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AysviL [449]
3 years ago
12

PLZ HELP ME! THIS IS A GRADE! NO LINKS!

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

see explanation.

Step-by-step explanation:

2(10 * 4 * 7) is a surface area.

7 * 4 * 10 is volume.

2(10 * 4 + 10 * 7 + 4 * 7) is surface area.

10 + 4 + 7 is neither.

2 * 7 * 4 + 2 * 10 * 7 + 2 * 4 * 10 is neither.

hope this helps.

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Please need help :) Math
o-na [289]
(y-k)²/a² + (x-h)²/b² = 1
Vertices being : A(0,1) & B(0, - 9), means that h=0

Let's calculate k: Af₁ + Af₂ = |2+8| = 2a = 10 → a=5 (f₁ and f₂ = focii)
1) a = 10 (WRONG) since a =5
2) h=3 (WRONG) since h =0
3) k =0 (WRONG) since k =5
4) b = 4 RIGHT; PROOF:
we know that : c² = a² - b²
c= 3 & a = 5 then → 3² = 5² - b²
9 = 25 - b²
b² = 25-9 = 16 and b = 4
5 0
3 years ago
00 pts
777dan777 [17]

Answer:

a_n=6\cdot (-1)^n

Step-by-step explanation:

<u>Alternating Sequences</u>

A sequence whose terms alternate in the sign is called an alternating sequence.

The given sequence consists of the numbers -6 and 6 in infinite alternation.

Such sequences can be expressed as equations of the form

a_n=a\cdot (-1)^m

Where a is the constant absolute value of each term and m is an expression adequately arranged to reproduce the alternation of signs.

Since the sign is minus for odd terms, and plus for even terms, m=n is a good expression for m. Thus:

a_n=6\cdot (-1)^n

5 0
3 years ago
What is the value of | -5 | ?
lawyer [7]

Answer:

if u mean absolute value it is 5.

the value is always positive an dmeans how far is it from the numberline

Step-by-step explanation:

4 0
3 years ago
Mr. Smith and Mr. Kelly are business partners. They agreed to divide the profits in the ratio of 3: 2. The
VARVARA [1.3K]
Me smith made £6 Whilst Mr Kelly made 4
7 0
3 years ago
Read 2 more answers
3x+2y-3x pls help me
Jobisdone [24]

Answer:

x + 2y

Step-by-step explanation:

so 3x + 2y - 3x, group the like terms 3x - 3x = x

So x + 2y, i think i did that right

6 0
3 years ago
Read 2 more answers
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