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MaRussiya [10]
2 years ago
13

I need help answering this

Mathematics
1 answer:
mr_godi [17]2 years ago
7 0

Answer:

uhm i would say the second one but i might be very wrong

Step-by-step explanation:

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A garage floor measures 150 feet by 120 feet. A scale drawing of the floor on grid paper uses a scale of 1 unit and 15 feet.What
vova2212 [387]

Answer:

The dimensions of the drawing are 10 units by 8 units

Step-by-step explanation:                        

we know that

The scale drawing is \frac{1}{15}\ \frac{unit}{feet}

That means ---> 1 unit in the drawing represent 15 feet in the actual

To find out the dimensions of the drawing, multiply the actual dimensions by the scale drawing

so

150\ ft=150(\frac{1}{15})=10\ units

120\ ft=120(\frac{1}{15})=8\ units

therefore

The dimensions of the drawing are 10 units by 8 units

6 0
3 years ago
The number of board feet in a 16 foot long tree is approximated by the model F(d) = 0.77d^2 -- 1.32d -- 9.31 where F is the numb
Lubov Fominskaja [6]

we are given

F(d)=0.77d^2-1.32d-9.31

where

F is the number of board feet

d is the diameter (in inches) of the log

Since, we have to minimize F

so, firstly we will find it's derivative

F'(d)=0.77\times 2d-1.32\times 1-0

F'(d)=1.54d-1.32

now, we can set it to 0

and then we can solve for d

F'(d)=1.54d-1.32=0

1.54d-1.32=0

so, we get diameter as

d=\frac{6}{7}inch..............Answer

6 0
3 years ago
What is the measure of KPN?<br> A. 35°<br> B. 50°<br> C. 60°<br> D.65°<br> E. 70°
luda_lava [24]

Answer:

Option (B)

Step-by-step explanation:

From the picture attached,

NL and KM are the two lines intersecting at a point P.

Therefore, ∠KPN ≅ LPM [Vertical angles]

In ΔPLM,

m∠LPM + m∠PML + m∠PLM = 180° [Property of a triangle]

m∠LPM + 70° + 60° = 180°

m∠LPM + 130° = 180°

m∠LPM = 180° - 130°

m∠LPM = 50°

Therefore, m∠KPN = 50° [vertical angles]

Option (B) will be the correct option.

3 0
3 years ago
The points in the table lie on a line. find the slope of the line.
MatroZZZ [7]

Answer:

  -7/6

Step-by-step explanation:

The slope formula can be used with any pair of points.

  m = (y2 -y1)/(x2 -x1)

  m = (1 -8)/(-2 -(-8)) = -7/6

The slope of the line is -7/6.

5 0
2 years ago
What is 3 3/4×2 4/5 in simplest form
Archy [21]

Answer:

10.5 = 10 1/2

Step by step:

(3 3/4)(2 4/5)

= 15/4(2 4/5)

=15/4(14/5)

=21/2

=10 1/2


4 0
3 years ago
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