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
Sever21 [200]
3 years ago
7

Please help mee

- 3)" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
FinnZ [79.3K]3 years ago
4 0

Answer:

10

Step-by-step explanation:

7-(-3)=7+3=10

You might be interested in
Using the rule y=4x-1, find the value of y when x is 5
Kazeer [188]

y=19!! hope this helps :)

3 0
3 years ago
Read 2 more answers
Solve -3(x+4) = 7x + 4
Nataliya [291]

Answer:

x = -8/5

Step-by-step explanation:

-3(x+4) -> -3x-12

-3x-12=7x+4

-7x

-10x-12=4

           +12

-10x=16

16/-10 = -8/5

-8/5 = x

7 0
2 years ago
Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule
Yuri [45]

Answer:

(a) 68% of people has an IQ score between 87 and 113​.

(b) 5% of people has an IQ score less than 74 or greater than 126.

(c) 0.15% of people has an IQ score greater than 139​.

Step-by-step explanation:

Given information:Scores of an IQ test have a​ bell-shaped distribution,

mean = 100

standard deviation = 13

According to the empirical rule

68% data lies between \overline{x}-\sigma and \overline{x}+\sigma.

95% data lies between \overline{x}-2\sigma and \overline{x}+2\sigma.

99.7% data lies between \overline{x}-3\sigma and \overline{x}+3\sigma.

(a)

\overline{x}-\sigma=100-13=87

\overline{x}+\sigma=100+13=113

[\overline{x}-\sigma,\overline{x}+\sigma]=[87,113]

Using empirical rule we can say that 68% of people has an IQ score between 87 and 113​.

(b)

\overline{x}-2\sigma=100-2(13)=74

\overline{x}+2\sigma=100+2(13)=126

[\overline{x}-2\sigma,\overline{x}+2\sigma]=[74,126]

Using empirical rule we can say that 95% of people has an IQ score between 74 and 126​.

The percentage of people has an IQ score less than 74 or greater than 126 is

P = 1- percent of people has an IQ score between 74 and 126​.

P = 1- 95%

P = 5%

Therefore 5% of people has an IQ score less than 74 or greater than 126.

(c)

\overline{x}-3\sigma=100-3(13)=61

\overline{x}+3\sigma=100+3(13)=139

[\overline{x}-3\sigma,\overline{x}+3\sigma]=[61,139]

Using empirical rule we can say that 99.7% of people has an IQ score between 61 and 139​.

The percentage of people has an IQ score less than 61 or greater than 139 is

P = 1- percent of people has an IQ score between 61 and 139​.

P = 1- 99.7%

P = 0.3%

The percentage of people has an IQ score greater than 139​ is

P=\frac{1}{2}(0.3\%)=0.15\%

Therefore 0.15% of people has an IQ score greater than 139​.

5 0
3 years ago
Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $
nikklg [1K]

The system of linear equations represents the situation is;

x + y = 125

x + y = 1255x + 8y = 775

<h3>Simultaneous equation</h3>

Simultaneous equation is an equation in two unknown values are being solved for at the same time.

let

  • number of quick washes = x
  • number of premium washes = y

x + y = 125

5x + 8y = 775

From equation (1)

x = 125 - y

5x + 8y = 775

5(125 - y) + 8y = 775

625 - 5y + 8y = 775

- 5y + 8y = 775 - 625

3y = 150

y = 150/3

y = 50

  • Substitute y = 50 into

x + y = 125

x + 50 = 125

x = 125 - 50

x = 75

Therefore, the number of quick washes and premium washes Monica’s school band had is 75 and 50 respectively.

Learn more about simultaneous equation:

brainly.com/question/16863577

#SPJ1

3 0
1 year ago
What are the leading coefficient and degree of the polynomial?
MissTica

Answer:

  • leading coefficient: 2
  • degree: 7

Step-by-step explanation:

The degree of a term with one variable is the exponent of the variable. The degrees of the terms (in the same order) are ...

  6, 0, 7, 1

The highest-degree term is 2x^7. Its coefficient is the "leading" coefficient, because it appears first when the polynomial terms are written in decreasing order of their degree:

  2x^7 -7x^6 -18x -4

The leading coefficient is 2; the degree is 7.

__

<em>Additional comment</em>

When a term has more than one variable, its degree is the sum of the exponents of the variables. The term xy, for example, is degree 2.

4 0
2 years ago
Other questions:
  • How to simplify 7- (-3)
    11·1 answer
  • The diameter of a circle is 18 centimeters. what is the radius? d=18 cm give the exact answer in simplest form.
    13·1 answer
  • an internet service provider charges a one time $25 connection fee and then charges $16 per month. write an expression to model
    6·1 answer
  • In the local coed softball league the male to female ratio is 6:6 if there are a 160 players in the league how many are female
    11·1 answer
  • Solve the linear equation.
    15·2 answers
  • I'm having trouble making 1 8/9 as a decimal. help?
    10·2 answers
  • Here's the data (sorted) of the ages of 91 women who won the Oscar for Best Actress in a Leading Role:
    11·1 answer
  • Enter the number in scientific notation.<br> 4,470,000 =
    5·2 answers
  • Question #1. factor completely p^4-13p^2+40
    8·1 answer
  • Please please help me rn it do in few mins
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!