What is the value of 3x – 4y + z when x = 8, y = 2 and z = -6?

Answer:

Hope it helps :)

Step-by-step explanation:

The volume of a triangular prism shaped box is 2,400 cubic centimeters.

Base of the triangle = 16cm

Sides of the triangle = 17cm

Length of the box = 20cm

Triangular prism

A triangular prism is a three-sided prism made of a triangular base and a corresponding side.

A. To find the height of the base = 3 x the volume divided by the base area = 15cm.

B. The approximate amount of card board used to make the candy box:

Using the lateral prism as the sides will be:

Lateral area =  Perimeter of triangle X height of the prism

Lateral area =  (16 + 17 + 17) X 20

Lateral area =  50 X 20

Lateral area =  1,000 cm2

Therefore, the answer is 1000cm2.

Answer:

greater than

Step-by-step explanation:

9.123 * 103 = 939.669

9546 > 939.669

Angle of elevation is angle measured from horizontal line to line of sight, The distance from the plane to the observer is 25,636 feet approx

You look straight parallel to ground. But when you have to watch something high, then you take your sight up by moving your head up. The angle from horizontal line to the point where you stopped your head is called angle of elevation. See the figure where angle OPD is the angle when observer saw the plane. It  is measured from the horizontal line OD.

Refer to the attached figure.

It is given that we have

Length of PD = |PD| = 21,000 feet

Angle ∠OPD = 55°

Assuming length of OP = |OP| = x feet, we get the sin ratio as

[tex]sin(55^\circ) = \dfrac{|PD|}{|OP|} = \dfrac{21000}{x}\\\\x = \dfrac{21000}{\sin(55^\circ)} \approx 25636.27 \approx 25636 \: \rm feet[/tex]

(tan 55°  was calculated from online calculator)

Thus,

The distance from the plane to the observer is 25,636 feet approx.

Learn more about trigonometric ratios here:
https://brainly.com/question/22599614

Answer:

B. 25,636 ft.

Step-by-step explanation:

Cause I'm Asian, I make the rules here...

Answer:

x = -1/7   or  -0.14285 - in decimal form

Step-by-step explanation:

8x + 5 = -6x + 3

8x + 6x = 3 - 5       { change side }

14x = -2                  { basic addition and subtraction }

x = -2/14                 { changing sides }

x = -1/7                    { simplified }

Answer:

Step-by-step explanation:

[tex]4x^{2} + x - 3 \ Quadratic \ polynomial \ [ highest \ exponent \ is \ 2 ][/tex]

[tex]\dfrac{3}{5}v^{3}(3v^{2} -9)=\dfrac{3}{5}v^{3}*3v^{2}-\dfrac{3}{5}v^{3}*9=\dfrac{9}{5}v^{5}-\dfrac{27}{5}v^{3}[/tex]

Highest exponent is 5 and number of terms is 2. So, quintic  binomial

[tex]36m^{6}-9n^{2}[/tex]

Highest exponent is 6 and two terms. So, hexic binomial

Answer:

[tex]x^{2} +9x+18[/tex]

Explanation:

[tex]x(x+6)+3(x+6)\\x^{2} +6x+3(x+6)\\x^{2} +6x+3x+18\\x^{2}+9x+18[/tex]

Answer:

15/40 seats

Step-by-step explanation:

tamang sagot po yan

#carry on learning

[tex]6v - 8 > 22 \\ 6v > 22 + 8 \\ 6v > 30 \\ v > \frac{30}{6} \\ v > 5[/tex]

Answer:

The answer is C .

Step-by-step explanation:

Answer:

19+j=59

Step-by-step explanation:

Sum means adding and "and" in math means +

Considering a linear function, it is found that this activity costs 240 rands.

A linear function is modeled by:

[tex]y = mx + b[/tex]

In which:

In this problem, we suppose that:

Hence, the cost of sending x messages is given by:

y = 5x + 100.

February has 28 days, hence:

y = 5(28) + 100 = 240

This activity costs 240 rands.

More can be learned about linear functions at https://brainly.com/question/24808124

Answer:

The answer is X=11 and X=-11

Step-by-step explanation:

[tex] {x}^{2} = 121 \\ \sqrt{121} = 11 \\ therefore \: value \: of \: x \: is \: 11[/tex]

Answer:  (3000)*(0.09)*(4) = $1,080.00

Step-by-step explanation:

When money is borrowed, interest is charged for the use of that money over a certain period of time. The amount of interest charged depends on the amount of money borrowed, the interest rate and the length of time for which the money is borrowed.

Principal is the amount of money borrowed. The interest rate is given as a percent. Time is the length of time in years for which the money was borrowed.

Interest = Principal * Rate * Time which is also written as I = P*R*T

Principal = $3,000, Interest rate = 0.09 and Time = 4

Raquel had to pay back $3,000 in principal plus $1,080 in interest for a total of $4,080.00

(3000)*(0.09)*(4) = $1,080.00

Step-by-step explanation:

i) C = πd

C = π × 20yd

C = 20π yards

ii) A = πr²

A = 3.14 × 3²

A =28.26 m²

note that the radius here is 6/2 = 3m.

Answer:

B

Step-by-step explanation:

Answer:

angle 2 = 38° { because they are corresponding angles ,so they are equal }

Answer:

Step-by-step explanation:

∠2 = 38    {corresponding angles}

A pair of angles on the same side of the transversal, one of which is and interior angle and the other one is an exterior angles, but do not form a linear pair, is known as corresponding angles

Answer:

30

Step-by-step explanation:

All straight line equations are in the form:

[tex]y=mx+c[/tex]

Where m is the gradient and c is the y-intercept

In this equation +30 is the y-intercept

Answer:

The y-intercept is 30 in this equation

Step-by-step explanation:

This equation is in slope-intercept form.

Slope intercept form includes two things, (you can probably already guess)

It includes the slope of the line and the y-intercept

In all slope-intercept form equations the 20x would be the slope and the 30 would be the y-intercept

So that should be enough to give you your answer! I hope this helps and please award brainliest if possible!

Answer:

M=7.5

Step-by-step explanation:

hope this helps!

Answer:

5/6

Step-by-step explanation:

Find a common denominator for 1/2 and 1/3.

6

Then find the amount it equals to when 6 is the denominator

1/2 = 3/6

1/3 = 2/6

Now add them

2/6 + 3/6 = 5/6

Answer:

Combine the fractions by finding a common denominator.

Exact Form:

5/6

Decimal Form:

0.8¯3 (bar notation)

Step-by-step explanation:

Hope this helps =)

Answer: 33r + 9s

Step-by-step explanation: First, we need to distribute

the 3 through both terms inside the set of parenthses.

Students will often multiply the 3 by the 3s but forget

to multiply the 3 by the 9r, beware of this mistake.

So we get 6r + 9s + 27r which simplifies to 33r + 9s.

The equivalent expression is 33r + 9s

The expression is given as:

6r + 3(3s + 9r)

Expand the expression

6r + 9s + 27r

Collect like terms

6r + 27r + 9s

Evaluate the like terms

33r + 9s

Hence, the equivalent expression is 33r + 9s

Read more about equivalent expressions at:

https://brainly.com/question/2972832

Answer:

x = 2 and y = 3

Step-by-step explanation:

given:

using elimination rule:

 2x - 3y = -5

- 2x - y = - 7

................................

-4y = -12

y = 3

Find x:

2x - 3y = -5

2x - 3(3) = -5

2x - 9 = -5

2x = - 5+9

2x = 4

x = 2

Answer:

[tex]y=3\\x=2\\[/tex]

Step-by-step explanation:

[tex](2x-3y)-(2x+7)\\=-4y=(-5)-(7)\\-4y=-12\\y=12/4\\y=3[/tex]

Insert y=3 into any one equation in the system of equations:

[tex]2x-3(3)=-5\\2x-9=-5\\2x=4\\x=4/2\\x=2[/tex]

or

[tex]2x+(3)=7\\2x=4\\x=4/2\\x=2[/tex]

Answer:

36°

Step-by-step explanation:

108°+ 108°+ 2x+ 2x =360°

4x +216° = 360°

4x= 360°- 216°

Just X= 144°/4

=36°

2x= 2(36)

= 72°

Answer: 40 days

Step-by-step explanation: 50 divided by 5 equals 10 so 10 divided by 400= 40

Answer:

this is very hard, Good luck

Answer:

  D.  14 feet × 11 feet × 3 feet

Step-by-step explanation:

The volume of a rectangular prism is the product of its dimensions:

  V = LWH

  V = (14 ft)(11 ft)(3 ft) . . . . . matches choice D

Step-by-step explanation:

To identify how long each desk is, divide 27 feet by the 12 desks. (Given values)

[tex]\frac{27}{12} = 2\frac{1}{4}[/tex] [tex]or[/tex] [tex]2.25[/tex]

Each desk is 2.25 ft long.

Check:

[tex]2.25 \times 12 = 27[/tex]

Correct.

By using the graph, we will see that k = 1.85

Here we have the exponential function:

f(x) = k*(3)^x

And we want to find the value of k.

To find it, we need to use one point on the graph. the only one easy to read is the one for x = 3, we can see that when x = 3, f(x) = 50.

Then we have:

f(3) = 50 = k*(3)^3 = k*(3*3*3) = 27*k

Solving that for k we get:

50 = 27*k

50/27 = k = 1.85

If you want to learn more about exponential functions, you can read:

https://brainly.com/question/11464095

Answer:

2.24

Step-by-step explanation:

First I calculated the price for one g with the equation 2.56/400g.

I got .0064 per gram.

You can then multiply this by the 350g to get 2.24

Hope this helps

Select all the correct locations on the graph. At which points are the equations y = x2 + 3x + 2 and y = 2x + 3 approximately equal? 2.

Answer:

The equations are approximately equals at the points (0.618,4.236)(0.618,4.236) and (-1.618,-0.236)(−1.618,−0.236)