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SIZIF [17.4K]
3 years ago
8

What is the value of f(X)=3x-12 for X=9

Mathematics
1 answer:
Phantasy [73]3 years ago
8 0
F(X)=3x-12 Substitute 9 for x. f (9)=3 (9) -12 Multiply 9 by 3. F (9)= 27 -12 Subtract Final Answer: 15
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A doctor compiles a numbered list of all his 350 patients. He selects every 25th patient to receive a survey after
Vinil7 [7]

Answer: This does not represent an SRS because each group of patients chosen does not have an equally likely chance of being chosen.

4 0
3 years ago
Rahima goes jogging on a course that is 2.75kilometers long. If she completes the full course every morning, how many kilometers
Arada [10]

Answer:

<h2>19.25km</h2>

Step-by-step explanation:

Step one:

given data

we are told that the distance that Rahima covers on a daily is 2.75km long

we also know that a week has 7 days that is Mon-Sunday

Required

the total distance for a week

Step two:

Hence the total distance covered for  7 days is

=2.75*7

=19.25km

<em>Simply multiply the distance covered in a day by 7 to get the distance covered in a week </em>

6 0
3 years ago
Read 2 more answers
I need help for this question please!!!!
Arisa [49]

Answer:

a. 35 degrees

b. 145 degrees

Step-by-step explanation:

a. Since the two base angles of this triangle are congruent, we can conclude that the triangle is <em>isosceles, </em>which means that the two base angles and sides are congruent.

Now, knowing that information, we can subtract 110 from 180 (the sum of all interior angles in a triangle) and we get 70. But this isn't our answer. This is the sum of both base angles. Since the base angles are congruent, we can divide the 70 by 2 to get the measure of ONE base angle, which is 35 degrees.

b. There are two approaches to solve this problem. I have worked both out.

1) We can use the Exterior Angle Theorem, which states that the sum of the interior angles is equal to the exterior angle. We can add 110 to 35, so we get 145 degrees as the measure of <1.

2) The second approach is supplementary angles. Since we see that one of the base angles and <1 is on the same line, we can subtract 35 from 180 to find the measure of <1 to get 145 degrees.

Either way you use, you get the correct answer. Hope this helped!

6 0
3 years ago
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navik [9.2K]

Answer:

slope rise 3 run 2 1/2

Step-by-step explanation:

if you start from the bottom and if you start from the top it's -3 and -2 1/2

8 0
4 years ago
Read 2 more answers
Two angles in a triangle equal 20 and 130. What is the measure of the third angle?
mezya [45]
C because they all have to add up to 180 and 20+130=150 and 180-150=30
4 0
4 years ago
Read 2 more answers
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