All categories

3 years ago

Cho A= [ -4;4] B= ( 1;7] Xác định A B

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

4 0

To find the intersection of A and B figure who has the bigger lower bounds and smaller upper bounds out of A and B.

The lower bound of A is -4 while the lower bound of B is (but not including) 1. So the lower bound will be (1.

The upper bound of A is 4 while the upper bound of B is 7. So the resulting upper bound will be 4].

Put these together and get (1,4].

Hope this helps :)

You might be interested in

The phrase "4 more than twice a number" becomes '2n + 4'.

andrew11 [14]

I mean, this isn't a question but its true?

3 0

3 years ago

Graph the image of this figure after a dilation with a scale factor of 2 centered at the origin.

den301095 [7]

Answer:

Here, the coordinates of the given rectangle are (1,2), (3,2), (1,-1) and (3,-1)

In the dilation by the scale factor k with centered at origin,

$(x,y)\rightarrow (kx,ky)$

Thus, If the dilation occurs by the scale factor of 2 with centered at origin,

New coordinates of the Rectangle are,

$(1,2)\rightarrow (2\times 1, 2\times 2)$

$(3,2)\rightarrow (2\times 3, 2\times 2)$

$(1,-1)\rightarrow (2\times 1, 2\times -1)$

$(3,-1)\rightarrow (2\times 3, 2\times -1)$

Thus, the coordinates of new rectangle are,

(2,4), (6,4), (2,-2) and (6,-2)

3 0

3 years ago

Read 2 more answers

A new toy store had expenses of $50,000 for designing and building the shelves and counters and $150,000 for the first year’s to

Naya [18.7K]

The answer would be C.

3 0

4 years ago

What percent is equal to the decimal 0.13? A. 0.013% B. 1.3% C. 13% D. 130%

mario62 [17]

0.13 <== the decimal is in the tenth place.

We could also say it is equal to

13/100

Or,

"C" 13%

I hope this helps!
~kaikers

3 0

3 years ago

Read 2 more answers

The angle of depression from the top of a flag pole to a point on the ground is 30°. If the point on the ground is 75 feet from

Cerrena [4.2K]

Answer:

Height of flag pole to the nearest foot is 43 feet

Step-by-step explanation:

In the diagram we have flag pole AB and C is the point on the ground.

It is given that angle of depression is 30°

and the distance of the point C from the base B is 75 feet

so we have

BC= 75 feet

∠C = 30°

AB= h feet

now in right ΔABC

$tan C = \frac{opposite \ side }{base} \\tan C=\frac{AB}{BC}$

now we plug AB= h , ∠C= 30° and BC =75

$tan 30= \frac{h}{75}$

$75 tan30 = h$ ( multiply both sides by 75)

$h= 75 tan 30 =75 (0.5773)\\ h= 43.3 feet\\$

Height of flag pole to the nearest foot is

h= 43 feet

7 0

4 years ago

Read 2 more answers