Katie said, '' negative numbers are integers.'' what was her error?

Answers

Answer 1

Answer:

An integer is defined as whole number, or a number that is not a fraction. Any whole number that is negative or positive can be an integer. Technically, not all negative numbers are integers. If the number is not a whole number, it is not considered an integer. For example, -2.5 is not an integer.

Answer 2

Answer: Her error was that an integer is not just negative numbers, integers are whole numbers that are not fractions, which mean it could be positive or negative whole numbers.

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Laura and Brent paddled a canoe 6 miles upstream in four hours. The return trip took three hours. Find the rate at which Laura and Brent paddled the canoe is still water.

Answers

Call the rate in still water vs;
upstream you have: vs-v=6/4
downstram you have: vs+v=6/3
where v is the rate with which the river flows.
rearranging:
vs-v=3/2
vs+v=2
from the second you have v=2-vs substitute into the first:
vs-2+vs=3/2
2vs=7/2
vs=7 mi/hr

Nadia surveyed 80 students at her school and found that 0.55 of the students she surveyed said their favorite class is math. Another 15% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?A. 12
B. 32
C. 44
D. 48

Answers

Nadia surveyed 80 students at her school and found the following results:
=> 0.55 of the students she surveyed said their favorite class is math.
=> 15% of the students she surveyed reported that their favorite class is science.
Let's find out many more students in the survey prefer math over science?
MATH
=> 80 students * 0.55 = 44 students love math.
SCIENCE
=> 80 * .15 = 12 students love science
=> 44 - 12 = 32 students

B. 32

It would be Choice "B"

The grocer bought 154 pounds of beef at $5.00 per pound. The grocer also bought 243 pounds of ground turkey for $729. How much more was the cost of the beef per pound than the turkey?

Answers

5•154=770(beef)

243•x=729
243x=729
729/243=3
x=3

5-3=2

the beef was two dollars more than the turkey per pound

Yes her answer is correct.

One and a half x + 3/4 x equals 5/8

Answers

1 and 1/2x+3/4x=5/8
combine x's
1 and 1/2x=4/4x+2/4x=6/4x
6/4x+3/4x=5/8=9/4x
9/4x=5/8
multiply both sides by 8
18x=5
x=5/18

x=5/18 or aprox 0.277777777777

extend 4x on the RHS into a fraction with /4

What is the value of x?

4(6 + 7) = 4 • 6 + x • 7

x =

Answers

x=116
you do the equation to the left and then, you do the equation to the right and you subtract the answer from the right to left and there you get your answer

x=166
hope that helped and good luck on the rest of the math

How many small packages of sugar each having a mass of 10 1/4 grams can be made from a sack of sugar having a mass of 2460 grams

Answers

2460 grams ÷ 10 1/4 grams

2460 ÷ 41/4

= 2460 × 4/41 Use your calculator

= 240

So there would 240 small packages.

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Whole number for 80%

3.) Which numbers belong to the domain of the relation {(0, –4,) (–6, 2), (2, –1), (0, –6)}?Choose all answers that are correct.A.2B.0C.–4D.–64.)Which numbers belong to the range of the relation {(0, –1), (3, 6), (–2, –1), (–4, –4)}? Choose all answers that are correct. A.–4 B.–2 C.–1 D.05.)What is the range of the relation? Coordinate Grid A.{–3, –2, 0, 2} B.{–3, 3} C.{–4, –2, 1, 2} D.{–4, –3, –2, 1, 0, 2}