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lidiya [134]
3 years ago
9

1. If f(x) = 9x2 + 5x - 8, then f(-2) = ?

Mathematics
2 answers:
topjm [15]3 years ago
5 0

go to www.sybolab.com it'll help with all math problems F=5 btw

aalyn [17]3 years ago
4 0
9(-2)2+5(-2)-8

Answer: -54
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Convert the following decimals to percent.<br> 1) 4.75 =<br> 2) 0.99 = <br> 3) 10.4 =
Scorpion4ik [409]

The percentage value of the decimals are 475%, 99% and 1040% respectively.

Data;

  • 4.75
  • 0.99
  • 10.4

<h3>Conversion of Decimals to Percentage</h3>

a) 4.75

To convert a decimal value to percentage, all we simply need to do is multiply that number by 100.

4.75 * 100 = 475 \%

b) 0.99

To convert this decimal value to percentage, we just need to multiply this number by 100.

0.99 * 100 = 99 \%

c) 10.4

To convert this decimal value to percentage, we just need to multiply this number by 100.

10.4 * 100 = 1040\%

Learn more on conversion of decimal value to percentage here;

brainly.com/question/870657

brainly.com/question/13060022

6 0
2 years ago
The marginal profit in dollars on Brie cheese sold at a cheese store is given by Upper P prime (x )equals x (60 x squared plus 9
blondinia [14]

Answer:

Part A:

P(x)=15x^4+30x^3-50

Part B:

P(4)=$4270

Step-by-step explanation:

Part A:

In order to find the profit function P(x) we have to integrate the P'(x)

P'(x)=x(60x^2+90x)

P'(x)=60x^3+90x^2

\int\limits {p'(x)} \, dx =\int\limits {60x^3+90x^2} \, dx

P(x)=15x^4+30x^3+C

when x=0, C=-50

P(x)=15x^4+30x^3-50

Part B:

x=4

P(x)=15x^4+30x^3-50

P(4)=15*4^4+30*4^3-50

P(4)=$4270

Profit from selling 400 pounds is $4270

8 0
3 years ago
Find the common ratio of the geometric sequence 6, 48, 384, ...​
gregori [183]

Answer:

r = 8

Step-by-step explanation:

The common ratio r of a geometric sequence is

r = \frac{a_{2} }{a_{1} } = \frac{a_{3} }{a_{2} } = ..... = \frac{a_{n} }{a_{n-1} }

Then

r = \frac{48}{6} = \frac{384}{48} = 8

8 0
3 years ago
Carly bought 3 pounds of birdseed. How many ounces of birdseed did she buy?
marissa [1.9K]

Answer:

48 ounces

Step-by-step explanation:

If...

1 lb= 16oz

Then...

3 x 16 = 48oz

7 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST!!
NikAS [45]

Answer:

3.58

Step-by-step explanation:

Given :

y = 2x + 4 -------- eq1

y = 2x - 4 -------- eq2

sanity check : both equations have same slope, so we can conclude that they are both parallel to one another.

Step 1: consider equation 1, pick any random x-value and find they corresponding y-value. we pick x = -2

This gives us y = 2(-2) + 4 = 0

Hence we get a point (x,y) = (-2,0)

Step 2: express equation 2 in general form (i.e Ax + By + C = 0)

y = 2x-4 -------rearrange---> 2x - y -4 = 0

Comparing with the general form, we get A = 2, B = -1, C = -4

Recall that the distance between 2 parallel lines is given by the attached formula (see attached picture).

substituting the values for A, B, C and (x, y) from the previous step:

d = | (2)(-2) + (-1)(0) + (-4) |  / √(2² + (-1)²)

d = | -4 + 0 - 4 |  / √(4 + 1)

d = | -8 |  / √5

d = 8  / √5

d = 3.5777

d = 3.58 (rounded 2 dec. pl)

6 0
3 years ago
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