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3 years ago

PLEASE HELP I GIVE THANKS

Mathematics

2 answers:

lesantik [10]3 years ago

8 0

The answer would be C
Because, 23 times 4 equals: 92. And 28 times 4 equals: 112.
So, 29, and 112 are the lengths of the answer c
~Hope this helps! :)

xxMikexx [17]3 years ago

5 0

The answer is C. The lengths of the first triangle is 23 and 28 mm, a similar figure's side lengths have to be proportional so. The one in the choice C is 4 times the first triangle ,
$4\cdot 23=92\\ and\\ 4\cdot 28=112$

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Answer:

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Step-by-step explanation:

To answer this question let's call $t_1$ while it takes Jenna to clean the gutters

Let's call $t_2$ while it takes John to clean the gutters

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The speed of each one is:

$V_1 = \frac{1}{4}$ g/ h

$V_2 = \frac{1}{3}$ g/h

$V = V_1 + V_2 = \frac{g}{t} = \frac{1}{t}$

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$\frac{1}{t} = \frac{1}{4} + \frac{1}{3}= \frac{7}{12} g/h$

$t = \frac{12}{7}$ h

Then, both together paint $\frac{7}{12}$ of gutters for each hour.

This means that it takes $\frac{12}{7}$ hours to clean the gutters together

Finally cleaning together takes 1,714 hours or also

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So we have the following simple statements:

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Thus, let's solve each notation.

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Symbol: & (also ∧)
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Answer:

p ∧ q: The book is interesting and the book has pictures.

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Answer:

p ↔ q: The book is interesting if and only if the book has pictures.

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Disjunction operator: The disjunction operator creates a compound statement that is true if either simple statement is true but false if both simple statements are false.

Symbol: ∨
Parts of disjunction: Two simple statements joined by the disjunction symbol

Answer:

p ∨ q: The book is interesting or the book has pictures.

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Symbol: →
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Answer:

p → q: If the book is interesting then the book has pictures.

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