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blsea [12.9K]
3 years ago
15

Solve each system of equations by adding, subtracting, or multiplying.

Mathematics
1 answer:
professor190 [17]3 years ago
3 0
Solve each system of equations by adding, subtracting, or multiplying.

1) 3x - 3y = -9
2x + y = -3

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Write a system of equations to describe the situation below, solve using substitution, and fill
BlackZzzverrR [31]

Answer:

Revenue and Expense = $230

No. of attendees: 10

Step-by-step explanation:

Let n be the no. of attendees

Expense = 50 + 18n

Revenue = 23n

Break even when:

50 + 18n = 23n

50 = 5n

n = 10

23n = 230

5 0
3 years ago
X + 3= -x -5<br><br>what's x?​
Karo-lina-s [1.5K]

Answer:

-4

Step-by-step explanation:

4 0
3 years ago
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Which is greater 80 oz or 5 lb
Len [333]
There the same thing they both  weigh the same thing hope it helps and have a great day!
3 0
3 years ago
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Solve the following equation for 0°≤x≤360° : 2 cot 2x + 3 = 0
evablogger [386]

Answer:

π

2

,

3

⋅

π

2

,

3

⋅

π

4

,

7

⋅

π

4

Explanation:

Factorizing your equation we get

cot

(

x

)

=

0

so

cos

(

x

)

=

0

we get the following Solutions in the given interval

x

=

π

72

or

x

=

3

π

2

for the second case we get

cot

(

x

)

=

−

1

so

cos

(

x

)

=

−

sin

(

x

)

and we get

x

=

3

π

4

or

x

=

7

π

4

Hint:

To get the Solutions of the last equation you can use

√

sin

(

x

+

π

4

)

=

0

Step-by-step explanation:

3 0
3 years ago
The circumference of the base of the cone is 8.51 inches. What is the volume of the cone in terms of 1? Round to the nearest hun
andre [41]

Answer

14.212444625

Step-by-step explanation:

4 0
3 years ago
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