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xenn [34]
3 years ago
11

Solve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the

numbers or symbol.
2x+7y=-7

-4x-3y=-19

Mathematics
2 answers:
Harrizon [31]3 years ago
7 0
<span> 2x+7y=-7 / x 2
 4x+14y=-14+
-4x - 3y =-19
__________
14y-3y= -33
11y= -33
y = -3
2x = -7-7(-3)
2x = 21-7
2x = 14
x = 7</span>
Margarita [4]3 years ago
6 0
(7,-3). Hope this helps! 
~Astro, Helper in Training 

(2x+7y=-7 is in red, and -4x-37=-19 is in blue) 

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Isosceles triangle with square root
Vinil7 [7]

Answer: what are you asking?

Step-by-step explanation: can't detemrine contents of question ERROR>

3 0
3 years ago
Eight trials are simulated. The results are shown in the table.
bezimeni [28]

Answer:

2.897

Step-by-step explanation:

Let us find the mean and variance for the sample first.

105 104 110 112

114 106 108 109

Mean = sum/8 = 108.5

Variance = 12

Std dev = sq rt of variance = 3.464

Std error = std dev/ sq rt n

since n =8, we get std error = 1.225

Since sample size is small, df =8-1 =7

For 95% confidence intervals, t critical value for two tailed=2.365

Margin of error = std error x t critical = 1.225(2.365)

=2.897


3 0
3 years ago
Latoya's annual salary is $26,000. A total of $7352.24 will be deducted for taxes and health insurance. She will receive her pay
Anna71 [15]

Step-by-step explanation:

Lets translate this word problem into math.

"Latoya's annual salary is $26,000" = We start with the number 26,000

"A total of $7352.24 will be deducted for taxes and health insurance" = It's the number we started with "deducted" (minus) 7352.24

"She will receive her paycheck monthly in 12 equal installments" = Our number will be divided by 12

"How much will she get paid with each paycheck?" = "Find answer pls thx"

To put it all together...

\frac{26,000-7,352.24}{12}

Now all we have to do is solve!

\frac{26,000-7,352.24}{12}

  • Subtract.

\frac{18,647.76}{12}

  • Divide.

1,553.98

Answer:

Latoya will get paid $1,553.98 with each paycheck.

7 0
3 years ago
Pleaseeeeee help <br><br> The measure of angle is (5pi)/6 The equivalent measurement in degrees is
Archy [21]

Answer:

To convert from degree to radian we multiply the angle by

π/180

To convert from radian to degree we multiply the angle by

180/π

5π/6,

Multiply by

180/π

=

5π/6 × 180/π = 5 × 30 = 150 degrees.

⇒5π/6 radian =150 degree.

7 0
3 years ago
A 30-mile segment of road needs to be paved. 6 miles have already been completed. The paving crew can complete 3 miles of paving
wariber [46]

Answer: 8 days

Step-by-step explanation:

6 miles has been paved already.

Number of miles left = 30 - 6

= 24 miles

If they are paving at 3 miles a day, the days they will take to finish is:

= 24/3

= 8 days

5 0
3 years ago
Read 2 more answers
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