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
Crazy boy [7]
3 years ago
9

M-(10)=-20

Mathematics
1 answer:
Zina [86]3 years ago
6 0
The answer is -10. I think about negative numbers on a number line with numbers being behind and in front of the zero. To check the answer you can imagine being on -10 and when it says to minus a number you always know that it’s going to go further into the negative. So -10-10 is -20.
You might be interested in
Help please! I do not exactly understand how to do this. Thanks!
Radda [10]

X and Y are supplementary, that means X + Y = 180.

But we have, X  = Y +24, then

X + Y = Y + 24 + Y = 2Y + 24 = 180

Then

2Y = 156

Y = 78

Then X = 78 + 24 = 102.

6 0
3 years ago
Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take
Ipatiy [6.2K]

Answer:

a) r = 0.974

b) Critical value = 0.602

Step-by-step explanation:

Given - Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both test and the results are give below

Test A | 64 48 51 59 60 43 41 42 35 50 45

Test B |  91 68 80 92 91 67 65 67 56 78 71

To find - (a) What is the value of the linear coefficient r ?

             (b) Assuming a 0.05 level of significance, what is the critical value ?

Proof -

A)

r = 0.974

B)

Critical Values for the Correlation Coefficient

n       alpha = .05          alpha = .01

4           0.95                       0.99

5           0.878                     0.959

6           0.811                       0.917

7           0.754                      0.875

8           0.707                      0.834

9           0.666                      0.798

10          0.632                      0.765

11           0.602                      0.735

12          0.576                       0.708

13          0.553                       0.684

14           0.532                       0.661

So,

Critical r = 0.602 for n = 11 and alpha = 0.05

6 0
3 years ago
Please solve. 6(3 + 8) - 4/5
Gre4nikov [31]

G'Day mate! Here's the answer:

53 1/3

1. 6(3 + 6) - 4/5

2. 6 x 3 is 18, and 6 x 8 is 48

3. 18 plus 48 is 66

4. 66 - 4/5 = 266/5

5. 266/5 as mixed number is 53 1/5

3 0
3 years ago
Read 2 more answers
Sports drinks- $1.75<br> pizza- $2.25
sineoko [7]

Answer:

7 drinks

Step-by-step explanation:

7x1.75=12.25

4 x 2.25= 9

added - 21.25

3 0
3 years ago
The formula that relates the length of a ladder, L, that leans against a wall with distance d from the base of the wall and the
Tomtit [17]
The answer would be 14.586 feet, or rounded up to 14.6 feet.
6 0
3 years ago
Read 2 more answers
Other questions:
  • 22. f(x) is stretched horizontally by a factor of 2 and reflected across the x-axis. Which choice shows the correct representati
    10·1 answer
  • Joe has some pocket money. He spends 90% of it. He has fifty pence left. How much pocket money did he have?
    10·1 answer
  • Consider the system of differential equations dxdt=−4ydydt=−4x. Convert this system to a second order differential equation in y
    14·1 answer
  • You are trying to catch a train, which will be leaving in 2 minutes. There are 2 kilometers between you and the train station. I
    6·1 answer
  • Find the constant of proportionality k. Then write an equation for the relationship between x and y
    9·1 answer
  • Note: make x the subject​
    8·1 answer
  • McKenna earns $12 per hour mowing her grandmother yard.
    15·1 answer
  • Consider the line y=3/4x-7 what perpendicular, 6,3
    12·1 answer
  • 2,711,783 in expanded form​
    15·1 answer
  • 4 divided by 3678 pls help
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!