8x+6+4x+38=180 what’s the answer

Mathematics

2 answers:

Pavlova-9 [17]4 years ago

7 0

x= 34 /3 thats what I got 34/3=11.333333

Mice21 [21]4 years ago

4 0

12x + 44 = 180
180-44= 136
136/12=11.3 reoccurring

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3. What is the radius of the figure if the Area of the Sector is 288*pi? *

Alla [95]

Answer:

The radius of the circle is 36

x = 36

Step-by-step explanation:

Area of sector formula is:

$A=\frac{\theta}{360}*\pi r^2$

Given $\theta=80$ , and area (A) is $288\pi$ , we substitute and solve for r:

$A=\frac{\theta}{360}*\pi r^2\\288\pi=\frac{80}{360}*\pi r^2\\288\pi=\frac{2}{9}*\pi r^2\\288\pi=\frac{2\pi r^2}{9}\\2\pi r^2= 2592 \pi \\r^2= 1296\\r=\sqrt{1296}\\r=36$

Thus,

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7 0

3 years ago

What is the axis of symmetry of the function f(x)=−(x+9)(x−21)?

Elena L [17]

Answer:

Therefore the given equation is a parabolic equation with vertex at (6,255) and the axis of symmetry is given by x = 6.

Step-by-step explanation:

i) f(x) = -(x+9)(x-21)

ii) therefore y = f(x) = - $x^{2}$ + 12x + 189 = - ( $x^{2}$ - 12x +36) + 36 + 189

iii) therefore y = f(x) = - $(x-6)^{2}$ + 225

iv) when x = 6 then y = 255

Therefore the given equation is a parabolic equation with vertex at (6,255) and the axis of symmetry is given by x = 6.

7 0

4 years ago

Read 2 more answers

0.000360 A = _______ μA

alukav5142 [94]

Answer: 0.000360 A = 360 μA

Explanation:
Method 1 (FAST):
The micro (μ) is equal to $10^{-6}$ . It means that we have to move the decimal point 6 times to the right as the power of 10 is MINUS 6. Hence the answer is 360μA.

Information: If the power of 10 were POSITIVE 6 (incase of Mega), we have to move the decimal point 6 times to the LEFT.

Method 2:
Divide 0.000360 A by $10^{-6}$ , since The micro (μ) is equals to $10^{-6}$ .
 $\frac{0.000360}{10^{-6}}$ μA = 360 μA