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faltersainse [42]
3 years ago
13

Help!!

Mathematics
2 answers:
Xelga [282]3 years ago
6 0

Answer:

D. 63%

Step-by-step explanation:

the white marble was picked out 41 of the 65 times, so 41/65

divide 41 by 65 in your calculator and you get .6307

then multiply it by 100 because it asked for a percentage and you get 63%

Ta-Da!

Zarrin [17]3 years ago
4 0

Answer:

63%

Step-by-step explanation:

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Whats the difference between a subset and a proper subset? {5,8} {2,5,8} Is {5,8} a subset of {2,5,8}.
valina [46]

Answer:

\{5,8\} is a subset of \{2,5,8\}

Step-by-step explanation:

Required

Difference between subset and proper subset

To answer this question, I will use the following illustration.

A = \{1,2,3\}

B = \{2,3\}

C = \{1,2,3\}

In the above sets, set B is a proper subset of set A because all elements of B can be found in A, but not element of A can be found in B.

Set C is a subset of A because A = C

Using the above illustration, we have:

\{5,8\} and \{2,5,8\}

\{5,8\} is a subset of \{2,5,8\}, because 5 and 8 are in \{2,5,8\} but 2 which ca be found in \{2,5,8\} is not in \{5,8\}

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2 years ago
What are the x-intercepts of 4x^ + 8x - 5
mojhsa [17]
Assuming the exponent is supposed to be "^2" your equation will read:

4x² + 8x - 5

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4x² + 8x - 5 = 0
4x² - 2x + 10x - 5 = 0
2x(2x - 1) + 5(2x - 1) = 0

(2x + 5)(2x - 1) = 0

Set each binomial equal to zero.

2x + 5 = 0
2x = 0 - 5
2x = - 5
Divide both sides by 2
x = - 5/2

2x - 1 = 0
2x = 0 + 1
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x = 1/2

Your x-intercepts are x = - 5/2, 1/2 or (- 5/2, 0) and (1/2, 0)
6 0
2 years ago
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Gemiola [76]

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3 years ago
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Anna11 [10]

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Step-by-step explanation:

5 0
3 years ago
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Given f(x) = 10 -2xfind f(7). –4 3 7 56
strojnjashka [21]

Answer: f(7)=-4

Step-by-step explanation:

1. You have the following function given in  the problem:

f(x)=10-2x

2. Then, to find f(7) asked in the exercise, you only need to substitute x=7 (which is the input value) into the given function.

3. Therefore, keeping the above on mind, you obtain that f(7) is:

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f(7)=10-14

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3 years ago
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