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2 years ago

Which of the following is the value of x?

Mathematics

2 answers:

salantis [7]2 years ago

7 0

Since they are oposite, they have same angle measure
2x-10=5x-100
minus 2x both sides
-10=3x-100
add 100 both sides
90=3x
divide by 3 bot sides
30=x
B is answer

kirill [66]2 years ago

4 0

Answer:

Step-by-step explanation:

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What phrases describes the expression of 16-y

Answer: -9

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2 years ago

Please help with this simple trig problem- angle of two sectors of a circle

igomit [66]

Answer:

K = (1/2)r^2(sin(θ) +θ)

Step-by-step explanation:

The area of the triangle to the left is ...

A1 = (1/2)r^2·sin(180°-θ) = (1/2)r^2·sin(θ)

The area of the sector to the right is ...

A2 = (1/2)r^2θ

so the total area of the blue shaded region is ...

K = A1 + A2 = (1/2)r^2·sin(θ) + (1/2)r^2·θ

K = (1/2)r^2(sin(θ) +θ)

4 0

2 years ago

PLEASE HELP

Andrei [34K]

Given that the radius of the circle is 6 cm.

The central angle is 120°

We need to determine the length of AB.

Length of AB:

The length of AB can be determined using the formula,

${arc \ length}=2 \pi r\left(\frac{\theta}{360}\right)$

Substituting $\theta=120$ and $r=6$ in the above formula, we get;

$arc\ length}=2 \pi (6)\left(\frac{120}{360}\right)$

Simplifying the values, we get;

$arc\ length}=2 \pi (6)\left(\frac{1}{3}\right)$

$arc\ length}=12 \pi \left(\frac{1}{3}\right)$

$arc\ length}=4 \pi$

Substituting π = 3.14, we have;

$arc\ length}=4(3.14)$

$arc\ length}=12.56$

Thus, the arc length of AB is 12.56 cm

3 0

2 years ago

H(x)=2x^2+3x-7 find h(-1)

nata0808 [166]

Answer:

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Step-by-step explanation:

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2 years ago

A bag contains n nickels and a quarters worth a total of $40.

soldier1979 [14.2K]

A nickel is worth 0.05 and a quarter is worth 0.25.

Multiply number of nickels by the worth and quarters by their worths. Add together to equal total value:

The equation is:

0.05n + 0.25q = $40

3 0

2 years ago