Answer:
x =(8-√28)/-6=4/-3+1/3√ 7 = -0.451
x =(8+√28)/-6=4/-3-1/3√ 7 = -2.215
Step-by-step explanation:
Rearrange
Step 1 :
Equation at the end of step 1 :
(-8x - 1) - (3x2 + 2) = 0
Step 2 : See below
Step 3 : See below
Pulling out like terms :
3.1 Pull out like factors :
Trying to factor by splitting the middle term
Step 4 :
Parabola, Finding the Vertex
Solve Quadratic Equation by Completing The Square
Answer:
x =(8-√28)/-6=4/-3+1/3√ 7 = -0.451
x =(8+√28)/-6=4/-3-1/3√ 7 = -2.215
Hope this helps.
Select the correct answer.
Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were allergic to penicillin, Nathan has a 75% chance of having the same allergy. The doctor performed a skin test to see whether Nathan would react to it. The test is 98% accurate. If the test predicts that Nathan is not allergic to penicillin, what is the probability after the test that Nathan is not allergic to the drug?
A.
0.1135
B.
0.2450
C.
0.9423
D.
0.9932
( ik its not B tho )
Answer:
A
Step-by-step explanation:
Answer:
C = .9423
Step-by-step explanation:
i took the test and got it right.
Line N passes through the points (-1,4) and (-1,-4)Which is true of line N?
Answer:
Line N is a vertical line with an undefined slope
Step-by-step explanation:
To find slope we do (y2-y1)/(x2-x1)
So we do that with (-1,4) and (-1,-4)
(-4-4)/(-1-(-1))
-8/0
Since the denominator is 0, that means the slope is undefined because you cannot divide by 0
Aiden is grocery shopping and wants to know which packages are cheapest. He is
looking at four different bottles of liquid laundry detergent: Bottle A is 175 fluid
ounces for $19.25; Bottle B is 138 fluid ounces for $8.97; Bottle C is 100 fluid ounces
for $8.00; and Bottle D is 72 ounces for $7.56. Assuming the detergent is of equal
quality, which bottle is the best deal?
Answer:Bottle B
Step-by-step explanation:
Given
Bottle A has 175 fluid ounce and cost [tex]\$19.25[/tex]
So it cost [tex]\frac{175}{19.25}=9.09\ \text{ounce per}\ \$[/tex]
Bottle B has 138 fluid ounce and cost [tex]\$8.97[/tex]
So it cost [tex]\frac{138}{8.97}=15.38\ \text{ounce per}\ \$[/tex]
Bottle C has 100 fluid ounce and cost [tex]\$8.0[/tex]
So it cost [tex]\frac{100}{8}=12.5\ \text{ounce per}\ \$[/tex]
Bottle D has 72 fluid ounce and cost [tex]\$7.56[/tex]
So it cost [tex]\frac{72}{7.56}=9.52\ \text{ounce per}\ \$[/tex]
So, Bottle B delivers more ounces at same price
The value of a car is $23,000. It loses 11% of its value every year. Find the approximate monthly decrease in value. Round your answer to the nearest tenth.
Answer:
$210.8 monthly.
Step-by-step explanation:
There are two ways to do this. You can either find out what 11% of $23,000 is by multiplying .11 by $23,000, then subtract this from $23,000 to find the yearly increase, where you can then divide by 12, or you can divide .11 by 12 and then multiply this by $23,000. I did the former and got $210.8 as an answer.
The first term of a geometric sequence is 1 and its common ratio is 6. What is the sixth term?
a. 31
b. 3176
c. 7776
d. 46,656
Answer:
c. 7776
Step-by-step explanation:
1, 6, 36, 216, 1296, 7776
Therefore, c. 7776
I hope this helped and have a good rest of your day!
Answer ASAP
Which is a y-intercept of the graphed function?
A. (-9,0)
B. (-3,0)
C. (0, -9)
D. (0, -3)
If you multiply any number by zero, your answer will be
that same number.
impossible.
zero.
negative.
Answer:
zero
Step-by-step explanation:
for example,
2 x 0 = 0
124 x 0 = 0
its some number zero times so when you multiply by zero, its zero
i need to find the value of x
Answer:
x = 24
Step-by-step explanation:
Since all the angles share a common vertex 'U' lying on a straight line QT.
Therefore, sum of all angles formed at U will be equal to 180°.
m∠RUQ + m∠RUS + m∠SUT = 180°
(2x - 4) + (3x + 5) + (2x + 11) = 180°
(2x + 3x + 2x) + (5 - 4 + 11) = 180
7x + 12 = 180
7x = 180 - 12
x = [tex]\frac{168}{7}[/tex]
x = 24
Therefore, value of x = 24
Elise is a project manager
In 2016 she earned a monthly salary of £2,100
in 2017 she had a 3% raise
Given that in 2017 Elise worked 42 hours per week for 45 weeks, work out her average pay per hour for the year
please help :(
Answer:
£11.85
Step-by-step explanation:
In the question, we are told that:
In 2016 she earned a monthly salary of £2,100
In 2017 she had a 3% raise
This means 3% of £2,100
3/100×£2,100 = £63
This means her salary for 2017 =
£63 + £2,100 =£2,163
Step 2
We are told in the question that she worked 42 hours per week for 45 weeks in 2017
Since her monthly pay for 2017 = £2,163
She worked 42 hours per week
There are 7 days in one week
The number of hours she worked per day = 42 hours ÷ 7 = 6 hours per day
4.345 weeks= 1 month
The number of hours she worked per month = 42 hours × 4.345 weeks
= 182.49 hours.
We can say that for 182.49 hours she was paid = £2,163
Her average pay per hour is calculated as:
If 182.49 hours = £2,163
1 hour = represented by Y
Cross multiply
182.49Y = £2,163
Y = £2,163 ÷ 182.49
Y = £11.852704258
Approximately = £11.85
Therefore, Elise Average pay per hour for the year = £11.85
Answer:
poopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopoop
Step-by-step explanation:
I need help with Tangents of circle problems
Answer:
With the information provided in picture, you can use the property of tangent line of circle to prove that two right triangle ACO and ABO are congruent (AO shared, ACO = ABO = 90 deg, OC = OB = radius of circle O).
Then AB = AC = 4
=> Hope this helps!
:)
WHAT IS THE CIRCUMFERENCE OF A TRIANGLE
Finding the Perimeter When Three Side Lengths are Known. Remember the formula for finding the perimeter of a triangle. For a triangle with sides a, b and c, the perimeter P is defined as: P = a + b + c.
|
NOTE~ idk ab the top ∧ but bottom ∨ im sure.
|
What is the Circumradius of a triangle?
Circumradius. The circumradius of a cyclic polygon is the radius of the circumscribed circle of that polygon. For a triangle, it is the measure of the radius of the circle that circumscribes the triangle. Since every triangle is cyclic, every triangle has a circumscribed circle, or a circumcircle.
last question of the day with 25 points.
help plzzz
I will give brainly for the fastest and with steps
Answer:
244 degrees
Step-by-step explanation:
Since one angle APE is 90 degrees, that means line segments AD and BE are perpendicular bisectors.
Since both segments go through the center, that means all the angles are central angles.
Since angle APE is 90 degrees, that also means that angle EPD is 90 degrees.
33k -9 = 90
33k = 99
k = 3
Since we know k we can substitute it to find angle CPD.
20 k + 4 = 20*3 + 4= 60+4= 64 degrees.
Central angles equal angles of arcs, so we can and angles APE, EPD, and DPC to find the measure of major arc CAD.
64+ 90 +90 = 244 degrees
I need help with this answer can you plz help
hurry i need it in 5 mins pls
What is the radius of a hemisphere with a volume of 86784{ cm}^3 to the nearest tenth of a centimeter?
Answer: 34.6 cm
Step-by-step explanation:
delta math
The radius of the hemisphere with a volume 86784cm³ as described is; 27.5cm
What is the radius of the hemisphere?It follows from quantity measurements of solid shapes that the Volume of a sphere is given by the formula;
V = 4/3(πr³)On this note, upon substitution;
86784 = (4/3) (3.14r³)
Hence, r³ = (86784 ×3)/(4 ×3.14)
r³ = 20728.7
r = ³√2.728.7
r = 27.5cm
Read more on radius of a hemisphere;
https://brainly.com/question/15514243
Maureen earned some money doing odd jobs last summer and put it in a savings account that earns 9% interest compounded quarterly. After 10 years, there is $300.00 in the account. How much did Maureen earn doing odd jobs?
Answer:
Maureen earned $123.19 doing odd jobs
Step-by-step explanation:
The compound interest formula is given by:
[tex]A(t) = P(1 + \frac{r}{n})^{nt}[/tex]
Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit year and t is the time in years for which the money is invested or borrowed.
In this question:
Compounded quarterly means that [tex]n = 4[/tex]
10 years, so [tex]t = 10[/tex]
9% interest, so [tex]r = 0.09[/tex]
There is $300.00 in the account, which means that [tex]A = 300[/tex]
How much did Maureen earn doing odd jobs?
This is P.
[tex]A(t) = P(1 + \frac{r}{n})^{nt}[/tex]
[tex]300 = P(1 + \frac{0.09}{4})^{4*10}[/tex]
[tex](1.0225)^{40}P = 300[/tex]
[tex]P = \frac{300}{(1.0225)^{40}}[/tex]
[tex]P = 123.19[/tex]
Maureen earned $123.19 doing odd jobs
The science of correct reasoning is called
Answer:
Logic
Step-by-step explanation:
Logic. the study of correct reasoning. Socratic method. question-and-answer dialogue in which propositions are methodically scrutinized to uncover the truth.
Answer:
logic
Step-by-step explanation:
Andrea uses 9.8 pints of blue paint to paint her bedroom walls. 2/5 of this amount is blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls?
Answer:
5.88 pints
Step-by-step explanation:
Well the amount of white paint is 3 / 5 of 9.8
0.6 * 9.8 = 5.88
Answer: 14.7 pints of white paint
IF two different colors were used.
IF she mixed paint to get a light blue, 3/5 of the total would be about 5.9 pints.
Step-by-step explanation:
If 9.8 is 2/5 of the total amount used, set up the equation as 9.8= 2x/5
You get the total amount of paint used is 24.5 pints. Subtract the 9.8 of blue to find the amount of white. That's 14.7 pints.
In practical, real life, a quart of paint covers about 100 square feet. That's an average 8 ft high by 12 ft wide wall.
So that is why I edited this answer. 24 pints is 3 gallons-- that is enough for 3 bedrooms.
And I wish that Math teachers used more common measurements of paint!
A.366
B.318
C.342
D.294
Answer:
318 mm2
Step-by-step explanation:
Please see the step-by-step solution in the picture attached below.
Hope this answer can help you. Have a nice day!
Answer:
[tex]318mm^{2}[/tex]
You can break the shape into pieces you can work with, and then add up the areas individually.
What are the solutions to the equation x2 - 8x = 10
Answer:
x = 4 ±√26
Step-by-step explanation:
Please write this as x^2 - 8x = 10, or x^2 - 8x - 10 = 0. " ^ " indicates exponentiation.
Let's complete the square:
x^2 - 8 x can be rewritten as
x^2 - 8x + 16 - 16, and so
x^2 - 8x = 10 becomes x^2 - 8x + 16 - 16 - 10 = 0, or
(x - 4)^2 = 26
Taking the square root of both sides, we get:
x - 4 = ±√26, or
x = 4 ±√26
Find m angle d for m angle b = 65
The figure is not drawn to scale
Answer:
Denote O as center of circle, draw OA, OC.
As property of tangent line from outside of circle (angle OAD = angle OCD = 90 deg):
=> AOC + D = 180
Moreover, angle AOC = 2 x angle B = 2 x 65 = 130
=> D = 180 - 130 = 50 deg
Hope this helps!
:)
The measure of the angle d for m angle b = 65 in the figure of circle and quadrilateral is 50 degrees. Option A is correct.
What is a measure of angle?The measure of angle between the two points of a ray or line is the measure of rotation between these two points. The angles are measured in degrees or radians.
The figure given in the problem contained a circle and a quadrilateral.
In this figure, the measure of the angle b is,
[tex]m\angle d =65^o[/tex]
Here, the two tangent lines AD and DC cuts the circle at point A and C respectively.
Let the center of the circle is O. Thus the angle b is equal to the angle AOC by the tangent line theorem as,
[tex]\angle O =2m\angle b=130 ^o[/tex]
The sum of angle AOC and the angle D is equal to 180 degrees. Therefore,
[tex]\angle AOC+m\angle d=180\\130++m\angle d=180\\m\angle d=180-130\\m\angle d=50^o[/tex]
Hence, the measure of the angle d for m angle b = 65 in the figure of circle and quadrilateral is 50 degrees. Option A is correct.
Learn more about the measure of angle here;
https://brainly.com/question/25716982
Referring to the table below, What is the probability of a student in the marching band being either female or a senior?
Answer:
a.
Step-by-step explanation:
P(F or S) = P(F) + P(S) - P(F & S)
= 0.46 + 0.22 - 0.12
= 0.56
Whoever answers this NOW will get brainliest
Answer:
I think is -x + 105/42y
Step-by-step explanation:
2(3/10)x - 5/7y - 4(5/6)y - 2(4/5)x
6/10x - 5/7y - 20/6y - 8/5x
6/10x - 8/5x - 5/7y - 20/6y
6-16/10x - 35+140/42y
-10/10x + 105/42y
-x + 105/42y
The rectangle below has an area of x^2-7x+10square meters and a width of x - 5 meters. What expression represents the length of the rectangle below? length=_____ meters.
Answer:
L = (x - 2) meters
Step-by-step explanation:
The area of the rectangle = (x² - 7x + 10) m²
The width = (x - 5) m
length = ?
Area of a rectangle = length × width
x² - 7x + 10 = L(x -5)
note L = length
divide both sides by (x-5)
(x² - 7x + 10)/(x - 5) = L
L = x² - 7x + 10 / (x -5)
Factorize x² - 7x + 10
find the numbers you can multiply to give you 10 and also add to give you -7
The numbers are -2 and -5. Therefore,
x² - 2x - 5x + 10 = 0
x(x - 2) - 5(x - 2) = 0
(x-5)(x-2) = 0
Let us go back to our division
L = x² - 7x + 10 / (x -5)
x² - 7x + 10 = (x-5)(x-2)
L = (x-5)(x-2) / (x -5)
L = (x - 2) meters
Find the median of the data set: 27, 88, 41, 80, 60, 13, 74, 33, 80, 91, 80.
Answer:
80
Step-by-step explanation:
Answer:
74
Step-by-step explanation:
To find the median, you must order all of the numbers from least to greatest. Least to greatest: 13, 27, 33, 41, 60, 74, 80, 80, 80, 88, 91 Then, you must find the middle number in that set.
13, 27, 33, 41, 60, 74, 80, 80, 80, 88, 91
So, in conclusion, the median is 74.
Desmond lives in Melbourne and is taking a trip to Sydney. He can travel to Sydney and back in 333 different ways: by bus, cab, or train. Desmond chooses how to get to Sydney and back at random.
Which of these tree diagrams can be used to find all of the different ways that Desmond can get to Sydney and back?
Choose all answers that apply:
Choose all answers that apply:
(Choice A)
A
Diagram A
(Choice B)
B
Diagram B
\text{B}= \text{Bus} \\ \text{C}= \text{Cab} \\ \text{T}= \text{Train}B=Bus
C=Cab
T=Train
Diagram A:
Diagram B:
Answer:
Diagram B
Step-by-step explanation:
Please help with this
Answer: She sold 5 shirts
Step-by-step explanation: 100 + 12x6 + 5t + 7x4 + 5x5 - 8x5
you get 100 + 72 + 28 + 25 - 45 + 5t
You add all that and subtract but not the 5t and you get 180 then you can do 205-180 and get 25 then you you find what times 5 equals 25 and then you get 5 t shirts sold
1) 26 = 8 + v 2) 3 + p = 8
Answer:
268+v2)3+p=8 =p=−3v2−796
Step-by-step explanation:
Let's solve for p.
(268+v2)(3)+p=8
Step 1: Add -804 to both sides.
3v2+p+804+−804=8+−804
3v2+p=−796
Step 2: Add -3v^2 to both sides.
3v2+p+−3v2=−796+−3v2
p=−3v2−796
Hope this helps.
i need to know the answer
Solution:
X= 39 degree.
[being alternate angles]
Alternate angles are always equal
Hope it will help you
2. Evaluate f(3) for f(x) = 2x - 9
Answer:
-3
Step-by-step explanation:
[tex]f(x) = 2x - 9[/tex]
[tex]f(3) = 2(3) - 9\\f(3) = 6 - 9\\f(3) = -3[/tex]
Flora made 4 withdrawals of $80 each from her bank account. What was the overall change
in her account?
The total change in her account is $
Answer:
320$
Step-by-step explanation:
Answer:
Step-by-step explanation:
80 divided by 4 should be 20? sorry if i am wrong