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
ra1l [238]
3 years ago
11

The value of (-7) 2 is negative. True or false? Please help me!!!! :'(

Mathematics
2 answers:
Elza [17]3 years ago
8 0

Answer:

It is false

Step-by-step explanation:

It is false because if you have two groups of negatives, it is positive. (-7)^2 is the same as -7x-7. Two negatives equal a positive, so the answer should be 49. 49 is positive so it is false.

Katarina [22]3 years ago
5 0

Answer:false

Step-by-step explanation:

(-7)^2

(-7)*(-7)

49

49 is a positive number

You might be interested in
What integer is equivalent to 25 3/2
bonufazy [111]
<span>26.5 the way it is written but it could be asking for multiplication?</span>
4 0
3 years ago
garfield 3/4 of cat food each day. Another cat named kitty eats 1/2 of can of cat food each day. Cat food cost $5.00 at Costco f
ASHA 777 [7]

What answer do you want me to solve for?

4 0
4 years ago
1. How many variables are involved in the chi-square test?
GarryVolchara [31]

The result of the respective questions are:

  • This chi-square test only takes into consideration one variable.
  • The  type of chi-square test this is is a Goodness of Fit
  • df= 3
  • NO

<h3>How many variables are involved in the chi-square test?</h3>

a)

This chi-square test only takes into consideration one variable.

b)

The  type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

c)

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

d)

In conclusion

Parameters

\alpha = 0.05

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.

Read more about Probability

brainly.com/question/11234923

#SPJ1

3 0
2 years ago
The average daily rainfall for the past week in the town of Hope Cove is normally distributed, with a mean rainfall of 2.1 inche
natita [175]

Answer:

D

Step-by-step explanation:

We calculate the z-score for each

Mathematically;

z-score = (x-mean)/SD

z1 = (1.9-2.1)/0.2 = -1

z2 = (2.3-2.1)/0.2 = 1

So the proportion we want to calculate is;

P(-1<x<1)

We use the standard score table for this ;

P(-1<x<1) = P(x<1) -P(x<-1) = 0.68269 which is approximately 68%

6 0
3 years ago
John's grade increased from a 77 to an 85. What is the approximate percent increase of John's grade
pentagon [3]

Answer:

10.4  hope this help  ;)  77 x 10.4

Step-by-step explanation

turn the 10.4 into .10 then multiply like this

77 x .10 =7.7

77+ 7.7 = 84.7

7 0
3 years ago
Read 2 more answers
Other questions:
  • For f(x)=4x+1 and g(x) = x2-5, find (f+g)(x)<br> A. x2+4x-4 B. x2+4x+6 C. 4x2-19 D. 4x3-4
    15·1 answer
  • Marvin is buying a watch from his brother
    13·1 answer
  • How do you solve this problem?
    5·2 answers
  • eric can spend a maximum of $270 on office supplies. Each rem of paper costs $6. Each ink catridge costs $18. Which of the follo
    12·1 answer
  • What is the answer to 54x^2-144x
    10·2 answers
  • Tara standing 20 feet from a tree and the angle of elevation is 72°. About how tall is the tree?
    12·1 answer
  • Please help due soon
    12·2 answers
  • 2. The value of (-1) 'is:<br>(i) 0 (ii) -1 (iii) 1 (iv) None of these​
    9·1 answer
  • When copying segments and angles, which step is the same?
    11·1 answer
  • You are going on vacation. You have $105 to take with you. You expect to spend $15 each day. You want to have $30 remaining at t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!