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yawa3891 [41]
4 years ago
7

Is the ordered pair (–8, –7) a solution to the equation 3x + 10 = 2y? Show your work.

Mathematics
1 answer:
Elena L [17]4 years ago
4 0

Answer:

yes

Step-by-step explanation:

Substitute x = - 8 and y = - 7 into the equation

If both sides are equal then (- 8, - 7) is a solution

left side = 3x + 10 = 3(- 8) + 10 = - 24 + 10 = - 14

right side = 2y = 2(- 7) = - 14

Since both sides are equal then (- 8, - 7) is a solution to the equation

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Answer:

(Choice A)

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Step-by-step explanation:

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3 years ago
What is the slope of the line that contains the points (-4, 2) and (6, -3)?
mote1985 [20]

Answer:

-1/2 or -\frac{1}{2}

Step-by-step explanation:

to find the slope, use the formula

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A set of twins, Andrea and Courtney, are initially 10 years old. While Courtney remains on Earth, Andrea rides on a spaceship th
SVETLANKA909090 [29]

The initial age of 10 years and the spaceship speed of 0.60•c, gives the Andrea's age at the end of the trip as 18 years.

<h3>How can Andrea's new age be calculated?</h3>

The time dilation using the Lorentz transformation formula is presented as follows;

t' =  \frac{t}{ \sqrt{1 -  \frac{ {v}^{2} }{ {c}^{2} } } }

From the question, we have;

The spaceship's speed, <em>v</em> = 0.6•c

∆t = Rest frame, Courtney's time, change = 10 years

Therefore;

\delta t' =\delta t \times  \sqrt{1 -  \frac{ {(0.6 \cdot c)}^{2} }{ {c}^{2} } } = 8

The time that elapses as measured by Andrea = 8 years

Andrea's age, <em>A</em>, at the end of the trip is therefore;

A = 10 years + 8 years = 18 years

Learn more about the Lorentz transformation formula here:

brainly.com/question/15544452

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3 0
2 years ago
Which of the following would be an acceptable first step in simplifying the expression
krek1111 [17]

Answer: A

Step-by-step explanation: Because it can be simplified twice.

7 0
2 years ago
Plz help me someone!
adoni [48]

Answer:

m+5nx(9-p)-6-2r

Step-by-step explanation:

here you go

4 0
4 years ago
Read 2 more answers
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