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elixir [45]
2 years ago
14

What is the gcf of 21 and 40

Mathematics
2 answers:
Goshia [24]2 years ago
8 0
Factor
21=1*3*7
40=1*2*2*2*5
gcf=1
7nadin3 [17]2 years ago
5 0
1 is the gcf of 21 and 40
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For which value(s) of x will the rational expression below equal zero? Check all that apply.
geniusboy [140]

Answer:

x = 5 and -2

Step-by-step explanation:

Given the function of x to be;

f(x) = (x-5)(x+2)/x+1

The value of x that will make the function zero can be calculated for by equating the given function to zero first to have;

If f(x) = 0, then;

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

Cross multiplying;

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

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

x = 5 and x = -2

The value of x that will make the function zero is therefore 5 and -2

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3 years ago
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Answer:

C

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We need common denominator, which in this case is 40.

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We add these up 62/40

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3 0
2 years ago
6. A foresting service conducted a survey to see if tree farms that planted hardwood trees were more profitable over a 30-year p
stira [4]
No, because there is not enough information given to make a conclusion. Providing a percentage of 46% higher profit per acre doesn't mean statistical significance as it could be data-based only. There should be a given p value to make a conclusion about statistical significance.
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A tree farming company is testing how many items customers purchase during their visits. Based on many results, the (partial) pr
kkurt [141]

Answer:

X probability = 0.02

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Step-by-step explanation:

X       P ( X )            Cf ( X )

1        0.58                0.58

2        0.18                0.58 + 0.18 = 0.76

3        0.10                0.76 + 0.10 = 0.86

4        0.07                0.86 + 0.07 = 0.93

5        0.05                0.93 + 0.05 = 0.98

6        0.02                0.98 + 0.02 = 1

4 0
2 years ago
Kirk went to a friend’s house after dinner. He left his house at 7:29pm and returned home at 8:05pm. How long was Kirk gone for?
liberstina [14]

Answer:

36 minutes

Step-by-step explanation:you look at it and solve it

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