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Yakvenalex [24]
2 years ago
11

Select the correct answer.

Mathematics
2 answers:
Paladinen [302]2 years ago
8 0

Answer:

D

Step-by-step explanation:

2x^2+16x-8=0

Simplify:

x^2+8x=4

Rewrite in the form (x+a)^2=b:

x^2+8x=4

Add 4^2 to both sides:

x^2+8x+4^2=4+4^2

x^2+8x+4^2=20

\left(x+4\right)^2=20

x+4=\sqrt{20} or x+4=-\sqrt{20}

x = -4±\sqrt{20}

x= -4±2\sqrt{5}

kipiarov [429]2 years ago
5 0

Answer:

d

Step-by-step explanation:

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Find (fog)(x) given f(x) = 2x2-x+1 and g(x) = 4x +3
Zolol [24]

Answer:

fg(x) = 32x²+44x+16

Step-by-step explanation:

fg(x) = f[g(x)]

= f(4x+3)

= 2(4x+3)²-(4x+3)+1

= 2(4x+3)²-(4x+3)+1

= 2(16x²+24x+9)-4x-3+1

= 32x²+44x+16

8 0
2 years ago
What is the least common multiple of 96 144 and 224
Gennadij [26K]
The least common multiple of 96, 144, and 224 is 2016.

Hope this helps! :D
5 0
3 years ago
Read 2 more answers
Please help! will give 30 points!
insens350 [35]

Answer:

Other needs =25,2 degrees

insurance = 100,8 degrees

Taxes= 7,2

Housing = 57,6

food= 57,6

childcare = 64,8

transportation = 46,8

Step-by-step explanation:

Its % of 360 degrees so you have to calculate the percentage of each categorie on 360 degrees to find the angles. Exemple, for the Other needs, you take 7% out of 360 degrees and you find that it is equal to 25,2. (7% x360 degrees /100)

7 0
3 years ago
A town has a population of 14,000 and grows 5% every year. What will be the population after 14 years, to the nearest whole numb
hammer [34]

Answer:

23,800 people

Step-by-step explanation:

what is 5 % of 14,000- 700( 0.05 times 14,000)

700 times 14 is 9,800

9800 + 14000 is

0 0
3 years ago
What is the probability of selection for any man in a proportionate random sample, where a sample of 100 will be drawn from a po
kolbaska11 [484]
Working Principle: Stratified Random Sampling

nx = (Nx/N)*n

where:
    nx = sample size for stratum x
    Nx = population size for stratum x
    N = total population size 
    n = total sample size

Given:

  Nx = 100
  N = 1000
  n = 0.5*(1000) = 500

Required: Probability of Man to be selected

Solution:

nx = (Nx/N)*n
nx = (100/1000)*500 = 50 men

ny = (Nx/N)*n
ny = (100/1000)*500 = 50 women


Probability of Man to be selected = nx/(nx + ny)*100 = 50/(50+50)*100 = 50%

<em>ANSWER: 50%</em>
7 0
3 years ago
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