Answer:
Factor.
Step-by-step explanation:
In Mathematics, the quadratic formula is used for determining the two factors (roots) of any quadratic equation.
The standard form of a quadratic equation is ax² + bx + c = 0
Mathematically, the quadratic equation is given by the formula;
[tex] x = \frac {-b \; \pm \sqrt {b^{2} - 4ac}}{2a} [/tex]
Hence, the quadratic formula allows us to find factor solutions to any quadratic equation.
Mary has a box full of apples:
First, Tom takes out two more than half of the apples.
Then, Linda takes out two fewer than half of the remaining apples.
Now, there are only 20 apples left in the box.
How many apples were there in the box originally?
Answer:
Step-by-step explanation:
50
In one house, a realtor decorates 4 twin beds and 1 queen bed with a total of 18 pillows.
In another house, she decorates 4 twin beds and 4 queen beds with a total of 36 pillows.
She puts the same number of pillows on each twin bed, and the same number of pillows on each queen bed.
How many pillows does she put on each twin bed?
How many pillows does she put on each queen bed?
Answer:
The answer would be 3 pillows on each twin bed and 6 pillows on each queen bed.
Step-by-step explanation:
first house:
3 pillows x 4 twin beds = 12 pillows
18 total pillows - 12 twin bed pillows = 6 queen bed pillows
Second house
6 queen bed pillows x 4 queen beds = 24 queen bed pillow
3 twin bed pillows x 4 twin beds = 12 twin bed pillows
24 queen bed pillow + 12 twin bed pillows = 36 total pillows
Answer:
3 pillows on each twin bed and 6 pillows on each queen bed.
Step-by-step explanation:
(i had this on khan and i already knew the answer just wanted to help :>)
Bags of flour at a local grocery store have a mean weight of 83 ounces with a standard deviation of 2 ounces. The manufacturer of the flour states that 5% or less of the bags are underweight. What is this weight?
Find the z-table here.
79.7 ounces
80.4 ounces
80.9 ounces
81.3 ounces
Answer:
80.4
Step-by-step explanation:
JK, KL and LJ are all tangent to O (not drawn to scale). JA = 13, AL = 9, and
CK = 11. Find the perimeter of JKL.
a.)66
b.)44
c.)33
d.)48
Answer:
a.) 66
Step-by-step explanation:
Perimeter of JKL = JA + AL + CK + CL + KB + JB
JA = 13,
AL = 9,
CK = 11
CL = AL = 9 (tangents drawn from an external point are congruent)
KB = CK = 11 (tangents drawn from an external point are congruent)
JB = JA = 13 (tangents drawn from an external point are congruent)
Plug in the values
Perimeter of JKL = 13 + 9 + 11 + 9 + 11 + 13
= 66
Match the base to the corresponding height.
Base (b)
Height (h)
b.
b
h
h
b
Answer:
B. is the right answer
Step-by-step explanation:
Because I just know
the regular price of a camera 180.00.the camera is on sale for 25% off the regular price.what is the sale price of the camera in dollars and cents
*URGENT*
I don’t understand this and i don’t know the answers, please help!!
Answer:
A) x>8
B) x<4
Step-by-step explanation:
A) 3x+5>29
3x>24
x>8 (It's greater than because the angle opposite is greater than the other angle)
B) 6x-17<7
6x<24
x<4 (It's less than because the angle opposite is smaller than the other angle)
Help fast please....
Answer:
a triangular prism
Step-by-step explanation:
they are all 180)
Answer:
Possibly pyramid and if it needs to be more specific triangular based pyramid.
Though this might not be correct.
Step-by-step explanation:
Write the equation of a line that passes through the point (1,4) and has a slope of 9.
Answer:
y=9x-5
Step-by-step explanation:
You want to find the equation for a line that passes through the point (1,4) and has a slope of 9.
First of all, remember what the equation of a line is:
y = mx+b
Where:
m is the slope, and
b is the y-intercept
To start, you know what m is; it's just the slope, which you said was 9. So you can right away fill in the equation for a line somewhat to read:
y=9x+b.
Now, what about b, the y-intercept?
To find b, think about what your (x,y) point means:
(1,4). When x of the line is 1, y of the line must be 4.
Because you said the line passes through this point, right?
Now, look at our line's equation so far: b is what we want, the 9 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specifically passes through the point (1,4).
So, why not plug in for x the number 1 and y the number 4? This will allow us to solve for b for the particular line that passes through the point you gave!.
(1,4). y=mx+b or 4=9 × 1+b, or solving for b: b=4-(9)(1). b=-5.The equation of the line that passes through the point (1,4) with a slope of 9
is
y=9x-5
Find the value of (0.6)-(0.5).
Answer:
0.1
Step-by-step explanation:
Answer:
0.1
Step-by-step explanation:
Was this the answer you were looking for??
PLS HELP I WILL MARK BRAINLYEST !!!!!!
Answer:
the third option
Step-by-step explanation:
GUYS PLZ HELP I NEED TO PASS
Answer:
The vertex is (6,-5)
the axis of symmetry is x = 6
Which equation below has infinite solutions?
and please hurry it is due in an hour!!!!
Answer:
B
Step-by-step explanation:
2(x-4) = 2x - 8
for calculating weighted mean of 64 patients with pulmonary tuberculosis by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660
Answer:
for calculating weighted mean of 64 patients with pulmonary tuberculosisfor calculating weighted mean of 64 patients with pulmonary tuberculosis by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660 by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660
Find the area of the triangle with height (x+8) and base (2x+4). (A=1/2bh)
Answer:
x^2+10x+16
Step-by-step explanation:
Plug in the values
h=x+8
b=2x+4
A=1/2(2x+4)(x+8)
A=(x+2)(x+8)
FOIL: x^2+8x+2x+16
A=x^2+10x+16
Which is the net for this rectangular prism
it's the top left corner
Answer:
top left!
Step-by-step explanation:
add it all together and get that! :D
What is the area of the rectangle above?
A.
14 square units
B.
28 square units
C.
44 square units
D.
33 square units
Answer:
A = 33 units^2
Step-by-step explanation:
The area of a rectangle is given by
A = l*w where l is the length and w is the width
A = 11 * 3
A = 33 units^2
Answer:
D. 33 square units
Step-by-step explanation:
A=wl=3x11=33
30 Points! To Who Ever Can Give Me The Answer
Answer:
the answer is 2
Step-by-step explanation:
12-5(2)=12-10=2
please mark brainliest if you can, it will help me a lot
Answer:
A
Step-by-step explanation:
12-5(2)
5 times 2 = -10
12-10= 2
try, check, and revise or write an equation to solve
What are the two whole numbers whose product is 294 and whose quotient is 6?
Answer: 7 and 42.
Step-by-step explanation:
Let the two whole numbers be x and y.
From the question given, we can form an equation as:
x × y = 294 ........ i
x/y = 6 .......... ii
From equation ii
x/y = 6
x = 6y
Put the value of x back into equation i
x × y = 294
6y × y = 294
6y² = 294
y² = 294/6
y² = 49
y = ✓49
y = 7
Since x × y = 294 and y = 7,
x = 294/7
x = 42
The numbers are 7 and 42.
a teacher attempts to make a number cube unfair by drilling out the spots on one side and inserting lead weights. to determine if she was successful she rules the number cube 50 times and keeps track of the number of times she rolls a 1. she rolls a 1 15 times. She would like to know if the data provide convincing evidence that the proportion of roles will land on a one is greater than 1/6. are the conditions for inference met?
yes the conditions for infants are met
no, the 10% condition is not met
no, the large counts condition is not met
no the rain is condition is not met
Answer:
No, the Large Counts Condition is not met.
Step-by-step explanation:
edge 2021
The condition for inference met is no, the large count's condition is not met.
A teacher attempts to make a number cube unfair by drilling out the spots on one side and inserting lead weights. to determine if she was successful she rules the number cube 50 times and keeps track of the number of times she rolls a 1. she rolls a 1 15 times.
What is the interference?Interference is the phenomenon that occurs when two waves meet while traveling along with the same medium.
The interference of waves causes the medium.
She would like to know if the data provide convincing evidence that the proportion of roles will land on a one is greater than 1/6.
Therefore option second is correct.
That is no, the large count's condition is not met.
To learn more about the interference visit:
https://brainly.com/question/2166481
#SPJ2
Can someone help me with this question?
Answer:
m = 4
Step-by-step explanation:
[tex] \because ABCD\sim QRST[/tex]
[tex] \therefore \frac{10}{m}= \frac{15}{6}[/tex]
[tex] \therefore m= \frac{10\times 6}{15}[/tex]
[tex] \therefore m= \frac{60}{15}[/tex]
[tex] \therefore m=4[/tex]
The area of the triangle below is 12.16 square centimeters. What is the length of the base?
3.2 cm is the height
2 * A/ B= 2 * 12.16 / 3.6 = 6.76
Plastic Rods
A factory makes rods by cutting plastic pipes that are 5 feet long into 8 rods.
Part A
How long is each rod?
40
feet
You may use the scratchpad to show your work.
Enter your answer as a fraction or a mixed number.
Part B
What is the total length of 13 rods?
Answer
65 feet long
Step-by-step explanation:
15x5 is 65
Answer:
Step-by-step explanation:
5 feet ÷ 8 = 5/8 of a foot for each rod.
(In inches that would be 5/8 × 12 inches = (5 × 12)/8 inches = 60/8 inches = 15/2 inches = 7 1/2 inches.)
13 rods would be 13 × 5/8 feet = (13 × 5)/8 feet = 65/8 feet = 8 1/8 feet
each Saturday morning Janie works 5 hours and earns $35.75. How much does Janie earn for each hour she works?
Answer:
$7.15
Step-by-step explanation:
You would get this by dividing $35.75 by 5.
Plzz help meee!
A. Break up the figure into a 2 ft by 3ſ it triangle and a 5 ft by § ft rectangle.
B.Break up the figure into a 2 ft by 5 ft triangle and a 5 ft by 3 ft rectangle.
C.Break up the figure into a 2 ft by § ft triangle and a 5 ft by § ft rectangle.
D.Break up the figure into a 2 ft by 13 ft triangle and a 5 ft by 3 ft rectangle.
Answer:
Step-by-step explanation:
MADD (Mother's Against Drunk Drivers) wishes to estimate the proportion of adult drivers that have run at least one red light in the last month. A poll is conducted on a simple random sample of adult drivers and it is found that out of 1251 adult drivers, 641 of them have run at least one red light in the last month. You will be finding a 90% confidence interval for the fraction of adult drivers that run at least one red light in the last month.
Required:
Check that the normality assumptions are met?
Answer:
Normality assumptions are met.
The 90% confidence interval for the proportion of adult drivers that run at least one red light in the last month is (0.4892, 0.5356).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
A poll is conducted on a simple random sample of adult drivers and it is found that out of 1251 adult drivers, 641 of them have run at least one red light in the last month.
This means that [tex]n = 1251, \pi = \frac{641}{1251} = 0.5124[/tex]
Normality assumptions:
We need that: [tex]n\pi \geq 10, n(1-\pi)\geq 10[/tex]
We have that:
[tex]n\pi = 1251*0.5124 = 641[/tex]
[tex]n(1-\pi) = 1261*0.4876 = 610[/tex]
So normality assumptions are met.
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
The lower limit of this interval is:
[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5124 - 1.645\sqrt{\frac{0.5124*0.4876}{1251}} = 0.4892[/tex]
The upper limit of this interval is:
[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5124 + 1.645\sqrt{\frac{0.5124*0.4876}{1251}} = 0.5356[/tex]
The 90% confidence interval for the proportion of adult drivers that run at least one red light in the last month is (0.4892, 0.5356).
Find y
A)10
B)2
C)15
D)4
Answer:
y = 4Step-by-step explanation:
3y = y + 8
3y - y = 8
2y = 8
y = 8÷2
y = 4
Answer:
4
Step-by-step explanation:
A university class has 26 students: 12 are art majors, 9 are history majors, 5 and are nursing majors. The professor is planning to select two of the students for a demonstration. The first student will be selected at random, and then the second student will be selected at random from the remaining students. What is the probability that the first student selected is a history major and the second student is a nursing major?
Answer:
6.9%.
Step-by-step explanation:
Given that a university class has 26 students: 12 are art majors, 9 are history majors, 5 and are nursing majors, and the professor is planning to select two of the students for a demonstration, where the first student will be selected at random, and then the second student will be selected at random from the remaining students, to determine what is the probability that the first student selected is a history major and the second student is a nursing major the following calculations must be performed:
26 = 100
9 = X
9 x 100/26 = X
900/26 = X
34.61 = X
25 = 100
5 = X
500/25 = X
20 = X
0.2 x 0.3461 = X
0.069 = X
Thus, the probability that the first student selected is a history major and the second student is a nursing major is 6.9%.
Answer:
6.9%
Step-by-step explanation:
Hope this will help
(f) 0.7 - 6.32 + (-0.8) + 1.28
Answer:
=0.7f−5.84
Step-by-step explanation:
Let's simplify step-by-step.
f(0.7)−6.32−0.8+1.28
=0.7f+−6.32+−0.8+1.28
Combine Like Terms:
=0.7f+−6.32+−0.8+1.28
=(0.7f)+(−6.32+−0.8+1.28)
=0.7f+−5.84
Answer:
=0.7f−5.84
Pls Brainliest
The human retina contains cells called rods
and cones that absorb light and change it
to electric signals sent to the brain. There
are approximately 120,000,000 rods and
6,000,000 cones in a retina. How is the
number of rods in a human retina written
using scientific notation?
Answer:
H) 1.2 x 10^8
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
1.2 x 10^8