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3 years ago

OMG can someone please help me solve this problem

1 answer:

5 0

The correct answer is A.) { - 0.79 ; 1.08 }, because
 For ax^2 + bx + c = 0, the value of x is given by: ;
a = - 7 ; b = 2 ; c = 6 ;
b^2 - 4ac = 4 + 168 = 172 ; $\sqrt{172}$ ≈ 13.11 ;
x 1 = ( - 2 + 13.11 ) / (- 14) = 11.11 / ( - 14 ) ≈ -0.79 ;
x = 2 = ( - 2 - 13.11 ) / ( - 14 ) = (-15.11) / (- 14 ) ≈ 1.08 ;

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Find the length of the segment. Round your answer to the nearest tenth.

Diano4ka-milaya [45]

Answer:

The length of the line segment: 5.8 units

Step-by-step explanation:

To find the length of a line segment, you must us the formula:

D= $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

1. well, you must first identify your coordinates

Point A is (-2, -4) which is ( $x_1$ , $y_1$ )

Point B is (1, 1) which is ( $x_2$ , $y_2$ )

2. Now you put these coordinates into your equation

D= $\sqrt{(1--2)^2+(1--4)^2}$

Ofc, you gotta keep in mind of any double negatives

D= $\sqrt{(1+2)^2+(1+4)^2}$

3. simplify

D= $\sqrt{(3)^2+(5)^2}$

D= $\sqrt{9+25}$

D= $\sqrt{34}$

The square root of 34 is 5.83095189.... in decimal form

4. Round it to the nearest tenth

5.83 and since 3 is lower than five, it does nothing

5.8= The length of your line segment!

4 0

3 years ago

Mia and Kai want to rent a canoe at the boathouse on the river. It costs $6.95 to rent a canoe for 1 hour .

Mrac [35]

How many hours we they going to rent the canoe=x 6.95x

6 0

3 years ago

Customers are used to evaluate preliminary product designs. In the past, 95% of highly successful products received good reviews

maks197457 [2]

Answer:

Step-by-step explanation:

The given information can be tabulated as follows.

Success type High Moderate Low Total

0.40 0.35 0.25 1

Good reviews 0.95 0.60 0.10

Combined prob 0.4*0.95 0.35*0.6 0.25*0.1

0.38 0.21 0.025 0.6125

A) the probability that a product attains a good review

=Prob it it successful and gets good review + Prob it is moderate successful and gets good review +Prob it it low successful and gets good review

= 0.6125

B) If a new design attains a good review, the probability that it will be a highly successful product= $\frac{0.38}{0.6125} \\=0.6204$

C) Prob that does not attain a good review =(0.40*0.05)+0.35(0.4) +(0.25)*0.9

= 0.385

Prob for successful not getting good review = 0.40(0.05) = 0.02

Reqd prob = $\frac{0.02}{0.385} \\=0.05195$

8 0

4 years ago

The grades for 200 students at a middle school are represented in the graph below how many more students earned Cs then Ds

Xelga [282]

Answer:

B. 60

Step-by-step explanation:

There are a total of 200 students here, and 45% got Cs, to find how many got Cs, multiply 200 by 45%, or 0.45: 200*0.45 = 90, 90 people got Cs.

15% got Ds, multiply 200 by 15%, or 0.15 to get 30, 30 got Ds

The amount who got Cs minus the amount who got Cs is 90 - 30 = 60, 60 more students got Cs than Ds

3 0

3 years ago

What is the value of p? Answer 32 (6p-10)

stealth61 [152]

Answer:

p = 7

Step-by-step explanation:

6p - 10 and 32 are vertically opposite angles and are congruent , then

6p - 10 = 32 ( add 10 to both sides )

6p = 42 ( divide both sides by 6 )

p = 7

6 0

2 years ago