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Svetlanka [38]
2 years ago
15

What is the value of the expression? (–1.9 + 16) + (–7.1) A. –25 B. –10.8 C. 7 D. 21.2

Mathematics
1 answer:
Levart [38]2 years ago
4 0
Answer: c

-1.9+16= 14.1
14.1-7.1= 7.0

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Sonja's house is 4 blocks west and 1 block south of the center of town. Her school is 3 blocks east and 2 blocks north of the ce
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The answer is √58 = 7.62

So, if you draw this down, you will see that the direct distance is hypotenuse c of a right triangle which sides are 3 blocks (1 south and 2 north) and 7 blocks (4 west and 3 east).
Use the Pythagorean theorem:
c² = a² + b²
a = 3
b = 7

c² = 3² + 7²
c² = 9 + 49
c² = 58
c = √58
c = 7.62
6 0
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A triangular window pane has a base of 30 inches and a height of 24 inches what is the area of the window pane
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3 years ago
What is the sum -2/3 + (-1 1/6) = -4/6 + (-1 1/6)
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Answer:

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Step-by-step explanation:

7 0
2 years ago
Macy is playing with a standard deck of fifty-two playing cards. She selects one card at random from the deck. What is the proba
olasank [31]

Answer:

The probability that the card is an ace is \frac{1}{13}

Step-by-step explanation:

Total number of playing cards = 52

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She selects one card at random from the deck.

We are supposed to find the probability that the card is an ace

So, Probability of getting card= \frac{\text{No. of ace cards}}{\text{Total no. of cards}}

Probability of getting card= \frac{4}{52}=\frac{1}{13}

Hence the probability that the card is an ace is \frac{1}{13}

3 0
3 years ago
MY BRAIN IS DEAD! PLS HELP MEH ITS THE LAST ONE! TYSM! Time taken for 6 people to build a house is 30 days. How many days will i
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Answer:

2 people will take 90 days to complete the same house

Step-by-step explanation:

<u><em>Given:</em></u>

T1 = 30 days

P1 = 6

T2 = x

P2 = 2

This is an inverse proportion because if there are more people, less time will be taken to complete the house and vice versa.

<u><em>So, We'll write it in the order of :</em></u>

=> T1:T2 = P2:P1

=> 30:x = 2:6

<u><em>Writing in fraction form</em></u>

=> \frac{30}{x} = \frac{2}{6}

<em>Cross Multiplying</em>

=> 2x = 180

<em>Dividing both sides by 2</em>

=> <u><em>x = 90 days</em></u>

So, <u><em>2 people will take 90 days to complete the same house</em></u>

8 0
3 years ago
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