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Mumz [18]
3 years ago
6

Let W= { (x, y, z) |x=1|; y, z ∈ℝ } Prove that W is a subspace of ∈ℝ How can I resolve this ?

Mathematics
1 answer:
Nataly [62]3 years ago
5 0

Answer:

W is not a subspace.

Step-by-step explanation:

Notice that (-1,2,2) and (-1,5,3) are both elements of W. Because its x coordinate, x = -1, satisfy the condition |x| = 1.

but (-1,2,2) + (-1,5,3) = (-2,7,5) do not belongs to W. Because its first coordinate, x =-2, do not satisfy |x| = 1.  

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Which expression is equivalent to -8(10x-3)<br> (SHOW WORK)
oksian1 [2.3K]

Answer:

240

Step-by-step explanation:

-8(10×-3)

(10×3)=30

30×-8=240

4 0
3 years ago
Write an equation for each condition listed.
Svetlanka [38]
Look for the y-intercept
since we know the slope is 3 we just going to plug in
-5=3(1)+y
-5-3=y
so the y-intercept is 8 now you can find the equation
y=3x-8
6 0
3 years ago
In a certain store, the regular price of a refrigerator is$600. How much money is saved by buying this refrigeratorat 20 percent
Ira Lisetskai [31]

Correct option is A. Money saved is  ′ $6 ′ .

Given

Regular price of the refrigerator = $600

i) Buying the refrigerator at 20 percent off regular price

Final Discount in this case = 20% (Regular price of the refrigerator)

= 20 / 100 × 600

​= $120

ii)  Buying it on sale at 10 percent off regular price and an additional 10 percent off sale price

Discount for the sale = 10% (Regular price of the refrigerator)

=  10/100  × $600

= $60

Sale price of the refrigerator = Regular price of the refrigerator − Discount for sale

= $600 − $60

= $540

Final Discount in this case = 10% (Sale price of the refrigerator)

= 10/100​  × $540

= $54

Money saved if we buy as (case−i) = (Final Discount in (case.i)) − (Final Discount in (case.ii))

= $60 − $54

= $6

Therefore, Money saved is  ′ $6 ′ .

To learn more about percentage from given link

brainly.com/question/24304697

#SPJ4

4 0
1 year ago
The volume of this storage container is 1,400 cubic inches. The length is 20 inches and the width is 14 inches.
Vitek1552 [10]

Answer:

<h2>A) Height is the missing measurment.</h2><h2 /><h2> B)  1,400= 20 × 14 × H</h2><h2 /><h2>C) 1400 ÷ H = 280</h2>

Step-by-step explanation:

A) Length × Width × Height

B) V is 1,400

    L is 20

    W is 14

    H is unknown so use a variable

C) 20 × 14= 280.

8 0
3 years ago
Read 2 more answers
Katrina is reading a book that is 400 pages long. She has read 340 pages so far.
Svetach [21]
\frac{340}{400}=\frac{340 \div 4}{400 \div 4}=\frac{85}{100}=85\%

Katrina has read 85% of her book.
7 0
3 years ago
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