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2 years ago

Find. The unit vector. Multiple choice

Mathematics

1 answer:

lutik1710 [3]2 years ago

6 0

Answer:

Step-by-step explanation:

6i = 3/5i

8j = 4/5j

3/5i + 4/5j

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The safety inspector in a large city wants to estimate the proportion of buildings in the city that are in violation of fire cod

storchak [24]

Answer:

Check Explanation.

Step-by-step explanation:

The sample will be a representative of the entire build us in the city.

For a sample size 35, 3 have fire code violations, hence, the proportion of houses with fire code violations = (3/35) = 0.0857 = 8.57 %

The uncertainty in the estimate is given in the form of standard error.

Standard error = √[(p(1-p)/n]

n = sample size = 35, p = 0.0857, 1 - p = 0.9143

Standard error of the sample = √(0.0857×0.9143/35) = 0.1616

In terms of the population, (0.1616/35) = 0.00462

Proportion of buildings with fire code violations = (8.57 ± 0.462) %

8 0

3 years ago

I WILL MARK BRAINLIEST!!!!!!

Firdavs [7]

For this , you use the distance formula
. based on the graph, use points (0,6) and (7,-2), plug them into the formula to get
$\sqrt{113}$
and you get B, 10.63

5 0

4 years ago

Read 2 more answers

Felicia places a rectangular rug that measures 10 feet by 11 feet in a triangular room with a base of 30 feet and height of 22 f

arsen [322]

Answer:

1. Area of rectangular rug is $110 ft^{2}$

2. Area of triangular room is $330ft^{2}$

Step-by-step explanation:

This problem bothers on the mensuration of flat shapes, rectangle and triangle.

step one

let us start by solving for the area of the rectangular rug

given data

Area A = ?

Length l = 11 ft

Width w= 10 ft

we know that the area of a rectangle is expressed as

$Area=Length * Width$

substituting our given data we have

$Area= 11*10\\Area= 110 ft^{2}$

step two

let us solve for the area of the triangular room

given data

Area A = ?

base b = 30 ft

height h= 22 ft

we know that the area of a triangle is expressed as

$Area= \frac{1}{2} *base* height\\$

substituting our given data we have

$Area= \frac{1}{2} * 30* 22\\Area=\frac{660}{2} \\Area= 330 ft^{2}$

8 0

3 years ago

5. Use the vertical method to multiply two trinomials.

Novay_Z [31]

Answer:

i think the answer is 19x^-2x+2

4 0

2 years ago

Read 2 more answers

12 of 18

melisa1 [442]

Answer:

3x+3y and distributive property

Step-by-step explanation:

It is given that

Gretchen buys three bags of apples = 3X

Hayley buys three bunches of bananas = 3Y

As it is also mentioned that it first it is multiplied and then it is added

So, the expression for determining the total number of fruit pieces is

3X + 3Y

And, this expression denotes the distributive property in which we multiplied the each variable and then added it

7 0

3 years ago