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FromTheMoon [43]
3 years ago
15

The solution of the equation 5-2x=-4x-7 is?​

Mathematics
1 answer:
butalik [34]3 years ago
8 0

Answer: x=-6

Step-by-step explanation:

5-2x=-4x-7

5+2x=-7

2x=-12

X=-6

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PLEASE HELP. Please show all work. Im giving 80 points to whoever answers it first.
mr_godi [17]

Answer:

1.1) B=12.42°, C=146.58°, c=15.37  

1.2) B=8°, C=124°, c=35.7  

2) In the case of SSA, when the given angle A is acute (<90°), the side "a" (opposite to the given angle "A") is less than the other given side "b" (a<b), and a > b sinA.  

3.1) Perimeter = 31.37 units, Area = 16.5 square units  

3.2) Perimeter = 73.70 units, Area = 75.6 square units  

4.1) Magnitude of vector AB=5.1

4.2) Direction of vector AB=348.69°  

5.1) The dot product of two vectors is equal to the sum of the product of their components

5.2) a . b = 10  

6.1) Trigonometric form: z = 3√2 (cos 315°+ i sin 315°)  

6.2) The 4th roots are:  

w1 = 18^(1/8) [cos(78.75°) + i sin(78.75°)]

w2 = 18^(1/8) [cos(168.75°) + i sin(168.75°)]

w3 = 18^(1/8) [cos(258.75°) + i sin(258.75°)]

w4 = 18^(1/8) [cos(348.75°) + i sin(348.75°)]


Step-by-step explanation:

3.1) Perimeter: P = a+b+c → P = 10+6+15.37 → P = 31.37  

Area: A = a b sinC / 2

Replacing the known values:

A = (10)(6) sin 146.58325418° / 2 → A = 60(0.55072472) / 2 →

A = 16.52174152 → A = 16.52 square units


3.2) Perimeter: P = a+b+c → P = 32+6+35.70 → P=73.70

Area: A = a b sin C /2

Replacing the known values:

A = (32)(6) sin 123.99036327° / 2 → A = 192(0.82913161) / 2 →

A = 75.59663485 → A = 75.6 square units

3 0
3 years ago
Solve by sunstitution y=-x+4, y=3x
enyata [817]

Answer:

x=2

Step-by-step explanation:

y=-x+4   y=3x

3x=x+4

2x=4

x=2

(I hope this is the answer)

4 0
3 years ago
Is the difference of two rational numbers always rational? Explain
Dominik [7]
The product of two integers is an integer; the difference of two integers is an integer; a rational is defined as one integer divided by another non-zero integer.<span> 

the diference of two numbers is always rational</span>
5 0
3 years ago
What is the solution to the system of equations l? y= 1/2x-6 x=-4
alina1380 [7]

Answer:

<h2>x = -4 and y = -8 → (-4, -8)</h2>

Step-by-step explanation:

y=\dfrac{1}{2}x-6\\\\x=-4\\\\\text{Put the value of x to the first equation:}\\\\y=\dfrac{1}{2}(-4)-6\\\\y=-2-6\\\\y=-8

4 0
2 years ago
Solve the System by substitution <br><br> y=9x<br> y=3x+12
jarptica [38.1K]

Answer:

(2, 18) or x = 2 and y = 18

Step-by-step explanation:

From substitution:

9x = 3x + 12

6x = 12

x = 2

y = 9x = 9 * 2 = 18

3 0
2 years ago
Read 2 more answers
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