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
Ahat [919]
3 years ago
8

Hello, I need help with this! also could you please explain how you did it, thank you! :)

Mathematics
2 answers:
Setler [38]3 years ago
6 0

Answer:

-7

Step-by-step explanation:

stira [4]3 years ago
4 0

Answer:

-7

Step-by-step explanation:

-2(4 - 5 ) - 1(2 - 5)^2

-2(-1) - 1(-3)^2

2 - 1(9)

2 - 9

-7

Hope this helps. Pls give brainliest.

You might be interested in
The proportion of a population with a characteristic of interest is p = 0.37. What is the standard deviation of the sampling dis
lukranit [14]

The standard deviation (SD) of a sample proportion obtained when the sample size is 1,600 is equal to 0.0121.

<h3>What is a sample proportion?</h3>

A sample proportion can be defined as the proportion of individuals in a sample that have a specified characteristic or trait.

Mathematically, sample proportion can be calculated by using this formula:

\hat{p} = \frac{x}{n}

Where:

  • x represent the number of individuals with a specified characteristic.
  • n represent the total number of individuals in a sample.

In Mathematics, the standard deviation (SD) of a sample proportion obtained when the sample size is 1,600 can be calculated by using this formula:

Standard deviation (SD) = √(p(1 - p)/n)

Substituting the given parameters into the formula, we have;

Standard deviation (SD) = √(0.37(1 - 0.37)/1,600)

Standard deviation (SD) = √(0.37(0.63)/1,600)

Standard deviation (SD) = √(0.2331)/1,600)

Standard deviation (SD) = √0.0001457

Standard deviation (SD) = 0.0121.

Read more on standard deviation here: brainly.com/question/14467769

#SPJ1

8 0
1 year ago
Joel has a goal to practice his clarinet for 4 1/2 hours per week. The list below shows the number of hours Joel has practiced s
garri49 [273]

Answer: 3/4 hour

Step-by-step explanation: Add them all to get 3 3/4. subtract that from 4 1/2.

4 0
2 years ago
Read 2 more answers
Which equation could represent the relationship shown in the scatter plot? y=−3x−2
Orlov [11]

Answer:

Y=-3/4x + 10

Step-by-step explanation:


3 0
4 years ago
Read 2 more answers
Scientists have found a relationship between the temperature and the height above a distant planet's surface. , given below, is
Liula [17]

Answer:

1) Option B is correct.

The inverse of the function, T⁻¹(x), represents the The height above the surface (in kilometers) when the temperature is x degrees Celsius.

2) T⁻¹(x) = 12.2 - 0.4x

3) T⁻¹(15) = 6.2 m

Step-by-step explanation:

1) The inverse of a function is a function that reverses the effects of the original function on the variable that determines the original function's value.

T(h) = 30.5 - 2.5h

The original function takes the height in kilometres and converts it to temperature at that point in degree Celsius, So, the inverse function will take the temperature in degree Celsius and produce the corresponding height in kilometres.

So, it is the The height above the surface (in kilometers) when the temperature is x degrees Celsius.

The inverse functuon is given as T⁻¹ (x)

2) To obtain T⁻¹(x)

T(h) = 30.5 - 2.5h

We make h the subject of formula

2.5h = 30.5 - T

h = (30.5 - T)/2.5

h = 12.2 - 0.4T

T⁻¹(x) = 12.2 - 0.4x

3) T⁻¹(x) = 12.2 - 0.4x

when x = 15°C

T⁻¹(15) = 12.2 - 0.4(15) = 6.2 m

6 0
4 years ago
Which is the equation of a line that has a slope of 4 and passes through point (1, 6)?
Bumek [7]
Y - 6 = 4(x - 1)
y - 6 = 4x - 4
y = 4x + 2

answer
<span>c.y = 4x + 2</span>
4 0
4 years ago
Read 2 more answers
Other questions:
  • WHEN SUBTRACTING 9.3 FROM A CERTAIN NUMBER THE RESULT IS 68.91 AS SEEN BELOW. WHAT NUMBER SHOULD GO IN THE BOX TO COMPLETE THE S
    10·1 answer
  • PLEASE HELP ME ON THIS DO NOT WASTE ANSWERS URGENT
    12·2 answers
  • Please help thx with steps
    12·2 answers
  • the surface area of a prism is 54 square inches.What is the surface area of a similar prism that has dimensions that are 1/3 the
    9·1 answer
  • Help plss (find the perimeter) thx
    11·1 answer
  • NEED HELP ASAP FAIRLY EASY
    6·1 answer
  • Write 2 1/2 miles in 3/4 hour as a unit rate
    13·1 answer
  • Help??<br> anyone?<br> 7th grade math <br> tysm
    14·1 answer
  • Which choice shows three length that cannot be the lengths of the three sides of a triangle?
    10·1 answer
  • A positive integer is 4 less than another. If 3 times the reciprocal of the smaller integer is subtracted from the reciprocal of
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!