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krek1111 [17]
2 years ago
15

QUICK whoever gives correct answer will get brainliest thank you.​

Mathematics
1 answer:
kenny6666 [7]2 years ago
6 0

Answer: B

Step-by-step explanation:

For a relation to be a function, each input value can only have one corresponding output.

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Solve each pair of simultaneous equations by substitution method
WARRIOR [948]

Answer:

x = 1       y = -4

Step-by-step explanation:

- Plug the value of y into the other equation.

x + 3y = -11

x + 3(-4x) = -11

x - 12x = -11

-11x = -11

x = 1

- Now substitute the value of x into any equation.

y = -4x

y = -4(1)

y = -4

3 0
2 years ago
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A toxic radioactive substance with a density of 7 milligrams per square centimeter is detected in the ventilating ducts of a nuc
uysha [10]
For this case we have an equation of the form:
 y = A * (b) ^ t
 Where,
 A: initial amount
 b: decrease rate
 t: time in years.
 Substituting values we have:
 7 = A * (0.5) ^ ((1/20) * t)
 For t = 45 years we have:
 7 = A * (0.5) ^ ((1/20) * 45) 
 Clearing A:
 A = 7 / ((0.5) ^ ((1/20) * 45))
 A = 33.3
 Answer:
 
the density of the substance when it was deposited 45 years ago was:
 
A = 33.3 milligrams per square centimeter
5 0
3 years ago
The y-intercept of the line whose equation is 2x + 5y = 8
Ymorist [56]
2x+5y=8
5y=-2x+8
y=-2/5x+8/5. As a result, the y-intercept is 8/5 or 1 3/5. Hope it help!
5 0
3 years ago
Find the measure of arc FV
stepladder [879]

Answer:

FV = 60

Step-by-step explanation:

VG => 65 × 2 = 130

FH major arc=> 119 × 2 =  238

<u>FH major arc -  GH = FG</u>

FG => 238 - 168 = 70

<u>VG - FG major arc = FV</u>

FV => 130 - 70 = 60

4 0
3 years ago
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Divide £24 in ratio 3:5
Nadya [2.5K]
When i divide into ratio, i like to think of them as units:

so 24 will be divided into units, where the first thing gets 3 units and the second 5 units. In total those are 3+5=8 units.


so each unit will have 24/8=4

so the division into the two numbers is like this: the first one gets 3 units (3*4=12) and the second 5 (5*4=20)
so it's 12:20. 


4 0
3 years ago
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