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dmitriy555 [2]
2 years ago
7

Help please this is complicated

Mathematics
1 answer:
Mkey [24]2 years ago
4 0

Answer:

2=29

3=x?

kris kross

2x=3×29

2x=87

divide both sides by two

x=43.5

and

3=43.5

so find by this method

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30 POINTS!!! WILL MARK BRAINLIEST IF YOU SHOW ALL YOUR WORK!!!
Alborosie

Answer:

Part A: (2x−5)(x+2)

Part B: (5/2,0) and (-2,0)

Part C: The graph of f(x) has both "ends" of the graph pointing upward. You can describe this as heading toward infinity.

Part D: To graph function we can use x-intercepts and "ends" to sketch.In order to graph better use one more point of parabola that you can find as the average of x-intercepts: (-2+5/2)/2 =1/4.This is just x coordinate and you need to plug in 1/4 in the f(x) and find y coordinate -10 1/8. You can use y-intercept (0,-10) as well to graph.

Step-by-step explanation:

2x^2-3x-5=y

(2x-5)(x+1)=y

(2x-5)(x+1)=0

2x-5=0

2x=5

x=2.5

x+1=0

x=-1

you have an even degree (2) and a positive coefficient (2)

therefore as x---> -∞, f(x)----> +∞

also, as x----> +∞, f(x)----> +∞

also notice that this is a parabola that opens upwards so both "ends" approach positive infinity

plot the x-intercepts, find the vertex using h=-b/2a and substituting this value into the equation to find k and make a table of values to graph the parabola unless you only want a rough sketch of the graph-you know the x-intercepts and you found the vertex using h=-b/2a

Mark brainliest please.

3 0
3 years ago
1. Mother gave donations worth Php 23 900.50 to the Children Foundation and
julia-pushkina [17]

Answer:

What is asked? Total amount left to her.

what are the given? Php 32,097.50 , Php 23,900.50 and Php 60,555.75

what operation should be used to solve the problem? Addition and subtraction

what is the number sentence? Php 23, 900.50+Php32, 097.50=n , Php 60, 555.75 - N = M

what is the complete answer? Php 14,557.75 is the total amount left to her.

7 0
3 years ago
Faelyn noticed that she does not have a common factor. Which accurately describes what Faelyn should do next?
Jlenok [28]
Without knowing what Faelyn has done so far or what she is working with, the second selection seems appropriate.

6x^4 -5x^2 -4
= (6x^4 +3x^2) -(8x^2 +4)
= 3x^2*(2x^2 +1) -4(2x^2 +1)
= (3x^2 -4)(2x^2 +1)
4 0
4 years ago
Read 2 more answers
24 points algebra 1 help!
Mademuasel [1]

teacher = 2x+6

principal = 3x+10

principal - teacher

3x+10 - (2x+6)

distribute

3x+10-2x-6

x+4

Choice B

8 0
4 years ago
Is the national crime rate really going down? Some sociologists say yes! They say that the reason for the decline in crime rates
anygoal [31]

Answer:

a) Level of significance \alpha = 0.01

b) Standard normal

p = 0.75

Z = 0.62

c)  

P = 0.5352

d)  

P > \alpha

e) We fail to reject null hypothesis  

Step-by-step explanation:

Let us say

The null hypothesis H_0 is p= 0.70 which means that Probability of arresting male of age ranging between 15 to 34 years is 0.7

Alternate hypothesis H_1 is p not equal to 0.7 which means that Probability of arresting male of age ranging between 15 to 34 years is not equal to 0.7

a) For 1% level of significance \alpha = 0.01

b) Standard normal

n_p > 5\\n_q >5

p = \frac{24}{32} = 0.75

Z = \frac{(0.75-0.70)}{\sqrt{\frac{(0.7*0.3)}{32} } }  = 0.62

c)  

P = 2 * 0.2676 = 0.5352

d)  

P > \alpha

e) We fail to reject null hypothesis  

Hence, there is not enough data to prove that at 1% level of significance the probability of number of male arrested between age 15-34 is  0.70

5 0
3 years ago
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