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katen-ka-za [31]
3 years ago
6

An unknown element has 18 protons. How many neutrons does this atom have?

Mathematics
1 answer:
Vikentia [17]3 years ago
4 0
The element has 18 neutrons.
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Barney has 16 1/5 yards of fabric. To make an elf costume, he needs 5 2/5 yards of fabric. How many costumes can Barney make?
AURORKA [14]
Total yards if fabric /fabric needed to make an elf costume
therefore 16 1/5 ÷ 5 2/5
=3
so Barney can make 3 costumes out of 16 1/5 yards of fabric
8 0
4 years ago
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Please answer this triangle question (see photo)
Juliette [100K]
The picture below is my answer of what I have seen.Thank you.

4 0
3 years ago
How do you read A' and what does it mean?<br><br>​
Arisa [49]

Answer:

Well, in math..

for example, There is triangle ABC, and ur translating it 3 units to the right on a grid...

The new triangle will be called A'B'C' cause its a new one... and to differenciate from the two, to not get mixed up, between them

Stepby-step explanation:

Hope I helped...

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3 0
3 years ago
54% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability
Degger [83]

Part B is not clear and the clear one is;

P(X ≥ 6)

Answer:

A) 0.238

B) 0.478

C) 0.114

Step-by-step explanation:

To solve this, we will make use of binomial probability formula;

P(X = x) = nCx × p^(x)•(1 - p) ^(n - x)

A) 54% of U.S. adults have very little confidence in newspapers. Thus;

p = 0.54

10 random adults are selected. Thus;

P(X = 5) = 10C5 × 0.54^(5) × (1 - 0.54)^(10 - 5)

P(X = 5) = 0.238

B) P(X ≥ 6) = P(6) + P(7) + P(8) + P(9) + P(10)

From online binomial probability calculator, we have;

P(X ≥ 6) = 0.2331 + 0.1564 + 0.0688 + 0.01796 + 0.0021 = 0.47836 ≈ 0.478

C) P(x<4) = P(3) + P(2) + P(1) + P(0)

Again with online binomial probability calculations, we have;

P(x<4) = 0.1141 ≈ 0.114

5 0
3 years ago
B)the LCM of three numbers is 24 and their G.C.D is 4. If two<br>find the other number​
kicyunya [14]

6

Step-by-step explanation:

because 6*4=24, so the G.C.D is 4 and the other number is 6

4 0
3 years ago
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