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Svetlanka [38]
4 years ago
8

What plus what equals 160

Mathematics
1 answer:
Paladinen [302]4 years ago
3 0
80 plus 80 is equal to 160. It's like 8 plus 8 equals 16, just add a zero to the end to each numbers it's easier to think that way
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Let f(x)=-3x-7 Abe g(x)=4x-5 find (f•g)(-3)
LiRa [457]

Answer:

272

Step-by-step explanation:

note that (f • g)(x) = f(x) × g(x) = (3x - 7)(4x - 5)

To evaluate substitute x = 3 into (3x - 7)(4x - 5)

(f • g)(- 3) = (- 9 - 7)(- 12 - 5) = - 16 × - 17 = 172


5 0
4 years ago
The reciprocal of -3/5 is 5/3. True or false
Mice21 [21]

Answer:

False

Step-by-step explanation:

Reciprocal of -3/5  is  (-5/3)

Reciprocal of a fraction is flipping its numerator and denominator. Sign won't change.

3 0
4 years ago
What is the correct answer in the photo A. B. C. or .D please explain why
balu736 [363]

Answer:

I think its D)

Step-by-step explanation:

7x−3y+2=0

Add -7x to both sides.

7x−3y+2+−7x=0+−7x

−3y+2=−7x

Add -2 to both sides.

−3y+2+−2=−7x+−2

−3y=−7x−2

Divide both sides by -3.

−3y /−3  =  −7x−2 /−3

which equals d)

I also use this app to convert equations to slope-intercept and it showed me this

8 0
3 years ago
__,__, 8.16,32,64 what is the arithmetic sequence?
seraphim [82]

Answer:

2,4,8,16,32,64

Step-by-step explanation:

There are a couple of ways one could approach this. The goal is to find out the factor by which the numbers are increasing. Looking at going from 8 -> 16, we have either added 8, or doubled 8. So the factor is either +8 or x2. Going from 16 -> 32, adding 8 no longer holds true, while multiplying by 2 (doubling 16) does. To confirm what we have found, we can further check our math by using the final two numbers, 32 -> 64, to confirm that the sequence pattern is to double the current number to achieve the next number.

Working backwards, we can half each number to find out the first two numbers in the sequence. 64/2 = 32, 32/2 = 16, 16/2 = 8, 8/2 = 4, 4/2 = 2

8 0
3 years ago
Many people think that a national lobby's successful fight against gun control legislation is reflecting the will of a minority
Ierofanga [76]

Answer:

At least 653 citizens need to be sampled.

Step-by-step explanation:

The following formula is used to compute the minimum sample size required to estimate the true proportion who are in favor of gun control legislation  within 5% margin of error:

n≥ p×(1-p) × (\frac{z}{ME} )^2 where

  • n is the sample size
  • p is the sample proportion of people who are in favor of gun control legislation (\frac{2250}{4000}=0.5625
  • z is the corresponding z-score for 99% confidence level (2.575)
  • ME is the margin of error in the estimation (5% or 0.05)

Putting numbers in the formula

n≥ 0.5625×0.4375 × (\frac{2.58}{0.05} )^2 ≈652.7

n needs to be<em> at least 653</em> to provide this equation.

4 0
3 years ago
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