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3 years ago

Solve the equation by factoring. 3x^2+17x+10=0

Mathematics

1 answer:

spayn [35]3 years ago

6 0

The answer is B because when you factor -5 and -2/3 you get -5 and 2/3

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In a pacemaker factory, all pacemakers must go through a rigorous quality assurance check before being shipped. The table shows

Len [333]

Answer:

16.1%

Step-by-step explanation:

5 0

3 years ago

When obtaining a confidence interval for a population mean in the case of a finite population of size N and a sample size n whic

Elanso [62]

Answer:

95% Confidence interval for the mean

$142.8 \leq\mu\leq158.4$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the mean of a finite population.

The error is multiplied by the following finite population correction factor:

$cf=\sqrt{\frac{N-n}{N-1} }$

The standard deviation can be estimated as

$\sigma=\frac{s}{\sqrt{n}} \sqrt{\frac{N-n}{N-1} } =\frac{24.4}{\sqrt{32} }* \sqrt{\frac{200-32}{200-1} }=3.963$

The 95% confidence interval has a z value of 1.96, so it becomes:

$M-z*\sigma_c\leq\mu\leq M+z*\sigma_c\\\\150.6-1.96*3.963\leq\mu\leq 150.6+1.96*3.963\\\\ 142.8 \leq\mu\leq 158.4$

5 0

3 years ago

To estimate the number of lizards in a certain region, Sean traps 36 lizards and marks them. He releases these lizards and then

Verdich [7]

Answer:

The answer is C. 450

Step-by-step explanation:

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Next Question

Correct

The best estimate for the lizard population is 450.

marked lizards counted

total lizards counted

total marked lizards

estimated lizard population

→

200

→ p = 450

3 0

3 years ago

Estimate the solution to the system of equations. asap, please!! I will mark for brain list

Darya [45]

Answer:

(1 $\frac{1}{3}$ , 2 $\frac{1}{3}$ )

Step-by-step explanation:

Given the 2 equations

7x - y = 7 → (1)

x + 2y = 6 → (2)

Multiplying (1) by 2 and adding to (2) will eliminate the y- term

14x - 2y = 14 → (3)

Add (2) and (3) term by term to eliminate y

15x = 20 ( divide both sides by 15 )

x = $\frac{20}{15}$ = $\frac{4}{3}$ = 1 $\frac{1}{3}$

Substitute this value of x into either of the 2 equations and solve for y

Substituting in (2)

$\frac{4}{3}$ + 2y = 6

2y = 6 - $\frac{4}{3}$ = $\frac{14}{3}$ ( divide both sides by 2 )

y = $\frac{7}{3}$ = 2 $\frac{1}{3}$

7 0

3 years ago

Can someone please help me?

bulgar [2K]

Solution:

<u>Given:</u>

18 = 2b

<u>Solve the equation by isolating the variable.</u>

=> 18 = 2b
=> 2b/2 = 18/2
=> b = 9

The value of b is 9.

Hoped this helped!

6 0

2 years ago