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harkovskaia [24]
3 years ago
13

Solve for y. x + y = -3

Mathematics
2 answers:
HACTEHA [7]3 years ago
6 0
The answer is. Y=-3+x
aksik [14]3 years ago
3 0

Answer:

\boxed {y = -x - 3}

Step-by-step explanation:

Solve for the value of y:

x + y = -3

-Subtract both sides by x:

x - x + y = -3 - x

\boxed {y = -x - 3}

Therefore, the final answer is y = -x - 3.

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The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per
My name is Ann [436]
Given:
Confidence level = 90%
mean = 71 beats per minute
standard deviation = 6 beats per minute

margin of error = z * δ / √n

where : δ - population of the standard deviation, n is the sample size ; z is the appropriate z value.

90% confidence level = 1.645 in z-value

margin of error = 1.645 * (6/√80) = 1.645 * (6/8.94) = 1.645 *  0.671 = 1.104

The margin of error is 1.10
6 0
3 years ago
Read 2 more answers
The amount y (in grams) of the radioactive isotope fermium-253 remaining after t hours is y=a(0.5)t/72, where a is the initial a
almond37 [142]

Answer:

Per hour decay of the isotope is 0.96%.

Step-by-step explanation:

Amount of radioactive element remaining after t hours is represented by

y=a(0.5)^{\frac{t}{72}}

where a = initial amount

t = duration of decay (in hours)

Amount remaining after 1 hour will be,

y=a(0.5)^{\frac{1}{72} }

y = 0.9904a

So amount of decay in one hour = a - 0.9904a

                                                      = 0.0096a gms

Percentage decay every hour = \frac{\text{Amount of decay}}{\text{Initial amount}}\times 100

                                                  = \frac{0.0096a}{a}\times 100

                                                  = 0.958 %

                                                  ≈ 0.96 %

Therefore, per hour decay of the radioactive isotope is 0.96%.

7 0
4 years ago
In 8 years, Sophia's age will be 21 years old. Let x represent Sophia's current
Aloiza [94]

Answer:

a. x+8=21

b. x = 13

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I need help please no links I will report
stellarik [79]

Answer: $1.45

Step-by-step explanation:

We start by subtracting the change from how much she payed for.

d = dollars | g = goldfish

16d - 0.05d = 15.95d

Then we divide by the goldfish

\frac{15.95d}{11g} = 1.45d

Our answer is 1.45!

<u>Also, warning, the people who go into the comments saying to download something from bitly, do not do it. They are viruses and will not get the answer, please only report their answer and ignore them.</u>

7 0
3 years ago
Please help me with this​
aliya0001 [1]

Answer and Step-by-step explanation:

1/2x is positive and 2 is negative, so they cross each other perpendicularly, and the equation needs to be at -13 y, 0 x

The answer is y = -2x - 13

#teamtrees #WAP (Water And Plant)

7 0
3 years ago
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