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2 years ago

Hhelp plssssssssssssssssssssssssssss

Mathematics

1 answer:

Ipatiy [6.2K]2 years ago

7 0

Answer:

This is false

Step-by-step explanation:

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Identify a solution of the equation: log2x+log(x−5)=2

Harrizon [31]

Answer:

3.x= 10

Step-by-step explanation:

log 2x + log (x - 5) = 2
log (2x(x - 5)) = 2
2x(x - 5) = 10²
2(x² - 5x) = 100
x² - 5x - 50 = 0
x² + 5x - 10x - 50 = 0
x(x + 5) - 10(x + 5) = 0
(x - 10)(x + 5) = 0
x = 10
x = -5, this root is discounted as log should be positive.

Correct choice is 3.

6 0

3 years ago

What are the first and last terms of this geometric series

11Alexandr11 [23.1K]

ANSWER

E. 10 and 640

EXPLANATION

The given series is

$\sum_{i=1}^45 \times 2^{2i-1}$

To find the first term of the series we substitute i=1 to get,

$a_1 = 5 \times {2}^{2 \times 1 - 1}$

$a_1 = 5 \times {2}^{ 1} = 10$

For the last term of the series, we substitute i=4 to obtain,

$a_4 = 5 \times {2}^{2 \times 4 - 1}$

$a_4 = 5 \times {2}^{7}$

This implies that,

$a_4 = 5 \times 128 = 640$

Therefore the correct answer is E

7 0

3 years ago

The third graders at Grace Hardeman Elementary want to play kickball. There are 20 students, and each team will have 5 students.

Julli [10]

Answer:

Step-by-step explanation:

If there are 20 students, and each team has 5 students, then there will be 4 teams of third graders that will play kickball.

20/5 = 4

5 0

2 years ago

The following polynomial is defined on the interval [-2, 2]:

Bess [88]

Answer:

Using Matlab code for Fourier series to calculate for the function, see the attached

Step-by-step explanation:

Go through the picture step by step.

6 0

4 years ago

Kirsten invested $2000 into a CD with a 5% annual interest rate.

LenKa [72]

What do you wanna know?

The annual interest rate is 2000•0,05=100

The new price you have to pay is 2000•1.05 (change factor)

5 0

3 years ago