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kifflom [539]
3 years ago
10

Humberto evaluates the expression 4t² for t=3. what is the answer??

Mathematics
1 answer:
Artist 52 [7]3 years ago
7 0
4t<span>²
= 4(3)</span><span>²
= 4 x 9 
= 36</span>
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Anyone wanna fight? 12x76-8(456-98)=
Soloha48 [4]

Answer:

-1952

Step-by-step explanation:

5 0
2 years ago
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Select the correct answer.<br> What is the solution to the equation?
Ierofanga [76]

Answer:

B

Step-by-step explanation:

\sqrt{x} + 6 = x ( subtract 6 from both sides )

\sqrt{x} = x - 6 ( square both sides )

x = (x - 6)² ← expand using FOIL

x = x² - 12x + 36 ( subtract x from both sides )

0 = x² - 13x + 36 , that is

x² - 13x + 36 = 0 ← in standard form

(x - 4)(x - 9) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

x - 9 = 0 ⇒ x = 9

As a check

Substitute these values into the equation and if both sides are equal then they are the solutions.

x = 4

left side = \sqrt{4} + 6 = 2 + 6 = 8

right side = x = 4

Since 8 ≠ 4 then x = 4 is an extraneous solution

x = 9

left side = \sqrt{9} + 6 = 3 + 6 = 9

right side = x = 9

Thus the solution is x = 9 → B

8 0
2 years ago
Given the following geometric sequence, find the 12th term: {2, -4, 8, ...}.
BaLLatris [955]
2 times what = -4?
-2 does
-2 x 2 = -4

-4 time what = 8?
Again, -2.
-2 x -4 = 8

You could do this over and over again or make a table, or you can make a function.
f(n) = f(1) • r^{n-1}
f(1) in this case is 2.
f(n) = 2 • r^{n-1}
r is rate of change, which is -2.
f(n) = 2 • -2^{n-1}
To find the 12th number in the sequence, just substitute n for 12.
f(12) = 2 • -2^{12-1}
f(12) = 2 • -2^{11}
-2^11 = -2048
2 x -2048 = -4096
So the 12th number in the sequence will be -4096.
3 0
3 years ago
) 6 students are going on a field trip and 35 students are staying at school. What is the ratio of
In-s [12.5K]

Answer:

6:41

Step-by-step explanation:

We know that the number of students going on the field trip is 6.

To find the total number of students, add the number of students going on the trip and the number of students staying at the school: 6 + 35 = 41

So the ratio of the number of students going on the field trip to the total number of students is 6:41

8 0
2 years ago
I need help with this question
zepelin [54]

Answer:

205.62

Step-by-step explanation:

7 0
2 years ago
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