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Anarel [89]
3 years ago
5

-7 x -8 = 56 True or False

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0

Answer:

true negative ×negative =positive

yKpoI14uk [10]3 years ago
6 0

Answer:

True

Step-by-step explanation:

n= negative

p= positive

n*n=p

p*p=p

n*p=n

You might be interested in
Simplify the following expression 3^0
Gennadij [26K]

Answer:

1

Step-by-step explanation:

Any real number to the power of 0 is one (being that there is always a denominator of 1).

5 0
3 years ago
Okay so plz answer this question step by step,, thank you <br>​
Vikentia [17]

Given:

Total number of students = 20

The marks of the students are 40, 22, 36, 27, 30, 12, 15, 20, 25, 31, 34, 36, 39, 41, 43, 48, 46, 36, 37 and 40.

To find:

The frequency distribution table with class size 10.

Solution:

We have, the marks of 20 students.

40, 22, 36, 27, 30, 12, 15, 20, 25, 31, 34, 36, 39, 41, 43, 48, 46, 36, 37, 40

Here,

Minimum value = 12

Maximum value = 48

We nee class intervals of size 10. So, the required class intervals are 10-20, 20-30, 30-40, 40-50. In these intervals, lower limit is excluded but the upper limit included.

The required frequency distribution table is

Class intervals      Marks                                                  Frequency

10-20                    12, 15                                                            2

20-30                   22, 27, 20, 25                                             4

30-40                   36, 30, 31, 34, 36, 39, 36, 37                      8

40-50                   40, 41, 43, 48, 46, 40                                  6

Total                                                                                        20

Therefore, the frequency distribution table is

Class intervals:      10-20        20-30        30-40         40-50         Total

Frequency      :          2                4                8                6                20

8 0
2 years ago
What The probability is
lianna [129]
A) P( Jordan finishes before Jacobs)= 2/5 = 0.40
P( Jacobs finishes before Julia)   =  3/5 = 0.60
P(Jordan finishes before Jacobs AND before Julia) = 0.40 x 0.60 = 0.24

b)P( Jordan finishes before Jacobs)= 2/5 = 0.40 (already calculated


3 0
3 years ago
3k^2=11+6k : complete the square
WARRIOR [948]

Answer:

3(k - 1)² = 12

Step-by-step explanation:

To complete the square, write the equation standard form and make the a term's coefficient 1.

3k² = 11 + 6k

3k² - 6k - 11 = 0

3(k² - 2k) = 11

Take the middle term -2k and divide the coefficient in 2 and square it. Here it is -2/2 = -1. -1² = 1. Add 1 to both sides.

3(k² - 2k + 1) = 11 + 1

3(k - 1)² = 12

4 0
2 years ago
Can some one answer this plsss
svlad2 [7]

Answer:

D

Step-by-step explanation:

0.2x+5=8

0.2x=3

x=15

Therefore, the correct answer is choice D. Hope this helps!

4 0
3 years ago
Read 2 more answers
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