Mathematics Middle School

Decide if each equation is true or false.

7⋅8=56
-7⋅8=56
-7⋅-8=-56
-7⋅-8=56
3.5⋅12=42
-3.5⋅-12=-42
-3.5⋅-12=42
-12⋅72=42

Answers

Answer 1
The third and fifth ones are false. Two negative numbers in the same equation make a positive not a negative
Answer 2
True,false,false,true,true,false,true,false.

Related Questions

Try It for Example 3: Is 3.14144144414444... a rational number? Explain your reasoning. *

Answers

it's irrational

A rational number can be put over a fraction, while this number continues forever

Yo can someone help me out

Answers

Answer:

Second Option: [tex]\frac{7}{8} =7\div8[/tex]

Step-by-step explanation:

A fraction means to divide.

[tex]1\div2=\frac{1}{2}[/tex]

Therefore,

[tex]\frac{7}{8} =7\div8[/tex]

Answer:There are many equivalent fractions to

7

8

;

here are a few:

14

16

,

21

24

,

49

56

,

−

28

−

32

Explanation:

7

8

is the simplest of the equivalent fractions.

Did you (perhaps) intend to ask for the equivalent decimal fraction of

7

8

In this case

7

8

=

7

×

125

8

×

125

=

875

1000

=

0.875

Step-by-step explanation:

At its lowest point, the temperature on Tuesday night had dropped 15.6°C from Tuesday’s high temperature of 8°C. What was the low temperature on Tuesday night?

Answers

Temperature dropped 15.6 degrees from the high that day which was 8 degrees

Problem: 8-15.6= -7.6

The low temperature on Tuesday night was - 7.6 degrees

Yo can someone help me out

Answers

Answer:

11

Step-by-step explanation:

PEMDAS

divide first, then add

Answer: 11

Step-by-step explanation: Divide & multiply first so 12/4 then add 8 which would = 11

Find the missing number of the unit rate. *
4/2 = ?/1

Answers

2/1 is the answer for that

Paolo was asked to find the original dimension of an enlarged pentagon. His solution is shown next to the pentagons. A small pentagon has a bottom side length of x centimeters and left side length of 3 centimeters. A larger pentagon has a bottom side length of 8 centimeters and left side length of 12 centimeters. Write a proportion. StartFraction 3 over 12 EndFraction = StartFraction x over 8 EndFraction Cross multiply. 8 x = 36 Solve for x. x = 4.5 Not drawn to scale What error did Paolo make in his solution?

Answers

Answer:

he didnt mutiply good and and the 3 and 12

Answer:

B

Step-by-step explanation:

A coordinate grid is drawn over a postcard of Da Vinci's Mona Lisa. The postcard is a 1/4 dilation of the original painting. If the tip of Mona Lisa's nose on the postcard is at the point (−4, 2), what would be the coordinates of the tip of her nose in the preimage?

Answers

Answer:

Step-by-step explanation:

(-16,8) is your answer!

model each two-step operation by solving.
-2x-3=5

Answers

Answer:

x=-4

Step-by-step explanation:

You have to do all this math to isolate the variable, so, first,

You have to use the opposite sign of negative 3, which is positive 3, and add on both sides!

Then, you isolate the variable by dividing -2 on both sides, which is...

-4!

The answer is gonna be -4

Write an algebraic expression for each word phrase.

Answers

5n +7

.... Hope this will help....

Answer:

(5 * n) + 7

Step-by-step explanation:

Since we do not know the value of n, we can't write an equation for this. You could also write it as 5n + 6.7 if you'd like. Since letters and numbers don't mix, we can't add 6.7 to 5n. I rounded 6.7 to 7 in my answer. Hope this helped.

what is the GCF of 18 and 63

Answers

Answer: 9


The prime factorization of 63 is: 3 x 3 x 7. The prime factors and multiplicities 18 and 63 have in common are: 3 x 3. 3 x 3 is the gcf of 18 and 63. gcf(18,63) = 9

Answer: The greatest comon factor of 18 and 63 is 9

Step-by-step explanation: 9 is the highest number that can go into both 63 and 18. It goes into 18 twice ( 18/9 = 2, and 63/9=7)

Ralph wants to build a rectangular deck with a predefined area of 792 feet squared. One side of the deck will be 54 feet longer than the other. To find the side lengths, he first writes the equation (x)(x+54)=792 and later simplifies it to (x-12)(x+66)=0, where x is the length of the shorter side. Which of these are the side lengths, in feet, of the rectangular deck? Select all that apply. A. 42 B. 54 C. 12 D. 66 E. 120

Answers

Answer:

C.12 and D.66

Step-by-step explanation:

(12+54)(12)=792

66*12=792

Answer: C. 12 and D. 66

Yo can someone help me out

Answers

Answer:

5+2

Step-by-step explanation:

give the other person braniliest

Answer:

i like ya cut g

Step-by-step explanation:

cut like

Help please! Quantitative comparison.

Answers

Answer:

22. b 23. c 24. a 25. c 26. a 27. d 28. a 29. c 30. d 31. b

Step-by-step explanation:

Answer: The answer for 22 is B.

explanation:✌✌✌

A used boat is on sale for $1,800. Austin makes an offer equal to 2/3 of this price. How much does Austin offer for the boat? $600

Answers

1,200 for the boat because 1800 divided by 3 is 600 and times that by two because its 2/3 and then u get your answer of 1,200$
$1200 because 1800 multiplied by 2/3 = 1200. (1800 x 2) / 3 = 1200

A thunderstorm cloud holds about 6,200,000,000 raindrops. Which of the following shows this number in scientific notation? Answers- F- 0.62*10 to the 10th power G- 6.2*10 to the 9th power H- 6.2*10 to the 8th power J-62.0*10 to the 8th power

Answers

Answer:

the answer is G

which is 6.2*10 to the 9th power.

Step-by-step explanation:

In scientific notation you must leave one digit to the place value of ones

so that one digit is 6

So ue come up with 6.2 when ue eliminate all other zeros and end the decimal point between 6 and 2 and that way you have 6.2*10 to the 9th power

Answer:

G, 6.2*10 to the 9th power.

Step-by-step explanation:

enter the number as a scientific notation

80,000 = .... x 10 to what power

Answers

The answer to this problem is 8,000
Ten to the power of 4, scientific notation:8.0 or 8

Yo can someone help me out

Answers

Answer:

Step-by-step explanation:

5 divided by 6 is the answer

Complete 5 divided by 6 which equals 1.2 and there’s your answer to your problem

Hope it helps

Does a given translation, reflection, or rotation, followed by a given dilation, always map a figure to the same image as that same dilation followed by that same translation, reflection, or rotation ? Explain .

Answers

rotatian girl rotation

Answer: rotation

Step-by-step explanation:

When measuring a golf ball, the volume was found to be 40cm3. The mass of the golf ball was 60 grams. Calculate the density.

240 g/cm3
1.5 g/cm3
20 g/cm3
0.75 g/cm3

Answers

Answer:

1500 kilogram/cubic meter.

Step-by-step explanation:

1500 kilogram/ cubic meter

What steps would you take in order to solve the equation m + 61 = 39 ? add 61 and multiply by add 61 and multiply by 2 subtract 61 and multiply by subtract 61 and multiply by 2

Answers

First you want to isolate m. To do this, subtract 61 from both sides to get m=-22.

WELP WILL MARK BRAINLEST 4. Part A: Jerry claimed that the expression -8 + d is negative. Determine whether Jerry's claim is always true, sometimes true, or never true. Provide evidence to support your conclusion. (10 points)

Answers

sometimes true, depends on d. ex: -8 + -8 is negative, but -8 + 9 is positive

Answer:  His claim is SOMETIMES true.

Let's just take an example, d=2.

-8 + 2 equals -6, so negative. BUT, let's say d=9.

-8 + 9 equals 1, 1 is positive.

Jerry's claim is sometimes true.

Two stores offer differently priced sales for the same paper towels, according to the table below. Which store offers the better deal, based on a lower unit price per roll? Store 1 Store 2 Paper towel rolls 12 15 Price $3.30 $3.50 Store ___ has the better deal. Numerical Answers Expected!

Answers

Answer:

Store 2 has a better deal with 0.233 cents per role

Step-by-step explanation:

If Store 1 has 12 Paper Rolls that cost $3.30 and Store 2 has 15 Paper Rolls that cost $3.50, we can find the answer by using division.

price/amount: 3.3/12=0.275 cents per role

price/amount: 3.5/15=0.233 cents per role

Answer:

Step-by-step explanation:

the answer is b

help me plz i dont get it

Answers

Answer:9b+10s

Step-by-step explanation:

Answer/Explanation:

The correct answer should be D.) 9b + 10x

Please mark Brainliest!!!  =D

How do you divide a whole number by a decimal? Example 9.00 divided by 6.75

Answers

Answer to the example is 1.3 repeating

Step-by-step explanation:

The number we divide by is called the divisor. To divide decimal numbers: Multiply the divisor by as many 10's as necessary until we get a whole number. Remember to multiply the dividend by the same number of 10's.

Answer:

1.3

Step-by-step explanation:

The number that we divide is called the divisor. To divide decimal numbers you have to : Multiply the divisor by as many 10's as necessary until we get a whole number. Remember to multiply the dividend by the same number of 10's.

I would classify - 4/2 as a _________, because _________??

Answers

Answer

4/2 (if it's a fraction) it's a rational number

Step-by-step explanation:

because: rational numbers have integers AND fractions AND decimals, so we can tell that 4/2 is a rational number

Answer:

Answer down below!

Step-by-step explanation:

as it being a fraction, it can be a rational number. Since it has the numerator and denominator as an integer.

15=-6 you solve the left side, 7+6 which is 15

then you solve the right side, -1x6 which is -6

Answers

Answer:

15=13

Step-by-step explanation:

15=-6 you solve the left side, 7+6 which is 15?

15=-6 =

7+6 = 13

15=13

i'm not sure...

15=13 would be the answer : )

15-1.5/d
Turn this into word phrase

Answers

Answer:

fifteen minus one point five divided by D

Step-by-step explanation:

15-1.5/d

15= fifteen

-1.5= minus one point five

/= divided by

d=D

now put that all together and get fifteen minus one point five divided by D

fifteen minus one point five divided by D

what is the answer to x/6+5-3=-2-4

Answers

Answer:

X = -48

Step-by-step explanation:

Image for explanation

Point B is the center of the circle shown, and the length of arc AC is 8π. What is the area of the circle?

Answers

Answer:

[tex]A=324\pi \text{ units}^2\approx1017.88\text{ units}^2[/tex]

Step-by-step explanation:

The formula for arc length is:

[tex]\stackrel{\frown}{A}=2\pi r(\frac{\theta}{360}})[/tex]

Where Θ is measured in degrees.

We know that the arc length is 8π when the degree is 80. So, substitute 8π for A and 80 for Θ:

[tex]8\pi=2\pi r(\frac{80}{360})[/tex]

Divide both sides by 2π:

[tex]4=r\frac{80}{360}[/tex]

Simplify the fraction:

[tex]4=\frac{2}{9}r[/tex]

Multiply both sides by 9/2:

[tex]r=18[/tex]

So, the radius is 18.

Now, we can find the area of the circle. The formula for the area of a circle is:

[tex]A=\pi r^2[/tex]

Substitute 18 into r:

[tex]A=\pi (18)^2[/tex]

Simplify:

[tex]A=324\pi \text{ units}^2\approx1017.88\text{ units}^2[/tex]

And we're done!

Answer:

A

Step-by-step explanation:

What is 367=2389+3717+21831737 also, 29s=29a=938129= ?

Answers

Answer:

1. 21837843

2. 28s792215

Step-by-step explanation:

hope this help

I also have the same question it helped a lot
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