Mathematics Middle School

Which equation has the correct sign on the product?

A. (-9)(-9) = -81
B. (-12)(4) = 48
C. (31)(-10) = -310
D. (26)(3) = -78

Answers

Answer 1

Answer:

C. (31)(-10) = -310

Step-by-step explanation:

A. (-9)(-9) = -81

negative times a negative is a positive  incorrect sign

B. (-12)(4) = 48

negative times a positive is a negative incorrect sign

C. (31)(-10) = -310

positive times a negative is a negative correct sign

D. (26)(3) = -78

positive times a positive is a positive  incorrect sign

Answer 2

Answer:

C. (31)(-10) = -310

Step-by-step explanation:

This equation has the correct sign, because multiplying a positive number and negative number gives you a negative number.

The other answer choices have the wrong signs.

Multiplying 2 negatives together gives a positive, so A is wrong.

Multiplying a negative by a positive gives a negative, so B is wrong as well.

D is wrong because multiplying 2 positive numbers gives a positive number.

So, C is correct.

Related Questions

Allison bought three pounds of strawberries for $19.20. What is the price, in dollars per ounce of strawberries?
1 pound = 16 ounces
Before you try that problem, answer the question below.
How many ounces of strawberries did Allison buy?

Answers

Answer:

40 cents per ounce

Step-by-step explanation:

Allison bought 48 ounces of strawberries. $6.40 per pound of strawberries. (hope this helps.)

Two bicyclists started racing towards each other when they were 98 miles apart. Three hours later they did not yet meet and the distance between them was 2 miles. How fast each of them biked if the speed of one of them was 3 mph slower than the others?

Answers

83 mh i think but im not sure

Please help with my question.

Answers

Answer:

none........ i think...

It should be A but I’m not 100 percent sure

Which expression is equivalent to 24 ⋅ 2−7?

1 over 2 to the power 11
1 over 2 to the power 3
23
211

Answers

Answer:

211

Step-by-step explanation:

The answer is 211 . Hope that helps:)

Chelsey is repairing her iPad and needs to tighten a screw that holds the battery in. She tried a 3/4 mm screwdriver, which was too large, and a 1/2 mm screwdriver, which was too small. Which of the following screwdrivers might fit the screw?

Answers

Answer:ask Siri

Step-by-step explanation:

But it is 8mm

8 idkjjbsjcbjsjbsfkiihekii

A board game that normally cost 30 bucks is on sale for 25% off. What is the sale price of the game?

Answers

Answer:

$22.50 Hope this helps

Step-by-step explanation:

22.50 I had this question in a test

can i get help right answer gets brainlyest

Answers

Answer:  The slope is 6.

Step-by-step explanation:

One way to see the slope is to look at the graph and find places where the graphed line crosses the corners formed by the grid lines. Then count the number from top to bottom and divide that number by the number of blocks left to right  (IF the scale is the same for both the x-axis and y-axis!) Then divide up-down number by left-right number. If it is the same, the slope is 1.

Here the line crosses the y axis at -1 exactly: (0, -1) The next place where it crosses the corner exactly is at (1, 5). Counting blocks:  6 from top to bottom, only 1 left to right  6/1

Or do it with the numbers: Find the difference in y-values, them divide by the difference in x-values, Using Coordinates (0,-1) and (1,5)  the difference in y-values is 5-(-1) = 5+1 = 6 The difference in x-values is 1 - 0 = 1   6÷1 = 6

pease answer I need the answer
Did you know that chickens sometimes eat vegetables and fruits? A farmer likes to give the chickens apples to share. The farmer observes that 3 chickens eat 5 apples. What is the ratio of the number of chickens to apples? (4 points) Group of answer choices
2:5
5:3
5:2
3:5
For a beverage, Lisa mixes cups of lemonade to cups of iced tea in a ratio of 3:7. Which of the following best describes the amount of lemonade to iced tea? (4 points)

1. For every 3 cups of lemonade, there are 7 cups of iced tea.

2.For every 3 cups of lemonade, there are 4 cups of iced tea.

3. For every 7 cups of lemonade, there are 4 cups of iced tea.
For every 7 cups of lemonade, there are 3 cups of iced tea
On a farm, the farmer decides to give pizza to her 18 ducks as a special treat. She orders 3 pizzas, and the total price is $26.28. What is the unit price of each pizza? (4 points)
$4.38
$78.84
$23.28
$8.76
a biker traveled 24 miles in 6 hours. A unit rate to describe this would be 4 miles per hour. What is another unit rate in this situation? (4 points)
1 over 4 hour per mile
4 hours per mile
1 mile per hour
1 over 4 mile per hour
Store ___ has the better deal. (4 points)
A man drove his car a distance of 315 miles in 5 hours. If continuing at this rate is possible, he will travel ____ miles in 9 hours. (5 points)
Part A: Use ratio language to describe the relationship of any two things you can think of.
Example: For every 5 minutes of jogging, I ran 500 yards.
Be creative and come up with your own idea.
Part B: Determine the unit rate in your example. (5 points)

Answers

Answer

1. is B

2. i think is number 1

Step-by-step explanation:

Answer:

3:5 for the first answer

Step-by-step explanation:

It says what is the ratio of chickens to apples so chicken comes first and then apples

18.35-(-4)^3 (13.62-8.69)/32-4.08

Answers

The answer to this question (18.35-(-4)^3 (13.62-8.69)/32-4.08) is 24.13
the answer to this is 24.13

Sarah made baskets on some of her shots in a basketball game see shot 18 times and made 12 baskets if she continues to make baskets at the same rate how many baskets would she make if she shot 24 times

Answers

Answer:288

Step-by-step explanation:

She would make 18 baskets

Please answer this asap.

Answers

The answer would be 39.78

Answer:

39.78

Step-by-step explanation:

Please help me please

Answers

Answer:

6 days

Step-by-step explanation:

Answer: 13

Step-by-step explanation:

for me it is easiest to make circles and fill in the numbered circles on which days are the chosen days

ex:

Neighbor 1:  1 circle, 2 circle, 3 circle, and 4 circle: fill it in

Neighbor 2: 1 circle, 2 circle, 3 circle: fill it in

Divide.

5/6÷ −2/3


−5/4

​−5/9​

5/9

​5/4​

Answers

Answer:

-5/4

Step-by-step explanation:

Answer:

-5/9

Step-by-step explanation:

5/6(−2/3)

Cancel the common factor of 2.

5/3⋅−1/3

Multiply 5/3 and −1/3.

5⋅−1/3⋅3

Simplify the expression.

−5/9

The result can be shown in multiple forms.

Exact Form:

−5/9

Decimal Form:

−0.¯5

Hope this helps! :) Plz mark as brainliest

Marlene decided to buy 2 bags of apples weighing 3
1
4
pounds each, instead of 3 bags weighing 2
2
5
pounds each. Did she end up with more apples or fewer apples by buying the bigger bags?

To find the total weight of 2 bags of apples weighing 3
1
4
pounds, multiply.
2 × 3
1
4
=

To find the total weight of 3 bags weighing 2
2
5
pounds, multiply.
3 × 2
2
5
=

She ended up purchasing apples by buying the bigger bags.

My iPad is about to die please hurry-

Answers

Answer:

3 bags of 225 pounds has more apples

Step-by-step explanation:

2*314=628

3*225=675

675>628

3 bags of 225 pounds has more apples

3 bags of 225 pounds has more apples

Jayden bought 3.126 pounds of gummy bears. If he ate 1.4 pounds, how many does he have left?

Answers

3.126 - 1.4 = 1.726

Hope this helps! :D

1.726 sorry if im incorrect :(

HURRY!!! DUE TODAY!!!

Answers

Answer:

y= -1/4x+2

Step-by-step explanation:

Trust me on this one I am 100%

Lino answer is 100% correct

BRAINLIST and points help

Answers

Answer:

B=2

Step-by-step explanation:

b= 2
hope this helped

Please help me solve this

Answers

Answer:

24

Step-by-step explanation:

4x + 6 = 102

-6. -6

4x= 96

x=24

Sum of all angles of triangle=180°

So, 102 + 4x + 6 + x = 180

or 5x + 108 = 180

or 5x = 180 - 108

or 5x = 72

or x = 72/5

or x = 14.5

So, x = 14.5°

I need help if you can help me

Answers

Answer:

8.74891

Step-by-step explanation:

Pls answer 2 algebra 1 questions for 25 points tank u.

Answers

-45<48

-6>2

I GOT IT RIGHT ON THE TEST

Can someone help me with these

Answers

Sorry but I don’t think I can help you with this

i need to find the inequality and make an equation to graph out of this : Carlos and Clarita want to sell T-shirts with dogs and cats on them. They’ve found two local t-shirt companies. Shirts R Us will charge them a one-time set up fee of $20 and $15/t-shirt. The second company, Tee4U, has a $50 set up fee and charges $12/t-shirt.

Answers

(I mean no need to waste points)

Answer:

Shirts R Us: 15t+20; Tee4U: 12t+50

If you're making a graph, shirts r us will start at (0,20) and will increase by 1 across and 15 up. tee4u will start at (0,50) and increase by 1 across and 12 up.

Adam can eat 3/8 of a pizza in 1/16 of a minute complete the unit rate by setting up a complex fraction and simplifying Answers A) 1 pizza per minute B) 3 Pizza per minute C) 6 Pizza per minute D) 9 Pizza per minute Answer correctly and i will give away a giftcard

Answers

Answer:

B

Step-by-step explanation:

Answer: C) 6 pizza per minute

Step-by-step explanation:

3/8 times 16 = 6

Colin is painting figurines. He spends 20 minutes painting each figurine. After painting for 60 minutes, he still has 9 more figurines left to paint.
The number f of figurines left to paint is a function of t, the amount of time in minutes Colin spends painting.
f=________

Answers

Answer: f=180, because you multiply 9 and 20 to find out how many minutes it takes

F=180 I think is the correct answer

Help please!!!!!!! and thank you

Answers

Answer:

2.50000 or 2.5 or 2 1/2

Step-by-step explanation:

You have the number 250,000. you have to get the decimal between 1.00 and 10.00 to do this we are going to move the decimal over left one at a time.

25,000.0

2,500.00

250.000

25.0000                     25 is really close but not between 1 and 10 so were going to move the decimal one more time

2.50000

2.50000 is between 1 and 10 so its the anwser we are looking for.

Answer:

2,500

Step-by-step explanation:

brainliest me pls

Isabelle takes the bus to work. The bus ride to work costs her $2.50 each time. She could buy a bus pass for a one-time fee of $15.00 and would then only pay $1.00 each time to ride the bus. How many times would she have to take the bus for the cost to be the same?

Answers

y = total cost

x = amount of times she takes the bus

Let's create two equations to model the data in the problem above.

y = $2.50x

y = $1x + $15

Now, let's set them equal to each other and solve for x.

$2.50x = $1x + $15

Subtract $1x from both sides.

$1.50x = $15

Divide both sides by $1.50

x = 10

She would have to ride the bus 10 times for the cost to be equal.

Answer:

10 Trips

Step-by-step explanation:

Create 2 algebraic Equations, X is the number of trips and y is the total cost. y=2.5x, and y=x+15. Set them equal to eachother and solve for X.  2.5X=X+15. Subtract X from both sides to get 1.5X=15. Divide by 1.5 to get 10.  X=10, 10 Trips!

What is the prime factorization of 50?

2 times 25
2 times 5
2 times 5 squared
2 squared times 5

Answers

Answer:

2x5x5/c

Step-by-step explanation:

2x5=10x5=50 btw i know bc i am in the future

Answer: 2 times 5 squared / C.

0.9 x 10^-1 standard notation

Answers

Answer:

0.09

Step-by-step explanation:

The standard notation of number is,

⇒ 0.09

We have to given that,

Scientific notation of number is,

⇒ 0.9 × 10⁻¹

Now, We can simplify as,

⇒ 0.9 × 10⁻¹

⇒ 0.9 × 1/10

⇒ 0.9 / 10

⇒ 0.09

Therefore, The standard notation is,

⇒ 0.09

Learn more about the scientific notation visit:

brainly.com/question/1767229

#SPJ6

The price of one share of a stock fell $4 each day for 8 days. By how much did the value of the stock change in the time period?

A. $32
B. $24
C. -$24
D. -$32

Answers

Answer:

D. -$32

Step-by-step explanation:

Multiply 4 by 8. If the stock went down, it would be -$32.

D (-32)

$4 multiplied by 8 days (4x8) would be $32, and since the stock is falling it would be -32

Proportional or not?

Answers

Answer:

proportional

Step-by-step explanation:

A proportional graph is a straight line that always goes through the origin. A non-proportional graph is a straight line that does not go through the origin.

it is proportional because it is 4/-1
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