ and\qquad sin^2(\theta)+cos^2(\theta)=1 \\\\ -------------------------------\\\\ csc^2(x)sec^2(x)=sec^2(x)+csc^2(x)\\\\ -------------------------------\\\\ sec^2(x)+csc^2(x)\implies \cfrac{1}{cos^2(x)}+\cfrac{1}{sin^2(x)}\implies \cfrac{sin^2(x)+cos^2(x)}{cos^2(x)sin^2(x)} \\\\\\ \cfrac{1}{cos^2(x)sin^2(x)}\implies \cfrac{1}{cos^2(x)}\cdot \cfrac{1}{sin^2(x)}\implies sec^2(x)csc^2(x)[/tex]

The difference in elevation of a helicopter and a submarine is 18 1/2 meters. The elevation of the submarine is -7 3/4 meters. Write and solve an equation to find the elevation h (in meters) of the helicopter

Answers

The helicopter is above sea level and the sub below sea level.

One way in which to write an equation here is |-7 3/4 meters| + h = 18 1/2.

let the elevation of the submarine = s, and elevation of the helicopter = h

the difference in elevation = h - s = 18 1/2

the question gives us the value of s: -5 3/4

so sub that into our first equation

h - (-5 3/4) = 18 1/2
h + 5 3/4 = 18 1/2
h = 18 1/2 - 5 3/4
h = 12 3/4

hope it helps :)

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