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Ivanshal [37]
3 years ago
14

At a pet store, Davina counted 12 parrots out of 20 birds. Which is an equivalent ratio of parrots to birds at the pet store? 2:

3 3 to 2 StartFraction 5 Over 3 EndFraction 3 to 5
Mathematics
2 answers:
Mazyrski [523]3 years ago
3 0

Answer:

3 to 2

Hope it helps xD

RUDIKE [14]3 years ago
3 0

Answer:

its B pls give brainleist

Step-by-step explanation:

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Element X decays radioactively with a half life of 11 minutes. If there are 870 grams
exis [7]

Answer:

27.5 minutes

Step-by-step explanation:

Using,

R/R' = 2ᵃ/ᵇ------------------ Equation 1

From the equation,

R = mass of Element X before radioactive decay, R' = mass of element X after radioactive decay, a = Time taken, b = half life.

Given: R = 870 grams, R' = 154 grams, b = 11 minutes.

Substitute these values into equation 1

870/154 = 2ᵃ/¹¹

(870/154)¹¹ = 2ᵃ

Solve for a

2ᵃ = (5.649)¹¹

2ᵃ = 187061.26

Taking the logarithm of both side,

Log2ᵃ = Log(187061.26)

⇒ a = log(187061.26)/log2

a = 8.272/0.301

a = 27.5 minutes

5 0
2 years ago
Find the number of real number solutions for the equation. x2 + 5x + 7 = 0
horsena [70]
X=-1
-1x2 + 5x-1 +7 = 0
-7+7 =0
0=0
6 0
3 years ago
HELP!! WILL GIVE BRAINLIEST!!!
otez555 [7]

Answer:

David needs 7-8 short term rentals monthly to match revenue from a lease. College students need long term housing so he should lease his home.

Step-by-step explanation:

8 0
3 years ago
Please help ASAP I NEED THIS TOMORROW!!!
Mama L [17]
She will pay 90 because the income is 5 times greater
(answer o number one)
7 0
2 years ago
Helpppppp meeeeeee plz ​
V125BC [204]

60 total fourth graders and 43 are girls. To find the number of boys, subtract.

60 - 43 = 17 boys

If 5 girls were absent, subtract.

43 - 5 = 38 girls present

If 4 boys were absent, subtract.

17 - 4 = 13 boys present

Therefore, there were 13 boys present.

Best of Luck!

6 0
2 years ago
Read 2 more answers
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