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
puteri [66]
3 years ago
11

Which of these is positive values and which have negative values

Mathematics
1 answer:
USPshnik [31]3 years ago
5 0

Answer:

Positive: 7-(-4) and -10+12

Negative -3+(-2) and 5-8

Step-by-step explanation:

Addition and subtraction rules

You might be interested in
10 of 10
Fed [463]

Let the height of the rectangle = h

2b + 2h = 100

2(38) + 2h = 100

2h = 100 - 76

h = 12mm

area of rectangle = base x height

= 38 x 12

= 456mm²

4 0
3 years ago
Read 2 more answers
we believe that 42% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to
Maksim231197 [3]

Answer:

A sample of 1077 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

42% of freshmen do not visit their counselors regularly.

This means that \pi = 0.42

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

How large of a sample size is required?

A sample size of n is required, and n is found when M = 0.035. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.035 = 2.327\sqrt{\frac{0.42*0.58}{n}}

0.035\sqrt{n} = 2.327\sqrt{0.42*0.58}

\sqrt{n} = \frac{2.327\sqrt{0.42*0.58}}{0.035}

(\sqrt{n})^2 = (\frac{2.327\sqrt{0.42*0.58}}{0.035})^2

n = 1076.8

Rounding up:

A sample of 1077 is required.

3 0
3 years ago
WHICH RATIO SHOW PORTION FORM WITH 25/28 BY WRITING IN LOWEST FORM
miss Akunina [59]
25/28

is in it's lowest form, as it cannot be reduced anymore.

25/28 = 0.8928571

hope this helps
8 0
3 years ago
Help me pls.
salantis [7]

Answer:

1. 424

2.471

3.512

Step-by-step explanation:

1. 10×12+8×10+8×13+8×15

=120+80+104+120

=424

2. 5×24+9×24+9×15+9×15

=120+216+135

=471

3. 24×16+2×24+2×20+2×20

=384+48+40+40

=512

3 0
3 years ago
^5 square root x^4 times ^5 square root x^4
Alla [95]

Answer:

Do 5x5 4 times

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Simplify the expression. Write your answer as a power. 5^8 x 5^5/5^4 x 5^3
    14·1 answer
  • The cost CC (in dollars) for the care and maintenance of a horse and carriage is C=15x+2000C=15x+2000, where xx is the number of
    15·1 answer
  • I did it but it didn't have my answer on the list lol
    5·1 answer
  • Matttttttttttttttttthhhhhhhhhh , HELLPPP !
    7·2 answers
  • The diagram is a straightedge and compass construction. A is the center of one circle, and B is the center of the
    11·1 answer
  • Complete the square to transform the quadratic equation into the form (x – p)2 = q.
    7·1 answer
  • Find the exact solution to the equation. (2 points) five to the power of quantity nine minus three x equals one hundred and twen
    15·1 answer
  • What shape is this cross-section?
    11·2 answers
  • Pt=3x+8and TQ =5x-6 PT=?
    7·1 answer
  • How many combinations of powerball numbers are there
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!