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alexandr402 [8]
3 years ago
15

Sally is 2 years older than three times jim’s age. jim is 4 years old

Mathematics
1 answer:
andre [41]3 years ago
4 0
S = Sally's age
J = Jim's age

S = 2 + 3j      Plug in 4 for j
S = 2 + 3(4)   Multiply
S = 2 + 12     Add
S = 14

Sally is 14 years old.
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How do I solve this problem? ​
natulia [17]

Step-by-step explanation:

you know the formulas ?

the area of a circle is : pi×r²

the circumference of a circle is : 2×pi×r

with r being the radius, which is half of the diameter.

so, here, r = 10/2 = 5 m

area = pi×r² = pi×5² = pi×25 or 25×pi m²

circumference = 2×pi×r = 2×pi×5 = 10×pi m

for the approximation we make the calculations with pi on the calculator and round to the nearest hundredth.

area = 25×pi ≈ 78.54 m²

circumference = 10×pi ≈ 31.42 m

5 0
3 years ago
What is the domain of the function f(x)= x + 1 / x^2 - 6x + 8?
VARVARA [1.3K]
Answer:
all real numbers except 4 and 2

Explanation:
The given function is: 
f(x) = \frac{x+1}{x^2-6x+8}

Domain of the function is defined as the values of x that can be used to substitute in the function.

We know that any fraction cannot have a zero in its denominator. Because if this happens, then the fraction would be undefined.

This means that in the given function, we cannot substitute with any value for x that makes the denominator a zero.

Now, we will get the zeroes of the denominator as follows:
x² - 6x + 8 = 0
(x-4)(x-2) = 0
either x-4 = 0 ...........> x = 4
or x-2 = 0 .............> x = 2

Based on the above, we can substitute with any value for x excluding 4 and 2.

This means that the domain of the function is any real real number except 4 and 2

Hope this helps :)
7 0
3 years ago
A website that sells movie tickets can tell what devices are used to access their site and make purchases. The manager of the we
LiRa [457]

Answer:

The best estimate for the proportion of ticket buyers that make purchases using their smart phones is 0.45.

Step-by-step explanation:

We take the estimate from the website, and expand for all buyers, to find the proportion that use their smartphones.

400 users of the website were randomly sampled from the existing database and 180 were found to have used their smart phones.

180/400 = 0.45

The best estimate for the proportion of ticket buyers that make purchases using their smart phones is 0.45.

4 0
2 years ago
Help Fast Show WORK and. NO links <br> 5f = -75 check your solutio\
pantera1 [17]

Answer:

f= -15

Step-by-step explanation:

u just have to divide

-75/5= -15  so f equal -15

3 0
3 years ago
Read 2 more answers
3
nirvana33 [79]

Answer:

njrdbtgawewct

3 0
3 years ago
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