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3 years ago

L 1.3.5 Quiz: Using Models

Mathematics

1 answer:

Archy [21]3 years ago

3 0

Answer:

2 windows

Step-by-step explanation:

Scale is the ratio of model and the actual architecture.

Scale defines if the size of model is x , then what will be the size of actual body.

Scale is only used to determine Size of architecture.

Scale does affect the design or shape both model and architecture.

Shape or design for model and actual remains similar.

Example if any model triangle has three sides , then its no. of side will not change with the ratio of scale. Its size will only change.

____________________________________________

Since in the model, tree house has two windows which pertains to the design of the house, it is not concerned with size of house. Hence, number windows has nothing to do with scale and hence

number of window in the real tree house will two as well.

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Find the area of the parallelogram that has a base of 2 1/2 feet and a height of 1 1/4 feet

blagie [28]

Answer:

3 1/8 ft²

Step-by-step explanation:

The area of a parallelogram is equal to the product of its base and its height.

b × h

2.5 × 1.25

= 3.125

The area is 3.125 feet².

4 0

4 years ago

In an arithmetic sequence, t4 + t5 + t6 = 300, and t15 +t16+ t17 = 201. Find t18.

stiks02 [169]

In an arithmetic sequence:
Tn=t₁+(n-1)d

t₄=t₁+(4-1)d=t₁+3d
t₅=t₁+(5-1)d=t₁+4d
t₆=t₁+(6-1)d=t₁+5d

t₄+t₅+t₆=(t₁+3d) +(t₁+4d)+(t₁+5d)=3t₁+12d

Therefore:
3t₁+12d=300 (1)

t₁₅=t₁+(15-1)d=t₁+14d
t₁₆=t₁+(16-1)d=t₁+15d
t₁₇=t₁+(17-1)d=t₁+16d

t₁₅+t₁₆+t₁₇=(t₁+14d)+(t₁+15d)+(t₁+16d)=3t₁+45d

Therefore:
3t₁+45d=201 (2)

With the equations (1) and (2) we make an system of equations:

3t₁+12d=300
3t₁+45d=201

we can solve this system of equations by reduction method.

3t₁+12d=300
-(3t₁+45d=201)
-----------------------------
-33d=99 ⇒d=99/-33=-3

3t₁+12d=300
3t₁+12(-3)=300
3t₁-36=300
3t₁=300+36
3t₁=336
t₁=336/3
t₁=112

Threfore:

Tn=112+(n-1)(-3)
Tn=112-3n+3
Tn=115-3n

Now, we calculate T₁₈:

T₁₈=115-3(18)=115-54=61

Answer: T₁₈=61

5 0

3 years ago

How do I determine which is y=-1/3x+2?

Jlenok [28]

Step-by-step explanation:

This is a linear equation in slope intercept form which is

$y = mx + b$

where m is the slope and b is the y intercept.

The equation

$y = - \frac{1}{3} x + 2$

Has a slope of -1/3 so this means that the slope will be decreasing. A negative linear equation increases as we go left. and decreases as we go right. The y intercept is 2. So this means the graph must pass through (0,2) and when x=0, y must be 2.

In other words, look for a line that the y values increase as we go left and decrease we go right. Also look for a point (0,2) and make sure the graph pass through it.

6 0

3 years ago

The length of a rectangle is 2 more than twice the width. The area of the

vlada-n [284]

Answer: w=5 , L= 2+2(5)=12

Step-by-step explanation:

L=2+2W

A= 60

LxW=60, now we will replace the L

(2+2W)(W)=60 we multiply

2w^2+2w=60

2w^2+2w-60=0 we divide by 2 the equation so we can work easier

w^2+w-30=0

find out w using the quadratic equation

we will get 2 solution,

w=5 and another solution is -6, which is not valid, as the side can not be negative

8 0

3 years ago

ZX and zy or supplementary angles. zy measures 49 degrees what is the measure of ZX

Svetach [21]

Answer:

131˙

Step-by-step explanation:

Supplementary angles are angles that add up to 180˙. If you subtract 49 from 180, you get 131.

Brainliest? Maybe?

8 0

3 years ago