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3 years ago

What is the sum of x + y when x = –2.7 and y = 5.2?

Mathematics

1 answer:

damaskus [11]3 years ago

6 0

- 2.7 + 5.2
= 2.5

the answer is c

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What is the y-value of sin(x) when x = 30°

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The sine of 30° is 0.5 .

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For neighborhood parks of a given size, the equation yˆ=7.219x+2.033 models the number of children at a park, where x is the num

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I'm not 100% sure, but I believe the answer would be:
D. For every additional adult at the park, the number of children increases by about 7.
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3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%283x%5E%7B3%7D%20y%5E%7B2%7D%20z%29%282xy%5E%7B5%7D%20z%5E%7B5%7D" id="TexFormula1" title="(3

castortr0y [4]

<h3 /><h3> $( {3x}^{2} {y}^{2} z) \: ( {2xy}^{5} {z}^{5} ) \\ = 6 {x}^{2} {y}^{2} {xy}^{5} {z}^{6}$ </h3><h3>[ Multiply all digits and variables according to there same value ]</h3>

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em><em> ❤️</em>

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3 years ago

A taxi driver had 27 fares to and from the airport last Monday. The price for a ride to the airport is $14, and the price for a

OLga [1]

Answer:

(15, 12)

Step-by-step explanation:

Let's generate two systems of equations that fit this scenario.

Number of trips to the airport = x

Number of trips from the airport = y

Total number of trips to and from the airport = 27

Thus:

$x + y = 27$ => equation 1.

Total price for trips to the Airport = 14*x = 14x

Total price of trips from the airport = 7*y = 7y

Total collected for the day = $294

Thus:

$14x + 7y = 294$ => equation 2.

Multiply equation 1 by 7, and multiply equation 2 by 1 to make both equations equivalent.

7 × $x + y = 27$

1 × $14x + 7y = 294$

Thus:

$7x + 7y = 189$ => equation 3

$14x + 7y = 294$ => equation 4

Subtract equation 4 from equation 3

-7x = -105

Divide both sides by -7

x = 15

Substitute x = 15 in equation 1

$x + y = 27$

$15 + y = 27$

Subtract both sides by 15

$y = 27 - 15$

$y = 12$

The ordered pair would be (15, 12)

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3 years ago