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dexar [7]
2 years ago
6

Which choice shows (50 + 20) + 30 correctly rewritten using the associative

Mathematics
1 answer:
MrRissso [65]2 years ago
8 0

Answer:

<h2>100</h2>

Step-by-step explanation:

BIDMAS

do the bracket first

50+20=70

70+30=100

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Write a subtraction expression using integers that equals -6.
pochemuha

Answer:

-9 minus -3

Step-by-step explanation:

-9 - (-3) = -9 + 3 = -6

Subtract and keep the sign of the bigger number.

8 0
3 years ago
Hey guys plz help with this one i beg
kvv77 [185]

Answer:

102

Step-by-step explanation:

i think it is the ans.

6 0
3 years ago
1
Marianna [84]

Answer:

  B. {16, 19, 20}

Step-by-step explanation:

The <em>triangle inequality</em> requires for any sides a, b, c you must have ...

  a + b > c

  b + c > a

  c + a > b

The net result of those requirements are ...

  • the sum of the two shortest sides must be greater than the longest side
  • the length of the third side lies between the difference and sum of the other two sides

__

If we look at the offered side length choices, we see ...

  A: 8+11 = 19 . . . not > 19; not a triangle

  B: 16+19 = 35 > 20; could be a triangle

  C: 3+4 = 7 . . . not > 8; not a triangle

  D: 5+5 = 10 . . . not > 11; not a triangle

The side lengths {16, 19, 20} could represent the sides of a triangle.

_____

<em>Additional comment</em>

The version of triangle inequality shown above ensures that a triangle will have non-zero area.

The alternative version of the triangle inequality uses ≥ instead of >. Triangles where a+b=c will look like a line segment--they will have zero area. Many authors disallow this case. (If it were allowed, then {8, 11, 19} would also be a "triangle.")

4 0
2 years ago
Evaluate. Write your answer as a decimal or whole number.<br><br> (0.7)3 =
Inessa05 [86]
I think that it is 10
8 0
2 years ago
Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at t
Wittaler [7]

Answer:

Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at the 0.2 significance level.

The null and alternative hypothesis would be: H 0 : μ M = μ F H 1 : μ M < μ F H 0 : μ M = μ F H 1 : μ M > μ F H 0 : p M = p F H 1 : p M ≠ p F H 0 : p M = p F H 1 : p M < p F H 0 : p M = p F H 1 : p M > p F H 0 : μ M = μ F H 1 : μ M ≠ μ F

The test is:

right-tailed

left-tailed

two-tailed

Based on a sample of 40 men, 25%Based on a sample of 40 men, 25% owned cats

Based on a sample of 40 women, 40% owned cats

The test statistic is:

The p-value is:

Based on this we:

Reject the null hypothesis

Fail to reject the null hypothesis

6 0
2 years ago
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