All categories

2 years ago

100 POINTS!! PLEASE HELP IM REALLY CONFUSED

Mathematics

1 answer:

11111nata11111 [884]2 years ago

3 0

Answer:

<A=½(arcJL)=½(70+120)=35+60=95°

[inscribed angle is half of central angle]

<W=½arcVX=½(130)=65°

[inscribed angle is half of central angle]

<E=½(arcDC)=½(90)=45°

[inscribed angle is half of central angle]

<R=½(arcXZ)=½(110+62)=86°

[inscribed angle is half of central angle]

<B=½(arc DC)=½×104°=52°

[inscribed angle is half of central angle]

<K=90°

[inscribed angle in a diameter is complementary]

<K+<J+<L=180°(sum of interior angle of a triangle]

<L=180°-90°-53°=37°

again

arc JK=2×<L=2×37=74°

You might be interested in

Need help with this question!

rosijanka [135]

Not sure:((((((( sorrryyyy

3 0

2 years ago

Read 2 more answers

Whats the square of a negative number?

Doss [256]

Answer:

A negative number squared is a positive number. Squaring is multiplying a number by its self.

Step-by-step explanation:

X^2 = x * x

Squaring something is just multiplying it by its self.

A negative times a negative = a positive

A positive times a positive = a positive

A negative times a positive = a negative

A positive times a negative = a negative

- * - = +

+ * + = +

- * + = -

+ * - = -

Here is how my 6th grade teacher helped me to remember it:

If something bad (-) happens to a bad guy (-), that is good.

If something good (+) happens to a good guy (+), that is good.

If something bad (-) happens to a good guy (+), that is bad.

If something good (+) happens to a bad guy (-), that is bad.

I hope I helped!

Let me know if you need anything else!

~ Zoe

3 0

2 years ago

Make a Matlab script to make row 2 of matrix A equal to first row of A multiplied by the negative of the first element of row 2

stira [4]

Answer:

$X=\begin{Bmatrix}2& 1 &10 \\-3 & 5 & 4\end{Bmatrix}$

Step-by-step explanation:

From the question we are told that

Matrix is given as $A=\begin{Bmatrix}2 & -1 & 10\\-3 & 8 & 4\end{Bmatrix}$

Generally let the change in matrix be given as X

$X_1_2 = 2*(-(-1)) + - 1 = 1X_2_2 = -3 * (-(-1))+ 8 = 5$

Matlab output

$A=[2 -1 10;-3 8 4]\\a=(A(1,1)*-A(1,2))+A(1,2)\\b=(A(2,1)*-A(1,2))+A(2,2)\\X=[A(1,1) a A(1,3); A(2,1) b A(2,3)]\\$

Generally the matrix that makes row 2 of matrix A equal to first row of A multiplied by the negative of the first element of row 2 plus the original row is

$X=\begin{Bmatrix}2& 1 &10 \\-3 & 5 & 4\end{Bmatrix}$

6 0

2 years ago

Toucans and blue-and-yellow macaws are both tropical birds. The length of the toucan in the picture to the right is about two t

Sergeu [11.5K]

Answer:

The length of the blue-and-yellow macaw is 42 in

Step-by-step explanation:

Let

x ----> the length of the toucan in inches

y ----> the length of the blue-and-yellow macaw in inches

we know that

$x=\frac{2}{3}y$ ----> equation A

$x=28$ ----> equation B

substitute equation B in equation A and solve for y

$28=\frac{2}{3}y$

Multiply by 3 both sides to remove the fraction

$28(3)=2y$

Divide by 2 both sides

$y=\frac{28(3)}{2}=42\ in$

therefore

The length of the blue-and-yellow macaw is 42 in

3 0

2 years ago

Maggie is trying to find the best deal to buy bags of potato chips. Option A: $0.90 for 9 bags of chips Option B: $0.84 for 7 ba

Ainat [17]

Answer:

The answer is option A. Since you would be paying 0.10 for each bag.

7 0

2 years ago