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3 years ago

1. A 42 inch television is 40.6 inches wide. Using the diagram below, determine the

Mathematics

1 answer:

sveticcg [70]3 years ago

6 0

Answer:

184.85 square mm

Step-by-step explanation:

The area of a sector of a circle is , where r is the radius and is the angle in radians subtended by the arc at the centre of the circle.

Since, diameter = 40.6 mm

So, radius(r)=20.3 mm and = radians

So, area of sector=

Step-by-step explanation:

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Please help picture below

Strike441 [17]

The answer is 5 and 0

(-5) + 5 = 0

4 0

2 years ago

What are the zeros of this graph?

Nikitich [7]

B. x=10 and x=60. these are the points where she doesn't loses or gain money.

Hope this helped! Mark as Brainliest Please! :))

4 0

3 years ago

Tom is 4 more than twice Andrew's age. Sara is 8 less than 5 times Andrew's age. If Tom and Sara are twins, how old is Andrew?

Ket [755]

T=2A+4
S=5A-8
If Tom and Sara are 10 years old,
10=2A+4
6=2A
3=A
Not sure though

6 0

3 years ago

Read 2 more answers

What is the slope line that passes through the points (10, 8) and (-15, 18)? Write your answer in simplest form

klasskru [66]

Answer: $y=-\frac{2}{5}x+12$

y = mx + b

m = slope = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{18-8}{-15-10}=\frac{10}{-25}=\frac{2(5)}{-5(5)}=-\frac{2}{5}$

The y-intercept(b) can be found by substituting a point into the function.

$y = -\frac{2}{5}x + b \\\\8=-\frac{2}{5}(10) + b\\\\8=-4+b\\\\b=8+4=12$

Therefore, the function is:

$y=-\frac{2}{5}x+12$

3 0

3 years ago

Use the quadratic formula to si 3x2 + 8x – 4= 0

omeli [17]

Answer:

$\large\boxed{x=\dfrac{-4-2\sqrt7}{3}\ or\ x=\dfrac{-4+2\sqrt7}{3}}$

Step-by-step explanation:

$\text{The quadratic formula for a quadratic equation}\ ax^2+bx+c=0\\\\\text{determinant:}\ \Delta=b^2-4ac\\\\\text{If}\ \Delta0,\ \text{then the equation has two different solutions}\ x=\dfrac{-b\pm\sqrt\Delta}{2a}.$

$\text{We have:}\\\\3x^2+8x-4=0\\\\a=3,\ b=8,\ c=-4\\\\\Delta=8^2-4(3)(-4)=64+48=112>0\\\sqrt\Delta=\sqrt{112}=\sqrt{(16)(7)}=\sqrt{16}\cdot\sqrt7=4\sqrt7\\\\x=\dfrac{-8\pm4\sqrt7}{2(3)}=\dfrac{-8\pm4\sqrt7}{6}=\dfrac{2(-4\pm2\sqrt7)}{6}=\dfrac{-4\pm2\sqrt7}{3}$

3 0

3 years ago