Answer:
x+12=20
Step-by-step explanation:
"A number" is referring to x and when you subtract a negative number you are actually adding.This equals 20 so you right it as x+12=20
Answer:
In a geometric sequence, the common ratio between consecutive terms is constant.
Step-by-step explanation:
In a geometric sequence, the common ratio between consecutive terms is constant.
The n-th term of a geometric sequence with first term
and common ratio
is represented by the formula:

For example,

As the common ratio 'r' between consecutive terms is constant.
So, the common ratio between consecutive terms is constant i.e. -3. Thus, it is a geometric sequence with a common ratio -3.
Answer:
x=18.9
Step-by-step explanation:
tan48=x/17
17tan(48)=x
18.9=x
To find the perimeter just add the sides
5+5+6 = 16
To find the area, you need to use the following formula

we know b but we need to find the height. We can find the heigh by using pythagorean theorem

height =
h = height = 4

Cost:
6.00 per cm^2 = 6.00 x 12 = $72.00 dollars
The set A satisfying the given inequality is A = (-
, -10].
<h3>What are some properties of an inequality relation? </h3>
Following are some facts which are true for an inequality relation:
- Equal numbers can be added or subtracted from both sides of an inequality without affecting the inequality sign.
- The Inequality sign is unchanged if both sides are multiplied or divided by a positive number, but when multiplied or divided by a negative number the inequality sign is reversed.

Since y ∈ B, -2 ≤ y ≤ 7. So,

The set {-x | inequality (1) holds ∀ y ∈ B} is [10,
) i.e.
10 ≤ -x ≤
.
Multiplying -1 throughout gives
-10 ≥ x ≥ -
.
x, thus, lies in the range A = (-
, -10}.
Learn more about the inequality here.
brainly.com/question/17801003
Disclaimer: The question was incomplete. Please find the full content below.
<h3>Question </h3>
Find the set A such that for x ∈ A

∀y ∈ B = {y ∈ R | -2 ≤ y ≤ 7}.
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