3 years ago

Please helpppppppppppppppppppppppppppppppppppppp

Mathematics

1 answer:

kherson [118]3 years ago

7 0

The answer to this one would be B

You might be interested in

A television normally costs $1,420. Due to a store sale, the television is now $1,022.40. What was the percentage taken off the

Anettt [7]

The TV is 28% off. You can verify this by dividing 1022.4 by 1420 and getting 0.72. That's how much of the price you have to pay.

So you just subtract .72 from 1 to .28

5 0

3 years ago

Read 2 more answers

The law of cosines is used to find the measure of Z.

Shtirlitz [24]

Answer:

C. $Z=51^{\circ}$

Step-by-step explanation:

We have been given a triangle. We are asked to find the measure of angle Z using Law of cosines.

Law of cosines: $c^2=a^2+b^2-2ab\cdot \text{cos}(C)$ , where, a, b and c are sides opposite to angles A, B and C respectively.

Upon substituting our given values in law of cosines, we will get:

$16^2=19^2+18^2-2(19)(18)\cdot \text{cos}(Z)$

$256=361+324-684\cdot \text{cos}(Z)$

$256=685-684\cdot \text{cos}(Z)$

$256-685=685-685-684\cdot \text{cos}(Z)$

$-429=-684\cdot \text{cos}(Z)$

$\frac{-429}{-684}=\frac{-684\cdot \text{cos}(Z)}{-684}$

$0.627192982456=\text{cos}(Z)$

$\text{cos}(Z)=0.627192982456$

Now, we will use inverse cosine or arc-cos to solve for angle Z as:

$Z=\text{cos}^{-1}(0.627192982456)$

$Z=51.1566718^{\circ}$

$Z\approx 51^{\circ}$

Therefore, the measure of angle Z is approximately 51 degrees.

6 0

3 years ago

Read 2 more answers

A good will do one of both of which two things select two answers

goldfiish [28.3K]

WUT?
MARK ME BRAINLEST

3 0

3 years ago

F(x)=x+1/x-2<br> find the inverse

Snowcat [4.5K]

X=1/2
Could be your answer

3 0

3 years ago

Write 785,420 in expanded form

Fofino [41]

Answer:

700,000+80,000+5,000+400+20

7 0

3 years ago

Read 2 more answers