HEEEEEELP

question in the attached picture

Answers

Answer 1

Answer: 1) $x^(2) +2x-10=0$
a=1
b=2
c=-10
$x= \frac{-(2) +or- \sqrt{ 2^(2)+4(1)(-10) } }{2(1)}$
$x= (-2 + or - √(4+40) )/(2)$
$x= (-2 +or- √(44) )/(2)$
$x= (-2+or- 2√(11) )/(2)$
$x= -1+or- √(11)$
$√(11)=3.32$
-1+3.32 = 2.32
-1-3.32 = -4.32

2) $x^(2) -2x-9=0$
a=1
b=-2
c=-9
$x= \frac{-(-2)+or- \sqrt{ (-2)^(2)+4(1)(-9) } }{2(1)}$
$x= (2+or- √(4+36) )/(2)$
$x= (2+or- √(40) )/(2)$
$x= (2+or-2 √(10) )/(2)$
$x=1+or- √(10)$
$√(10) =3.16$
1+3.16 = 4.16
1-3.16 = -2.16

3) $x^(2) -9x+5=0$
a=1
b=-9
c=5
$x= \frac{-(-9)+or- \sqrt{(-9)^(2)-4(1)(5) } }{2}$
$x= (9+or- √(81-20) )/(2)$
$x= (9+or- √(61) )/(2)$
$x= (9)/(2) +or- ( √(61) )/(2)$
$√(61) = 7.81$
$(7.81)/(2) =3.91$
$(9)/(2)=4.5$
4.5+3.91 = 8.41
4.5-3.91 = 0.59

Related Questions

Eric bought lunch for him and his friends at Papa's Pizza. His bill was $50 with tax. If he used a 15% off coupon and then left a 20% tip based on the discounted ticket, how much did he have left out of $100 bill?
1) what is the meaning of commutative property?2)what is the meaning of distributive property?3)what is the meaning of associative property?
Add 17,346 + 92,601
1) Solve by using the perfect squares method. x2 + 8x + 16 = 0 2) Solve. x2 – 5x – 6 = 0 3) What value should be added to the expression to create a perfect square? x2 – 20x 4) Solve. x2 + 8x – 8 = 0 5) Solve: 2x2 + 12x = 0 6) Solve each problem by using the quadratic formula. Write solutions in simplest radical form. 2x2 – 2x – 1 = 0 7) Calculate the discriminant. x2 – x + 2 = 0 8) Calculate the discriminant and use it to determine how many real-number roots the equation has. 3x2 – 6x + 1 = 0 9) Without drawing the graph of the equation, determine how many points the parabola has in common with the x-axis and whether its vertex lies above, on, or below the x-axis. y = 2x2 + x – 3 10) Without drawing the graph of the equation, determine how many points the parabola has in common with the x-axis and whether its vertex lies above, on, or below the x-axis. y = x2 – 12x + 12
How to solve these question?

Point Kis on line segment JL. Given JL = 10, KL = 4x, and JK = 2x,determine the numerical length of KL.

Answers

Answer: what you mean

Step-by-step explanation:

Answer:

Step-by-step explanation:

What times 3 gives you 16

Answers

technically nothing times 3 get you 16 but 3 times 5 equals 15 which is the closest answer but the answer would be 5.3

I know the answer to this has already been given, but I just want to tell you how to work this out on your own using a formula.

So, say we want to find out what times 6 = 90. So instantly we want to find out the number of 6s that go into 90, because that is our answer.

So we do 90 divided by 6 we get 15.

So know we know that 15 6s fit into 9.

15 is our answer.

Joanna went school supply shopping. She spent $26.75 on notebooks and pencils. Notebooks cost $1.85 each and pencils cost $1.38 each. She bought a total of 17 notebooks and pencils. How many of each did she buy?A. 12 notebooks; 5 pencils
B. 7 notebooks; 10 pencils
C. 10 notebooks; 7 pencils
D. 5 notebooks; 12 pencils

Answers

C. 10 notebooks; 7 pencils.

Identify the sample chosen for the study. The number of hours a group of 12 children in Mrs. Smith's kindergarten class sleep in a day. Answer2 Points The 12 children selected in Mrs. Smith's kindergarten class. All children in Mrs. Smith's kindergarten class. The number of hours children sleep.

Answers

Answer:

The 12 children selected in Mrs. Smith's kindergarten class.

Step-by-step explanation:

A sample is a representative part of a population on which a research is carried out.

The study In Mrs Smith's class was to find out the number of hours the children in Kindergarten Sleep in a day. Out of the total number of students, 12 were selected for observation. The 12 childen selected is therefore a sample of the class.

Final answer:

The sample in the study refers to the 12 children in Mrs. Smith's kindergarten class. A sample is a subset of people selected from a larger group for study purposes. In this research, the data being analyzed only pertains to these selected individuals.

Explanation:

In this study, the sample chosen is the group of 12 children in Mrs. Smith's kindergarten class. This is because the data being collected and scrutinized is related to these particular individuals. In this context, 'sample' refers to the subset of people chosen from a larger group (the population) for research or study purposes. It is the set of individuals on which the study or experiment is conducted. In this case, the larger population could be considered all children in kindergarten, but the sample for the study is specifically the 12 children in Mrs. Smith's class, as the study only includes their sleep patterns.