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pishuonlain [190]
4 years ago
14

I need help and can you plz tell me the answer

Mathematics
1 answer:
Sav [38]4 years ago
7 0
The least common multiple of 4 and 7 is 28 I think sorry I haven't been in school for a week
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What is the equation of a line perpendicular to why=2x-6 that passes through (5,4)
almond37 [142]

Answer:

y = ½(13- x)

Step-by-step explanation:

Step 1. Find the<em> slope (m₁) of the original line </em>

The equation for the original line is

      y = 2x - 6

slope = m₁ = 2

Step 2. Find the <em>slope (m₂) of the perpendicular line </em>

m₂ = -1/m₁     Substitute the value of m₁

m₂ = -1/2

Step 3. Find the <em>equation for the perpendicular line</em>

y = mx + b     Substitute the value of m₂

y = -½x + b

The line passes through (5, 4).  

4 = -½(5) + b     Add 5/2 to each side

4 = -5/2 + b     Add 2 to each side

b = 13/2  

y = -½x + 13/2

y = ½(13 – x)  

In the image, below, the red line is the graph of your original equation.

The blue line passing through (5, 4) is the perpendicular line.

4 0
3 years ago
10m^3 of air weigh 13 kg.
mihalych1998 [28]

Answer:

The weigh of air in the room having volume 38.22 m³ is 49.68 kg  

Step-by-step explanation:

Given as :

Length of room = 4.2 m

Width of room = 3.5 m

Height of room = 2.6 m

So ,  volume of room = Length × Width × Height

Or,   volume of room = 4.2 m × 3.5 m × 2.6 m

∴,     volume of room = 38.22 m³

Now,

∵  10 m³ of air weigh 13 kg

so, 1 m³ of air weigh =  \frac{13}{10} kg

∴    38.22 m³ of air weigh = \frac{13}{10} kg × 38.22 kg

I.e 38.22 m³ of air weigh = 49.68 kg

Hence The weigh of air in the room having volume 38.22 m³ is 49.68 kg  Answer

6 0
3 years ago
Tell which rule applies to each expression
Kryger [21]

Answer:

1. Product

2. Power

3. Quotient and power

Step-by-step explanation:

Product is for multiplication

Power is for exponents

Quotient is for division

8 0
3 years ago
Read 2 more answers
The angle of elevation of the sun is 68° when a tree casts a shadow 14.3 m long. How tall is the tree, to the nearest tenth of a
crimeas [40]


The tree and the shadow make a right triangle with the tree height opposite the 68 degree angle:


\tan \theta = \dfrac{h}{s}


h = s \tan \theta = 14.3 \tan 68^\circ = 35.3937...


Choice C



3 0
4 years ago
Find the volume of the sphere.<br> Enter an exact answer using 3.14 for pi
svetoff [14.1K]

Answer:

The volume for the sphere is 904.78

7 0
3 years ago
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