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vovangra [49]
2 years ago
11

All of the following are equivalent except _____.

Mathematics
2 answers:
Mamont248 [21]2 years ago
7 0
(-2) 4 is -8
-2(4) -8
(-2)(-2) is 4 (-2) is -8 (-2) is -16
2 4 is 8
if the question is referring to the only positive number it's D. If it's referring to the only different number it's -16
Musya8 [376]2 years ago
6 0

Answer:

a. -2 4

Step-by-step explanation:

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Help help help help hell
kari74 [83]

Answer:

51°

Step-by-step explanation:

angle2 is equal to 51 degrees

7 0
2 years ago
Read 2 more answers
What is the probability of selection for any man in a proportionate random sample, where a sample of 100 will be drawn from a po
kolbaska11 [484]
Working Principle: Stratified Random Sampling

nx = (Nx/N)*n

where:
    nx = sample size for stratum x
    Nx = population size for stratum x
    N = total population size 
    n = total sample size

Given:

  Nx = 100
  N = 1000
  n = 0.5*(1000) = 500

Required: Probability of Man to be selected

Solution:

nx = (Nx/N)*n
nx = (100/1000)*500 = 50 men

ny = (Nx/N)*n
ny = (100/1000)*500 = 50 women


Probability of Man to be selected = nx/(nx + ny)*100 = 50/(50+50)*100 = 50%

<em>ANSWER: 50%</em>
7 0
3 years ago
can you help me evaluate this: 7m + 14m - 6n - 5n + 2m. why do you add 6n with 5n instead of subtract?
Mademuasel [1]

Step-by-step explanation:

The reason is because it is not just 6 it is - 6 so when there are two negative numbers they don't subtract they add if it was 6n then it was to be subtracted

21m - 11n + 2m

23m - 11n

6 0
3 years ago
The ratio of the measures of the three angles in
julia-pushkina [17]

Answer:

24, 48, 108

Step-by-step explanation:

2:9:4

2x+9x+4x=180

15x=180

x=12

2(12)=24

9(12)=108

4(12)=48

3 0
2 years ago
Solve this question? 7x - 3x +7 =3 (x - 4)+20
Nady [450]
X=1

To solve this you start by adding like terms on the left side and doing the distributive property and adding like terms on the right. This would get you
4x+7=3x+8

Then you minus 3x on both sides getting
x+7=8

Then subtract 7 from both sides getting x=1.
6 0
3 years ago
Read 2 more answers
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