Help meeee please in quadratic equation

Answers

Answer 1

Answer: What part are you wanting to know about? The written of number 9?

Answer 2

Answer: 7x² + 31x + 12 = 0

x = -b ± √(b² - 4ac)
2a
x = -(31) ± √((31)² - 4(7)(12))
2(7)
x = -31 ± √(961 - 4(84))
14
x = -31 ± √(961 - 336)
14
x = -31 ± √(625)
14
x = -31 ± 25
14
x = -31 + 25 or x = -31 - 25
14 14
x = -6 or x = -56
14 14
x = ⁻³/₇ or x = -4

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What is the slope-intercept form of the function that contains the point (1, –2) and has a slope of –3?Y= __ x + __

Answers

Well, from the info given, you cannot automatically put it into slope intercept form. You have to put it into point slope form first and then convert it.

Point slope form looks like this: y - y1 = m(x - x1)

Now, with the info it looks like this: y - (-2) = -3(x - 1)

Now you distribute and change the - (-2) to +2 (because subtracting a negative is the same as adding a positive) and you get: y + 2 = -3x - 3

Now, you subtract 2 to get y by itself (we are converting now)

y = -3x - 5

Hope this helps!

You spend $10 on office supplies out of the $25 budget what percent of your budget did you spend

Answers

Answer:

You spent 40% of your budget on office supplies.

Step-by-step explanation:

1. First take the total budget:

$25

2. Then take the money you spent on office supplies and divide it by the total budget to find the ratio you spent:

$Ratio=(10)/(25)$

$Ratio=0.4$

3. Finally multiply the ratio by a hundred to find the percentage of the budget you spent on office supplies:

$Percentage=0.4*100$

$Percentage=40$ %

Therefore, you spent 40% of your budget on office supplies.

The simplest way to find percent is to take the partial number, divide by the whole number, and multiply the answer by 100%.

$(10)/(25)$ = 0.4

0.4 x 100% = 40%.

Log81 1/9= need help with this

Answers

If it is log 81 base 1/9=x, then you can make the following equation
(1/9)^x=81
x=-2
in this case since 9 squared is 81 and you need to flip the fraction so you add a negative,
Hope this helps.

$log_(81)(\frac{1}9})$
$81^(x) = (1)/(9)$
$ln(81^(x)) = ln((1)/(9))$
$x\ln(81) = ln((1)/(9))$
$(x\ln(81))/(ln(81)) = (ln((1)/(9)))/(ln(81))$
$x = (ln((1)/(3))^(2))/(ln(3)^(4))$
$x = (2ln((1)/(3)))/(4ln(3))$
$x = (ln((1)/(3)))/(2ln(3))$
$x = (-ln(3))/(2ln(3))$
$x = -(1)/(2)$

many colleges determine the number of full time students f,by using the formula f=n/15 where n is the total number of credits for each semester if a student registers for 46140 credits how many full time students does the campus have. then what is the formula for n n=

Answers

"A student" doesn't register for 46,140 credits, unless he wants to be very very busy.

If ALL of the students on campus register for 46,140 credits, then many colleges
would estimate the number of full-time students by using the formula

f = n / 15 = 46,140 / 15 = 3,076 students.

That's not the formula for 'n'. 'n' is the total number of credits for the semester,
and the question tells you what 'n' is. Knowing 'n', the formula helps you find 'f'.

If the factors of a polynomial are x+7 and x-3, what values of x make that polynomial 0?

Answers

The values that make x that polynomial would be 0 would be 7 and negative 3.

Hope this helps:)

What is the measure of ZABD?

Answers

Answer:

Step-by-step explanation:

If ZABC is a 90 degree angle all together and ZDBC is 51 degrees

Subtract 51 from 90 to get the angle for ZABD

90-51=39

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