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4 years ago

Please can anyone help me!

Mathematics

1 answer:

natita [175]4 years ago

6 0

In order
(4,17)
(-5,8)
(12,1)

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Find the circumference of both circles

asambeis [7]

Answer:

2πr=circumference

Step-by-step explanation:

small circle has 12 inc length so it's circumference is 2*π*12 =24π

big circle has 14 İnc Length so it has 2*π*14=28

6 0

2 years ago

What is the approximate value of b, rounded to the nearest tenth? Use the law of sines to find the answer. Triangle A B C is sho

Setler79 [48]

Answer:

4.7 units

Step-by-step explanation:

We are given that in triangle ABC

AB= 3 units

Angle ABC=76 degree

Angle CAB=66 degrees

AC=b

We have to find the approximate value of b using sin laws.

We know that sum of angles of a triangle =180 degrees

$\angle CAB+\angle ABC+\angle ACB=180$

$76+66+\angle ACB=180$

$142+\angle ACB=180$

$\angle ACB=180-142=38^{\circ}$

We know that law of sines

$\frac{BC}{Sin A}=\frac{AC}{SinB}=\frac{AB}{sin C}$

Substitute the values then we get

$\frac{b}{sin 76^{\circ}}=\frac{3}{sin 38^{\circ}}$

$b=\frac{3}{sin 38^{\circ}}\times sin 76^{\circ}$

$b=4.7$

Hence, the value of b= 4.7 units

5 0

4 years ago

Read 2 more answers

Sine is opposite divided by hypotenuse. So the sine of an angle times the hypotenuse is the length of the opposite side. What is

valkas [14]

Answer:

10 m

Step-by-step explanation:

opposite = sin30° × 20 = $\frac{1}{2}$ × 20 = 10 m

7 0

2 years ago

How to solve a-2+3=-

sweet-ann [11.9K]

A-2+3= -2
⇒ a+ (-2+3)= -2 (combine like terms)
⇒ a+ 1= -2
⇒ a= -2-1
⇒ a= -3

Final answer: a=-3~

4 0

4 years ago

State the y-coordinate of the y-intercept for the function below.

marta [7]

Answer:

Step-by-step explanation:

y-intercept is defined as the point where the graph crosses the y-axis. The value of x coordinate at this point is zero, as along entire y-axis, the value of x coordinate is always zero. So substituting x = 0 in the function will give us the y-coordinate of the y-intercept of the given function.

$f(x)=x^{3}-x^{2} -x+1$

Substituting x = 0 in this function, we get:

$f(0)=0^{3}-0^{2}-0+1=1$

Thus, the y-coordinate of the y-intercept is 1. Therefore the y-intercept of the function in ordered pair will be: (0, 1)

3 0

3 years ago