Mathematics High School

Explain why the product of two
negative integers is not negative. Use (−1)(−1)
as an example.

Answers

Answer 1
Because if you want to know -2 *-2
The minus also have there multiplication
As we know (-*-)=(+)
(-*+)=(-)
(+*+)=(+)

Related Questions

- 7x + 14 = 4x - 19
Please help

Answers

Answer:

-7x+14=4x-19

          -7x

      14-3x-19

         -3x-15

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.
x=3

a cylindrical tank of radius 2.5m and height 1.6m initially contains water of depth of 20cm .water is pumped into the tank at the rate of 1.35litres per second.giving your answer in the nearest minute calculate the time in hours and minute it takes to fill the tank​

Answers

20cm=0.2m
1.6m-0.2m=1.4m
radius=2.5, area of circle=19.635m^2
19.635m^2x1.4m=27.489m^3
1litre=0.001m^3
1.35litres=0.00135m^3
27.489^3/0.00135m^3=20362s
60s=1min
20362s/60s=339.37min
=5 hours and 39 minutes
(intermediate steps are left in 5s.f.)
hope this helps

i need to know this problem

Answers

C jdixixizi disused is

[tex]x \geqslant 1[/tex]

Thirty six divided by 9000 long division

Answers

Answer:

9000/6=1500

and

6/9000=0.00067

Jill made 20 muffins. She put them into 3 boxes and has two muffins left. How many are in each box if they all contain the same amount of muffins?​

Answers

Subtract 2 from 20. Then, divide 18 by 3 and that should give you 6.

Help please solve by factoring

Answers

We know that 6x(-7) is -42 and we also know that 6+(-7) is -1.

So we can write

[tex]x^2+6x-7x-42[/tex]

[tex]x(x+6)-7(x+6)[/tex]

[tex](x-7)(x+6)[/tex]

So our solutions are [tex]x=7,-6[/tex]

What is 6/12 in simplist form?

Answers

It’s 1/2 there you go I hope this was helpful

At a hardware store, you can buy a set of four wrenches for seven dollars and a set of 16 screwdrivers for $28. The prices are proportional. True or false?

Answers

Answer:

Yes

Step-by-step explanation:

The constant is $1.75 each

Someone please help and let it be the right answer I'm failing math

Answers

Answer:

Step-by-step explanation: the triangle is negative 6, plus 18 half in the middle.

Write a ratio that simplifies to 2:7

Answers

Answer:

4 : 14

Step-by-step explanation:

Step 1:

2 : 7 = 4 : 14

Answer:

4 : 14

Hope This Helps :)

ARITHMETIC SEQUENCES HELP. (QUESTIONS ATTACHED)

Answers

The answer is b because it looks like it

HELP ME PLEASEEE. I WILL MARK U BRAINLIESTTTT.

Answers

Edgenuity’s sample response for this question:

Sublimation occurs because the atoms in a solid must gain enough energy to form a gass without passing through the liquid state. Low air pressure and large amounts of energy, often in the form of heat, allow the atoms to move fast enough to overcome the attractive forces between them.

If you need an original response here’s my take!!:

Sublimation happens when a solid turns directly into a gas. For this to happen, there must be low air pressure and immense heat energy. This allows atoms to quickly move and perform sublimation.

Briefly explain how to convert a fraction to its decimal
form.

Answers

Answer:

you just divide

Step-by-step explanation:

Just divide the top of the fraction by the bottom, and read off the answer!

Answer: So what my teacher always told me to do was act like a fraction was a tree. The tree always falls to the left which then outs the fraction as a division problem. You solve the division problem

Step-by-step explanation:

Ok so for example, lets use [tex]\frac{1}{2}[/tex]. Drawing it as a tree it then falls to the left. Therefore it becomes 1 ÷ 2. So 2 can not go into one therefore you need to put a decimal point at the top and add a zero behind the 1 under the bar. The 1 then becomes a 10, therefore 2 can go into 10 5 times. However the answer is not 5. You have to remember to bring the decimal point that you placed before the 5. In conclusion hte answer is .5 . This may be confusing because I am not able to include any photos but hopefully you'll get the point.

derive f=ma solve 9.1

Answers

Answer:

I hope it helped you and you understood it.

Answer:

we know that,

Force is directly proportional to rate of change of momentum.

→ F [tex]\propto[/tex] (Pv - pu)/t

→ F = k p (v - u)/t

→ F = k p a

Here, body must have some mass.

→ F = ma

Derived.

Cheryl wants you find the number of hours 7th graders do work at home each week. There are 297 boys and girls in 7th grade, Cheryl random surveyed 50 girls in the entire school to find a number of our 7th graders do homework each week described why she would get a biased sample​

Answers

Answer: There are a total of 297 students in the 7th grade. Rough estimates would say that about half of that number are boys and half are girls. Asking only 50 random girls would be biased because not only would it not be all of the girls (the number of girls would be around 148 or 149) but it would also be ignoring the roughly 148 to 149 boys there are on estimate. The sample would be biased because it would be ignoring the opinions of more than half the seventh grade.

(FULL CREDIT TO maksimylian, I DID NOT WRITE THIS ANSWER)

Answer:

Randomly surveying 50 girls would most likely bring non-seventh-graders into the sample.

The sample also does not take any boys into account, and they most likely make up about half of the seventh-grade population.

The results would not be a representative sample of the population.

Step-by-step explanation:

From edge

HELP PLZ I WILL GIVE U 10 POINTSS

Answers

Answer:

1/40

Step-by-step explanation:

You put 4/1 to put it into a fraction and then flip the fraction to times 1/10 (1/4)

to get the answer of 1/40

Help me guys! This question is hard for me

Answers

Answer:

should be answer A

Step-by-step explanation:

Answer:

I'm pretty sure the answer is D

Step-by-step explanation:

it appears to be a reflection to the plane below it. and it is one of the only ones to remain its shape and stay rigid(the same)

A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the z-score corresponding to the given value and use the z-score ti determine whether the value is significant.

Answers

Answer:

It is 4

Step-by-step explanation:

What is the greatest common factor 12x^5 and 8x^3

Answers

Hey there! I'm happy to help!

Let's see what makes 12x^5.

3·2·2·x·x·x·x·x

And for 8x^3...

2·2·2·x·x·x

We see that both of these have two 2s and 3 xs, so our GCF is 2·2·x·x·x which is 4x^3.

Have a wonderful day! :D

Ratio to percent 16:25

Answers

Solution:
0.64
Steps to Solve:

Step One: Rewrite the ratio as a fraction
16 : 25=
16
25
Step Two: Divide the numerator by the denominator
16
25
=16÷25
16÷25=0.64

Find the coordinates of the midpoint of the segment.
MN with endpoints M 6,12) and N(-6, -6)
The coordinates are

Answers

Answer:

[tex]MP= (-6,3)[/tex]

Step-by-step explanation:

[tex]MP= (\frac{x_1+x_2}{2} )(\frac{y_1+y_2}{2} )\\MP= (\frac{6+-6}{2} )(\frac{12+-6}{2} )\\MP= (\frac{-12}{2} )(\frac{6}{2} )\\MP= (-6,3)[/tex]

Algebra 1. 9th Grade
-12-8=5/2x​

Answers

Answer:

-1/8

Step-by-step explanation:

1) -12 - 8 = -20

2) -20 = 5/2x

3) (-20)(2x) = 5

4) -40x = 5

5) x = -5/40 = -1/8

Hope this helps!

The files attached :)
I need help

Answers

Answer:

only doing one page you got the other :)

Step-by-step explanation:

Simplify 2(3x-9)+(2c-10)

Answers

Answer: 2c + 6x - 28

Step-by-step explanation:

6x -18 + 2c - 10

add like terms

2c + 6x - 28

The radius of a circle is 4.8cm. What is the diameter?

Answers

Answer:

9.6cm

Step-by-step explanation:

Since the radius is half of the diameter, to find the diameter, simply multiply the radius by 2.

4.8*2=9.6

Diameter=9.6cm

How do you write 0.000081 in scientific notation?

Answers

scientific notation: 8.1x10^-5

Alex has 19 marbles,
Emily has 5 marbles.
How many more marbles does Alex have than Emily?
marbles

Answers

Answer:

14!

Step-by-step explanation:

Subtract 5 from 19 and get 14!

|x|= 0.25
What value(s) of x make(s) the equation true?
A. -0.25 only
B. 0.25 only
C. 0.5 only
D. -0.25 and 0.25
E. -0.5 and 0.5

Answers

answer: d. -0.25 and 0.25
explanation: the absolute value bar means that any number put into there will be the positive version no matter its original value. therefore, the absolute value of -0.25 and 0.25 is 0.25.

1 inch corresponds to 4ft, what is 2 1/4 inches converted to feet

Answers

Answer:

9 feet

Step-by-step explanation:

2 1/4 can be written as an improper fraction 9/4

we are given:

1 inch ----> corresponds to 4 feet

hence,

2 1/4 inch ---> corresponds to 4 feet x 2 1/4 = 4 x (9/4) = 9 feet

Please help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

#6 is 17 days

Step-by-step explanation:

This is how I answered it

1) 2750 = 550 + 125x

2) subtract 550 from each side

2750-550=2200

so the left over equation is:

2200 = 125x

3) divide each side by 125 to get x by itself

2200÷125= 17.6

4) you are left with: x = 17 days

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