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Yuki888 [10]
2 years ago
13

What is the value of the sum 4 + 9

Mathematics
2 answers:
natta225 [31]2 years ago
8 0
13 is the sum of your equation!
valentina_108 [34]2 years ago
7 0

Answer:

13

Step-by-step explanation:

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Select the correct answer from each drop-down menu. The graphs below show the number of faulty products, y, produced by a compan
BARSIC [14]

Answer:

whats the answers available?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Mr. Stewart has 26 students in his class. Ten of his students are girls. If Mr. Stewart writes each student's name on a small st
swat32

Answer:

8/13

Step-by-step explanation:

<em>Step 1 : Write all the data</em>

Total number of students = 26

Number of girls in class = 10

Number of boys in class = 26-10 = 16

<em>Step 2 : Find the probability</em>

Probability of pulling out a boy's name = <u>number of boys in class</u>

                                                             Total number of students in class

= 16/26

<em>Simplify :</em>

16/26 = 8/13

!!

6 0
4 years ago
Water flows back and forth between a small and large tank. When water is moving into a tank the flow rate is positive, and when
Lady_Fox [76]

Answer: C. 100

Step-by-step explanation:

If  the large tank is flowing at a constant rate of  -6 per minute then we have to know that the water is moving from the tank. So is asking how many water will be left in the tank after 25 minutes.

You could use the equation

y = -6x  + 250  where y is the amount of water left in the tank and x is the number of minutes.

So if x is 25 then plot it in and solve for y.

y = -6(25) +250

y = -150 +250

y= 100  

6 0
4 years ago
Read 2 more answers
The equation of a circle is given by x^2-4x+y^2+6y=12 x 2 − 4 x + y 2 + 6 y = 12 . Choose the answer set that matches each coord
postnew [5]

Answer:

The answer is A.  Check the picture attached.

Step-by-step explanation:

3 0
4 years ago
A sample of a radioactive substance decayed to 97% of its original amount after a year. (Round your answers to two decimal place
Alborosie

Answer:

23 years

Step-by-step explanation:

Step 1: Calculate the rate constant (k) for the radioactive decay

A radioactive substance with initial concentration [A]₀ decays to 97% of its initial amount, that is, [A] = 0.97 [A]₀, after t = 1 year. Considering first-order kinetics, we can calculate the rate constant using the following expression.

ln [A]/[A]₀  = - k.t

k = ln [A]/[A]₀ / -t

k = ln 0.97 [A]₀/[A]₀ / -1 year

k = 0.03 year⁻¹

Step 2: Calculate the half-life of the substance

We will use the following expression.

t_{1/2} = ln2/ k = ln 2 / 0.03 year⁻¹ = 23 years

4 0
3 years ago
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