1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alchen [17]
2 years ago
5

Which number sentence shows that the sum of a number and its opposite is 0?

Mathematics
2 answers:
DIA [1.3K]2 years ago
5 0

Answer:

C. -5+6>0

Step-by-step explanation:

that's the only ture statement

Kazeer [188]2 years ago
3 0

Answer:

A. −4 + 4 = 0

Step-by-step explanation:

-4 + 4 = 0

4 - 4 = 0

So option A will be the answer

You might be interested in
The course for a boat race starts at point A and proceeds in the direction of S52'E for 1 hour at 8 knots to point B and then in
KATRIN_1 [288]

Answer:

20.823 nautical miles

S20°E

Step-by-step explanation:

I assume you mean ° (degrees), not ' (minutes).  There are 60 minutes in 1 degree.

S52°E means "south, 52° east", or 52° east of south.

S50°W means "south, 50° west", or 50° west of south.

1 knots = 1 nautical mile / hour, so the boat first travels 8 nautical miles from A to B, then 4.5 nautical miles from B to C, then finally back to A.

If we say A is at the origin, then the coordinates of B are:

(8 sin 52°, -8 cos 52°)

And the coordinates of C are:

(8 sin 52° − 4.5 sin 50°, -8 cos 52° − 4.5 cos 50°)

(2.857, -7.818)

So the distance from A to C is:

x = √(2.857² + (-7.818)²)

x ≈ 8.323

And the total distance of the race is:

d = 8 + 4.5 + 8.323

d = 20.823

The compass bearing from A to C is:

θ = atan(2.857 / 7.818)

θ ≈ S20°E

8 0
3 years ago
Please help, will grant brainliest if correct, need now!!
Mama L [17]

Answer:

- 7

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

\frac{f(b)-f(a)}{b-a}

Here [ a, b ] = [ - 5, - 2 ]

f(b) = f(- 2) = (- 2)² - 4 = 4 - 4 = 0

f(a) = f(- 5) = (- 5)² - 4 = 25 - 4 = 21, thus

average rate of change = \frac{0-21}{-2-(-5)} = \frac{-21}{3} = - 7

3 0
3 years ago
To determine whether the means of two populations are equal,
worty [1.4K]

Answer:

The correct option is C. either a t test or an analysis of variance can be performed.

Step-by-step explanation:

Consider the provided information.

  • The t-test, is used for whether the means of two groups are equal or not. The assumption for the test is that both groups are sampled from normal distributions with equal variances.
  • Analysis of Variance (ANOVA) is a statistical method evaluating variations between two or more methods. ANOVA is used in a study to analyze the gaps between group methods.
  • ANOVA is used not for specific differences between means, but for general testing.
  • The chi-squared test is often used to evaluate whether there was a significant difference in one or more groups between the predicted frequencies and the observed frequencies.

Hence, Either a t test or an analysis of variance can be performed to determine whether the means of two population are equal.

Therefore, the correct option is C. either a t test or an analysis of variance can be performed.

4 0
3 years ago
How to solve Q 8,9,and 10.
iVinArrow [24]

Answer:

bbbbbbbbbbbbbbbbbbbbbbbbbb

Step-by-step explanation:

8 0
3 years ago
Mark bought two candy bars and a soda for $3.96. If each candy bar cost $1.10 how much did the soda cost?
stiv31 [10]

Answer:

$1.76

Step-by-step explanation:

$1.10+$1.10 = $2.2

$3.96 - $2.2 = $1.76

6 0
2 years ago
Other questions:
  • What is the volume of a rectangular prism whose edges measure 3 ft, 3 ft, and 2 ft?
    5·1 answer
  • Which is bigger 40% of 200 or 1/3 of 150
    11·1 answer
  • Find the measure of x. (to the nearest tenth)
    9·1 answer
  • Use the product property for radicals to simplify the following radical expressions as much as possible. Square root of 54
    8·1 answer
  • 19. Find the perimeter of a triangle if the side lengths are 3 1/2 ft, 5 2/3 ft,<br> and 4 1/6 ft.
    13·1 answer
  • NEED HELP ASAP PLZZZZZZZZZZZZZZZ
    11·1 answer
  • The museum of natural history has an auditorium that can seat 200 people. A class of 45 students is seated in the auditorium for
    15·1 answer
  • Twelve people in a group are left-handed.
    14·1 answer
  • Ben made 1/4 bath of brownies in five minutes. How many minutes did it take to make 1 batch of brownies?
    7·2 answers
  • Determine whether ΔA B C ≅ ΔX Y Z . Explain. A(3,-1), B(3,7), C(7,7), X(-7,0), Y(-7,4), Z(1,4)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!