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3 years ago

Find the discriminant of y = –2x^2 + 8x –3

Mathematics

1 answer:

fgiga [73]3 years ago

6 0

Answer: 40

Step-by-step explanation:

use values A, B, and C to find the answer

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find the simple interest on 10000 from 1 July to 12 september 2007 at 5% per year calculate the interest

rusak2 [61]

Answer:

Simple interest: 83.33, Final amount: 10083.33

Step-by-step explanation:

you dont get a explanation >:)

6 0

3 years ago

In the figure, j | k and mZ1 = 63" What is the mZ4? Enter your answer in the box

SIZIF [17.4K]

Answer:

127

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Rachel earned $23,750 and paid a FICA tax of 7.65%. How much FICA tax did she pay?

MAVERICK [17]

Tax = 7.65% of $23, 750

Tax = 0.0765 x 23750

Tax = $1816.88 (nearest hundredth)

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Rachel needs to pay $1816.88 for FICA tax
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7 0

4 years ago

The ability to find a job after graduation is very important to GSU students as it is to the students at most colleges and unive

gtnhenbr [62]

Answer: (0.8468, 0.8764)

Step-by-step explanation:

Formula to find the confidence interval for population proportion is given by :-

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where $\hat{p}$ = sample proportion.

z* = Critical value

n= Sample size.

Let p be the true proportion of GSU Juniors who believe that they will, immediately, be employed after graduation.

Given : Sample size = 3597

Number of students believe that they will find a job immediately after graduation= 3099

Then, $\hat{p}=\dfrac{3099}{3597}\approx0.8616$

We know that , Critical value for 99% confidence interval = z*=2.576 (By z-table)

The 99 % confidence interval for the proportion of GSU Juniors who believe that they will, immediately, be employed after graduation will be

$0.8616\pm(2.576)\sqrt{\dfrac{0.8616(1-0.8616)}{3597}}$

$0.8616\pm (2.576)\sqrt{0.0000331513594662}$

$\approx0.8616\pm0.0148\\\\=(0.8616-0.0148,\ 0.8616+0.0148)=(0.8468,\ 0.8764)$

Hence, the 99 % confidence interval for the proportion of GSU Juniors who believe that they will, immediately, be employed after graduation. = (0.8468, 0.8764)

4 0

3 years ago

Given that f(x) = x2 + 1 and g(x) = -3, multiply the functions (gºf)(x).

stich3 [128]

Answer:

$(g\cdot f) = -3x^2-3$