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3 years ago

Use the discriminat to describe the roots of each equation. Then select the best description 16x^2+8x+1=0

Mathematics

1 answer:

astra-53 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Discriminant= 8^2-4(16)(1)

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Find the sum of this arithmetic series.<br> | 26 + 24.5 + 23 + 21.5 + ... - 17.5

emmainna [20.7K]

Answer:

127.5

Step-by-step explanation:

The given series is 26 + 24.5 + 23 + 21.5 + ... - 17.5

The first term of this series is a=26

The common difference is d=24.5-26=-1.5

The last term of the series is -17.5

The nth term is given by:

$u_n=a+d(n-1)$

$26+-1.5(n-1)=-17.5$

$-1.5n=-17.5-26-1.5$

$-1.5n=-45$

n=30

The sum of the series:

$S_{n}=\frac{n}{2}(a+l)$

$S_{30}=\frac{30}{2}(26+-17.5)$

$S_{30}=127.5$

8 0

3 years ago

If possible can someone help me with this problem.

Neko [114]

Answer:

I believe your answer is correct. Though I'm not sure if the first picture is right too.

Step-by-step explanation:

7 0

3 years ago

sam said the absoulute value of 14 is -14. Kai said the absolute value of 14 is 14. Who is correct. Explain

Hoochie [10]

Answer:

Kai is right.

Step-by-step explanation:

Absolute Value is always positive.

4 0

3 years ago

Find the missing side in the similar figures below

Lerok [7]

Answer:

a. 28.8

Step-by-step explanation:

Using the theorem of similarity, the following equation can be generated:

$\frac{x}{12} = \frac{25 + 35}{25}$

Solve for x

$\frac{x}{12} = \frac{60}{25}$

Cross multiply

$x*25 = 60*12$

$25x = 720$

Divide both sides by 25

x = 28.8

5 0

3 years ago

Please help me<br>no links or I WILL report you<br>thank you in advance

mafiozo [28]

Answer:

the answer is 24 because if you 6 x 4 it's 24

also with 4x6 it's still 24

plz give me a brailnliess

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers