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3 years ago

What’s the value of 8x+2y

Mathematics

2 answers:

Dmitrij [34]3 years ago

8 0

8x + 2y

Since you know x = 5, you can plug in 5 for "x" in the equation

Since you know y = 9, you can plug in 9 for "y" in the equation

So:

8x + 2y

8(5) + 2(9)

40 + 18

58 Your answer is B

maksim [4K]3 years ago

5 0

Answer: I would say your answer is b)

Step-by-step explanation:

8(5)+2(9)=

40+18

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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.

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3 years ago

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What’s the answer<br> ..................... HELP

Anestetic [448]

Answer:7x+9

Step-by-step explanation:7x+6=3x+7=7x+9

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3 years ago

Find the first six terms of the sequence. a1=-7, an=2*an-1

AlladinOne [14]

The first term of the sequence is $a_{1} = -7$ .

The sequences is recursive, every next term of the sequence is obtained by multiplying the previous term by 2.

So, we can find the next 6 terms as shown below:

$a_{2} = 2*a_{1}=2(-7)=-14$
$a_{3} = 2(-14)=-28$
$a_{4} = 2(-28)=-56$
$a_{5} = 2(-56)=-112$
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3 years ago

One month, 24 employees earned a bonus and 56 employees didn't earn one. Express the number of employees who received the bonus

anastassius [24]

Answer:

A. 24:56

Step-by-step explanation:

Let's find the answer by considering that 'X' represents the employees that earn the bonus and 'Y' the employees that didn't.

Where:

X=24

Y=56

Now, ''Express the number of employees who received the bonus as an unsimplified ratio to the number of employees who didn't receive the bonus'' means:

employees that earn the bonus : employees that didn't receive the bonus

which is:

X:Y = 24:56

In summary, the answer is A. 24:56.

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