Please hurry due today I will give you brainlest
Which numbers are solutions of x² + 20 = 9x + 2? choose
Answer:
x = 6 or x = 3
Step-by-step explanation:
Solve for x over the real numbers:
x^2 + 20 = 9 x + 2
Subtract 9 x + 2 from both sides:
x^2 - 9 x + 18 = 0
The left-hand side factors into a product with two terms:
(x - 6) (x - 3) = 0
Split into two equations:
x - 6 = 0 or x - 3 = 0
Add 6 to both sides:
x = 6 or x - 3 = 0
Add 3 to both sides:
Answer: x = 6 or x = 3
If a ball is thrown upward at 64 feet per second from a height
of 4 feet, the height of the ball can be modeled by
S = 4 +64t - 16t² feet, where t is the number of seconds
after the ball is thrown. How long after the ball is thrown is the
height 32 feet?
[tex]S=4+64t-16t^2\implies \stackrel{\textit{at a height of 32}}{32=4+64t-16t^2}\implies 16t^2-64t-4+32=0 \\\\\\ 16t^2-64t+28=0\implies 4(4t^2-16t+7)=0\implies 4t^2-16t+7=0 \\\\\\ ~~~~~~~~~~~~\textit{quadratic formula} \\\\ \stackrel{\stackrel{a}{\downarrow }}{4}t^2\stackrel{\stackrel{b}{\downarrow }}{-16}t\stackrel{\stackrel{c}{\downarrow }}{+7}=0 \qquad \qquad t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a}[/tex]
[tex]t= \cfrac{ - (-16) \pm \sqrt { (-16)^2 -4(4)(7)}}{2(4)} \implies t = \cfrac{ 16 \pm \sqrt { 256 -112}}{ 8 } \\\\\\ t= \cfrac{ 16 \pm \sqrt { 144 }}{ 8 }\implies t=\cfrac{16\pm 12}{8}\implies t= \begin{cases} \frac{1}{2}&\textit{on the way up}\\\\ \frac{7}{2}&\textit{on the way down} \end{cases}[/tex]
Three consecutive integers have a sum of 81. Find the integers
Answer:
26, 27, 28
Step-by-step explanation:
Let the 3 integers be: x, x+1, x+2
x+x+1+x+2 = 81
3x+3 = 81
3x = 78
x = 26
x+1 = 27
x+2 = 28
Find the function f whose zeros are 6 and 3
If -3/4 is the dividend and 2/5 is the divisor what is the quotient
[tex]-\cfrac{3}{4}\div \cfrac{2}{5}\implies -\cfrac{3}{4}\cdot \cfrac{5}{2}\implies -\cfrac{15}{8}\implies {\Large \begin{array}{llll} -1\frac{7}{8} \end{array}}[/tex]
Help me solve this please
Answer: a. 291/2020 b. 77/465 c. 874/2020 d.145/376 e. 41/157 f. 41/157 g. 53/157 h. 433/465 I. 335/376
Step-by-step explanation:
A. 291- column of loyal customers for 10-14 years over total amount. Question about the overall group 2020.
B. 77- people in the east that have been loyal 10-14 years in the east over the east group that's given that they're apart of 465.
C. 874 - customers loyal for more than 10 years in the west over the total amount. Question about the overall group 2020.
D.145 (45+100) - customers loyal for over 10 years in the west over the west group 376.
E. 41 people that have been loyal less than 1 year in the west over the group that has been loyal for less than 1 year 157.
F. 53 people that have been loyal less than 1 year in the south over the group that has been loyal for less than 1 year 157.
G.433 (465-32) people that have been loyal more than a year in the east over the east group 465.
I.335 (376-41) people that have been loyal in the west over the west group 376.
Which conversion factors can be used to multiply to 4 km/min to get meters per hour?Select each correct answer. 1 km1000 m1 h60min60min1 h1000 m1 km
Step 1: Concept
To convert km to meters you will multiply with 1000.
To convert minute to hour you will divide by 60
Step 2: Convert
[tex]\begin{gathered} 4\operatorname{km}\text{ to meters = 4 }\times\text{ }\frac{1000m}{1\operatorname{km}}\text{ } \\ 1\text{ min to hour = 1}\min \times\frac{1\text{hour}}{60\text{ min}} \end{gathered}[/tex]Step 3: Final answer
[tex]\frac{1000m}{1\operatorname{km}}\text{ and }\frac{1hour}{60\min }[/tex]Option B and D
Starting at the origin (0,0), what is the ordered pair of a value that is 4 units to the left and 5 units up?
(-4,5)
4 to the left on the axis is neg. 5 units up on the y axis makes it positive.
Mika opened a bank account that earns simple interest with an initial deposit of $2,200.She made no other transactions throughout the year. At the end of the year, Mika had $2,260.50 in her account. What was the simple interest rate?
Answer:
2.75%
Step-by-step explanation:
2260.5-2200=60.5 the extra
60.5/2200=0.0275*100=2.75%
HELP ASP YOULL GET 20 POINTS AND BRAINLIEST!!!
Answer:
7 Games
Step-by-step explanation:
1. take the information and put it into a equation (being y=3.25x+3 or f(x)=3.25+3)
2. replace the x with a whole number because you can't bowl half a game.
Ex: f(3)=12.75 or f(6)=22.50
3. The highest you can go without going over your money is 7 games ($25.75) leaving you with a total of 2.25.
On a given planet the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is 80 KG weighs 80 n calculate the mass of another object that weighs 70 n
We are told that the weight of an object varies directly with the mass of the object. This basically means that if w is the weight and M is the mass then these two magnitudes are related by the following expression:
[tex]w=k\cdot M[/tex]Where k is a constant.
We know that an object with a mass of 80kg weights 80 newtons. Then for this object we have w=80kg and M=80n so we get:
[tex]80n=k\cdot80kg[/tex]We divide both sides of this equation by 80:
[tex]\begin{gathered} \frac{80n}{80}=\frac{k\cdot80kg}{80} \\ 1n=k\cdot1kg \end{gathered}[/tex]Here it's important to remember that 1 newton (i.e. 1n) is equal to:
[tex]n=\frac{kg\cdot m}{s^2}[/tex]Then we get:
[tex]1\frac{kg\cdot m}{s^2}=k\cdot1kg[/tex]We divide both sides by 1 kg:
[tex]\begin{gathered} \frac{1\frac{kg\cdot m}{s^2}}{1kg}=\frac{k\cdot1kg}{1kg} \\ 1\frac{kg\cdot m}{kg\cdot s^2}=k\cdot\frac{1kg}{1kg} \\ k=1\frac{m}{s^2} \end{gathered}[/tex]So now that we found k we have the following expression for the weight of an object as a function of its mass:
[tex]w=M\cdot1\frac{m}{s^2}[/tex]For an object that weights 70n we get:
[tex]\begin{gathered} 70n=M\cdot1\frac{m}{s^2} \\ 70\frac{kg\cdot m}{s^2}=M\cdot\frac{m}{s^2} \end{gathered}[/tex]We divide both sides by 1 m/s²:
[tex]\begin{gathered} \frac{70\frac{kg\cdot m}{s^2}}{1\frac{m}{s^2}}=\frac{M\cdot\frac{m}{s^2}}{1\frac{m}{s^2}} \\ 70\frac{kg\cdot m\cdot s^2}{m\cdot s^2}=M\cdot\frac{m\cdot s^2}{s^2\cdot m} \\ 70kg=M \end{gathered}[/tex]AnswerSo the mass of an object that weights 70n is 70kg.
6. Find the sale prices. a. $4,200 with a 35% markdown b. $5,000 with a 44% markdown
Answer: The Correct Sales Prices:
a. $2,730
b. $2,800
Step-by-step explanation:
a. $4,200 x 35%
$4,200 x .35 = $1,470
$4,200 - $1,470 = $2,730
b. $5,000 x 44%
$5,000 x .44 = $2,200
$5,000 - $2,200 = $2,800
write a quadratic function in standard form containing the point (5,-6) and x-intercepts -7 and 3
WILL GIVE BRAINLIEST
Answer:
[tex]y=-\dfrac{1}{4}x^2-x+\dfrac{21}{4}[/tex]
Step-by-step explanation:
Intercept form of a quadratic equation
[tex]y=a(x-p)(x-q)[/tex]
where:
p and q are the x-intercepts.a is some constant.Given:
x-intercepts: -7 and 3Point on the curve: (5, -6)Substitute the given values into the formula and solve for a:
[tex]\begin{aligned} y&=a(x-p)(x-q)\\\\\implies-6&=a(5-(-7))(5-3)\\-6&=a(12)(2)\\-6&=24a\\a&=\dfrac{-6}{24}\\\implies a&=-\dfrac{1}{4}\end{aligned}[/tex]
Substitute the given x-intercepts and the found value of a into the formula:
[tex]\implies y=-\dfrac{1}{4}(x+7)(x-3)[/tex]
Expand to standard form:
[tex]\implies y=-\dfrac{1}{4}(x^2-3x+7x-21)[/tex]
[tex]\implies y=-\dfrac{1}{4}(x^2+4x-21)[/tex]
[tex]\implies y=-\dfrac{1}{4}x^2-x+\dfrac{21}{4}[/tex]
explain why this is an error. What should she have done?
Answer:
3y = 80v - x
Step-by-step explanation:
she need to change the operation. x should be –
A weather researcher compared average monthly temperature data for Rio deJaneiro, Brazil, and Caracas, Venezuela.Rio de Janelro CaracasMean 76.5°F74.5°FRange 11.1°F17.4°FBased on these data, which statements are true?A. On average, Rio de Janeiro has a higher monthly temperature.However, temperatures in Caracas vary more.B. On average, Rio de Janeiro has a higher monthly temperature. Itsmonthly temperatures also vary more.C. On average, Caracas has a higher monthly temperature. However,temperatures in Rio de Janeiro vary more.D. On average, Caracas has a higher monthly temperature. Itsmonthly temperatures also vary more.
The mean and the average values are the same. They represent a dataset by calculating the central value.
The range can be understood as the variation of the data. The higher the range, the wider the variation.
From the table, we can see the average temperature of Rio de Janeiro is higher than in Caracas.
We can also see the variation of the temperature is higher in Caracas than in Rio de Janerio.
This corresponds to choice A.
Mr. Burke wants to invest part of his lottery winnings in a safe fund that earns 2.5% annual interest and the rest in a
risky fund that expects to yield 8% annual interest. The amount of money invested in the safe fund, x, is to be exactly
four times the amount invested in the risky fund, y. Use the system of equations to determine the amount to be
invested in each fund if a total of $1080 is to be earned at the end of one year.
Answer:
eywgw6 the car is in the car is in the car is in
Step-by-step explanation:
Wu and I will be in the car is in the car is in the car is in the car is here and we can 4
Answer:
Safe fund = $24,000
Risky fund = $6,000
Step-by-step explanation:
Definition of variables:
Let x = the amount of money invested in the safe fund.Let y = the amount of money invested in the risky fund.Given information:
Safe fund = 2.5% annual interest.Risky fund = 8% annual interest. Total interest earned at the end of one year = $1080.The amount of money invested in the safe fund, x, is to be exactly four times the amount invested in the risky fund, y.Convert the percentages into decimal form:
[tex]\implies 2.5\%=\dfrac{2.5}{100}=0.025[/tex]
[tex]\implies 8\%=\dfrac{8}{100}=0.08[/tex]
Create a system of equations from the given information and defined variables:
[tex]\begin{cases}0.025x+0.08y=1080\\x=4y\end{cases}[/tex]
Substitute the second equation into the first equation and solve for y:
[tex]\implies 0.025(4y)+0.08y=1080[/tex]
[tex]\implies 0.1y+0.08y=1080[/tex]
[tex]\implies 0.18y=1080[/tex]
[tex]\implies \dfrac{0.18y}{0.18}=\dfrac{1080}{0.18}[/tex]
[tex]\implies y=6000[/tex]
Substitute the found value of y into the second equation and solve for x:
[tex]\implies x=4(6000)[/tex]
[tex]\implies x=24000[/tex]
Therefore, the amount invested in each fund was:
Safe fund = $24,000Risky fund = $6,00014. In baseball, a player's batting average is calculated by using the formula. A=h/b,
where A is the batting average, h is the number of hits, and b is the number of at
bats.
a. Solve the equation for h. What is the equation to solve h
Answer: h = b/A
Explanation: If i hit 5 out of 10 balls thrown, my batting average is 2.
.5 = 5/10.
If my batting average is .5, and 10 balls were thrown, I only hit half or 5 of them. 5 = 10/.5
A bank account gathers compound interest at a
rate of 5% each year.
Another bank account gathers the same amount of
money in interest by the end of each year, but
gathers compound interest each month.
If Cameron puts £4200 into the account which
gathers interest each month, how much money
would be in his account after 2 years and
7 months?
Give your answer in pounds to the nearest 1p.
Based on the amount that Cameron invests in the bank account that gathers interest each month, the amount in the account after 2 years and 7 months is £4,777.81
How to find the amount in the account?The number of periods in months is:
= 2 years and 7 months
= 31 months
The periodic interest in months is:
= 5% / 12 months
= 5/12%
The amount in the bank account after 2 years and 7 months is:
= 4,200 x (1 + 5/12%)³¹
=£4,777.81
In conclusion, the amount after 2 years and 7 months have elapsed is £4,777.81
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A right rectangular prism is packed with cubes of side length 1/8 inch. if the prism is packed with 16 cubes along the length, 8 cubes along the width, and 6 cubes along the height, what is the volume of the prism?A. 1 1/2 cubic inchesB. 1 3/4 cubic inchesC. 2 1/2 cubic inchesD. 2 3/4 cubic inches
Answer:
A. 1 1/2 cubic inches
Explanation:
We are told that the side length of the cube is 1/8 of an inch. Furthermore, we are also told that the rectangular prism fits 16 cubes along the length, 8 cubes along the width, and 6 cubes along the height. This means the measures of the dimensions of the prism are
[tex]\begin{gathered} \frac{1}{8}\times16\: in=2\: in \\ \end{gathered}[/tex][tex]\frac{1}{8}\times6\: in=0.75\: in[/tex][tex]\frac{1}{8}\times8\: in=1\: in[/tex]Therefore, the volume of the prism is
[tex]2\: in\times0.75\: in\times1\: in=1\frac{1}{2}\: in^3[/tex]Hence, the volume of the prism is 1 1/2 cubic inches
Hello, I’m struggling with my geometry homework
Answer
Explanation
Given:
m
To determine the mAs we can see, CD form a straight line, so the angle of it must be 180°. Now, we can get the m[tex]\begin{gathered} m\angle APE+m\angle APD=180 \\ 67+m\angle APD=180 \\ Simplify\text{ and rearrange} \\ m\angle APD=180-67 \\ m\angle APD=113\degree \end{gathered}[/tex]Since the line ED is at the center of the circle:
[tex]m\angle APD=m\hat{AD}[/tex]Therefore,
[tex]m\hat{AD}=113\degree[/tex]Identify the transformations for the function below. Check all that applyf(x) = -x2 - 4DilationHorizontal ShiftVertical ShiftReflection
Parent function:
[tex]f(x)=x^2[/tex]Transformations:
[tex]f(x)=a(x-h)^2+k[/tex]a indicates a reflection acrross x-axis (if it is a<0) and/or a stretch or shrink
h indicates a horizontal translation
k indicates a vertical translation
As you have:
[tex]undefined[/tex]You get paid an annual salary of $67,100/year. You get paid bi-
weekly. Calculate the gross pay.
Demarcus and Lauren each take out a $90,000 loan for a new condo. Each has to repay the loan in 10 years. Demarcus will pay an interest rate of 2.8% per year. His monthly payments will be $771. Because Lauren has a lower credit score, she will have to pay an interest rate of 3.7% per year. Her monthly payments will be $840. How much more will a $90,000 loan cost Lauren than Demarcus?
The amount that a $90,000 loan cost Lauren than Demarcus will be $8280.
How to calculate the value?From the information, Demarcus and Lauren each take out a $90,000 loan for a new condo and each has to repay the loan in 10 years. It should be noted that 10 years in months will be:
= 10 × 12 = 120 months
The difference in the amount paid as a result of the credit score will be:
= ($840 × 120) - ($771 × 120)
= $100800 - $92520
= $8280
Therefore, the amount is $8280.
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This is my question…
Solution
otal number of cCustomer = 11 + 9 + 11 + 5 + 5 + 1 + 3 = 45
Let A denotes the event that the Customer waited for at least 12 minutes
Let B denotes the event that the Customer waited between 8 and 15 minutes
[tex]\begin{gathered} n(A)=5+5+1+3=14 \\ n(B)=11+5=16 \\ n(A\cap B)=5 \end{gathered}[/tex]We want to find
[tex]p(A\cup B)[/tex][tex]\begin{gathered} p(A\cup B)=p(A)+p(B)-p(A\cap B) \\ p(A\cup B)=\frac{14}{45}+\frac{16}{45}-\frac{5}{45} \\ p(A\cup B)=\frac{25}{45} \\ p(A\cup B)=\frac{5}{9} \\ p(A\cup B)=0.556\text{ (to the nearest thousandth)} \end{gathered}[/tex]hus, the probability is 0.556
Option D
A zucchini plant in Darnell's garden was 10 centimeters tall when it was first planted. Since then, it has grown approximately 0.5 centimeters per day. a. Write a rule to describe the function. b. After how many days will the zucchini plant be 0.185 meters tall?
a) g(x) = 10 + 0.5x
b) 17 days
Explanations:Let the number of days be represented by x
Let the intial height of the zucchini plant be g₀
g₀ = 10 cm
Size of growth per day = 0.5 cm
Let the growth after x days be represented by g(x)
a) The rule that represents the function is therefore:
g(x) = g₀ + 0.5x
g(x) = 10 + 0.5x
b) After how many days will the Zucchini pant be 0.185 meters tall
That is g(x) = 0.185 meters
since 1 meter = 100 cm
g(x) = 0.185 x 100 cm
g(x) = 18.5 cm
Thereofre substitute g(x) = 18.5 into the equation g(x) = 10 + 0.5x
18.5 = 10 + 0.5x
18.5 - 10 = 0.5x
0.5x = 8.5
x = 8.5 / 0.5
x = 17
The zucchini plant will be 0.185 meters tall after 17 days
consider the circle centered at the origin and passing through the point (-2,0). (a) Give the equation of the circle.
As the circle is centered in the origin , we only need to know the radius of the circle. The radius is the distance from (0,0) to (-2,0) and it is 2. So the equation is
[tex]x^2+y^2=2^2[/tex]In 2012, the U.S. population was about
314 million. How many people over the
age of 64 were in the U.S.?
There are 38,936,000 people over the age of 64 were in the U.S.
Option 2 is true.
What is Percentage?
A relative value indicating hundredth part of any quantity is called percentage.
Given that;
In 2012, the U.S. population was about 314 million.
Now,
Total population = 314,000,000
In the pie chart, The percent of people over the age of 64 were in the U.S will be 12.4%
Hence, Solve as;
Number of people over the age of 64 = 314,000,000 × 12.4%
= 314,000,000 × 12.4 / 100
= 31,400,00 × 12.4
= 38,936,000
Thus,
There are 38,936,000 people over the age of 64 were in the U.S.
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The product of 3 and the difference of a number and 1
Where”a number” is the letter x
The aquarium has 6 fewer yellow fish than green fish. 40% of the fish are yellow. How many green fish are in the aquarium? Show your work
Answer: 18 fishes
Step-by-step explanation:
y=0.40(y+g)(2)
g-6=0.40(g-6)+0.40g
=0.40g-2.4+0.40g
=3.6/0.2
g=
P
TU =
UV =
32°
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5.5 cm
3.1 cm
VW-
Tech Support
151°
S
cm
cm
Q
Look carefully at quadrilateral PQRS.
Consider the transformation Rz (PQRS) that produces its image, quadrilateral
TUVW.
Find all the following:
cm
147°
3.8 cm
6.0 cm
30°
R
N
Answer:
Step-by-step explanation: