What is the value of the inequialty?
Answer:
C. 32
Step-by-step explanation:
substitute x=5
2(5) squared-2(5+4)
2(25)-2(5+4)
50-2(9)
50-18
32
The mean June midday temperature in Desertville is 36°C and the standard deviation is 3°C.Assuming this data is normally distributed, how many days in June would you expect the midday temperature to be between 39°C and 42°C?
Answer:
The value is [tex]E(X) = 4 \ days[/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 36^oC[/tex]
The standard deviation [tex]\sigma = 3^oC[/tex]
Generally the probability that in June , the midday temperature is between
39°C and 42°C is mathematically represented as
[tex]P(39 < X < 42) = P(\frac{39 - 36}{3} < \frac{X - \mu }{\sigma} < (\frac{42 - 36}{3} )[/tex]
[tex]\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
[tex]P(39 < X < 42) = P(1 < Z <2 )[/tex]
=> [tex]P(39 < X < 42) = P(Z < 2) - P( Z <1 )[/tex]
From the z table the area under the normal curve to the left corresponding to 1 and 2 is
P(Z < 2) = 0.97725
and
P(Z < 1) = 0.84134
[tex]P(39 < X < 42) = 0.97725 - 0.84134[/tex]
=> [tex]P(39 < X < 42) = 0.13591[/tex]
Generally number of days in June would you expect the midday temperature to be between 39°C and 42°C
[tex]E(X) = n * P(39 < X 42 )[/tex]
Here n is the number of days in June which is n = 30
[tex]E(X) = 30 * 0.13591[/tex]
=> [tex]E(X) = 4 \ days[/tex]
In a certain card game, only the thirteen cards that are Hearts are used, and each player is dealt a hand of just two cards. How many ways are there to deal hands of two cards each to each of three players from a 13-card deck comprised of just the Hearts?
Solution :
It is given that only 13 cards that are Hearts that is used in a certain game.
And 2 hearts to each of the 3 players.
Therefore, the number of ways is
= [tex]$^{13} C_2 \times ^{11} C_2 \times ^{9} C_2$[/tex]
[tex]$= \frac{13 !}{11 ! \times 2!} \times \frac{11 !}{9 ! \times 2!} \times \frac{9 !}{7 ! \times 2!} $[/tex]
[tex]$=\frac{13 !}{7! \times 2! \times 2! \times 2!}$[/tex]
= 120 number of ways
Sam spent $16 on fruit at the grocery store he spent a total of $40 at the store what percentage of the total did he spend on fruit
(please answer fast)
which of the following graphs shows a proportional relationships
Answer:
It is A
Step-by-step explanation:
The proportan go's through the orgin also known as 0
Answer:
A
Step-by-step explanation:
In the number 8.028 does one 8 have a value of 100 times the other 8 ?
Answer:
No, The 8 in the ones place of the decimal and the 8 in the thousands. Decimals go by variables of 10 if that makes sense
so hopping from the 8 in the ones place it would go 10, 100,1000.
Therefore the statement is false because the value between the eitghts is not 100 its 1000
My last 2 questions so I felt generous. (Answer them for brainiest)
Answer:
Step-by-step explanation:
19. 18-4.62=13.38 to spend on the systems or 6.69 a piece
20. 45000+300m=60000
m=50
45000+300m>60000
He needs at least 50 machines to make the 60000.
Is AB a median, an altitude, or neither?
-
CAN ANYONE HELP ME ASAP? I’ll mark brainliest!!!
Answer:
4. Median
5. Altitude
6. Altitude
7. Neither
Relate a vertical line test to understanding functions.
a.
Each horizontal line drawn through the graph will intersect a function in only one location
c.
Each vertical line drawn through the graph will intersect a relation in only one location
b.
Each vertical line drawn through the graph will intersect a function in many locations
d.
Each vertical line drawn through the graph will intersect a function in only one location
Answer:
B or the third option you put.
Step-by-step explanation:
Starting at sea level, a submarine descended at a constant rate to a depth of −56 mile relative to sea level in 4 minutes.
What was the submarine's depth relative to sea level after the first minute?
Enter your answer in the box as a fraction in simplest form.
mile plz help
Answer:
Step-by-step explanation:
-14 was the depth. constant rate -14, -28, -42, -56
Mr. hodges wants to build a fence
Answer:
96 feet
Step-by-step explanation: took quiz pls mark brainliest
300x + 6,250=10,000
Answer:
x= 25 /2 and/or 12.5
Step-by-step explanation:
Let's solve your equation step-by-step.
300x+6250=10000
Step 1: Subtract 6250 from both sides.
300x+6250−6250=10000−6250
300x=3750
Step 2: Divide both sides by 300.
300x /300 = 3750 /300
x= 25 /2
Answer: X is 3450
YOUR WELCOME HAVE A GREAT DAY
Draw a picture that shows an example of a product of two even numbers. Write the matching multiplication sentence
How do you draw picture of that ??
Answer:
I guess make a certain amount of objects and divide them individually between two or more things or people within an even number. Example: 20 apples split into and even amount which would be 10 amongst let's say 2 ppl.
2. What is the location of item 2?
Answer:
(3,1)
Step-by-step explanation:
Solve the following equation by factoring.
2x2−7x+3=0
Answer:
x=3
Step-by-step explanation:
Step 1: Factor left side of equation.
(2x−1)(x−3)=0
Step 2: Set factors equal to 0.
x−3=0
ANSWER:
x=3
Which decimal is equivalent to
19/50
A.
0.19
B.
0.34
C.
0.38
D.
2.63
Answer:
c
Step-by-step explanation:
Equivalent to 31/4 - ( - 5/8 )
if m
please explain not sure
if m what? I'm confused
Joe plans to save the same amount of money for 8 weeks. He wants to buy a new pair of jeans for $80 and a pair of shoes for $80. How much money should he save each week to buy both items?
Answer:34
Step-by-step explanation:
7839
Answer:
20
Step-by-step explanation:
the other guys answer is 34 and its incorect
Which could be the first step in simplifying this expression? Check all that apply.
(x cubed x Superscript negative 6 Baseline) squared
(x Superscript negative 18 Baseline) squared
(x Superscript negative 3 Baseline) squared
(x Superscript negative 2 Baseline) squared
x Superscript 6 Baseline x Superscript negative 12 Baseline
x Superscript 5 Baseline x Superscript negative 4
Answer:
I think that the answers are B and D.
Step-by-step explanation:
(x^-3)^2
x^6 x^-12
I'm so sorry if it's wrong.
Answer:
The answer is C, D, E
Step-by-step explanation:
ON EDGE 2021
Mark is 4 times as old as his son James. The sum of their ages is 50. What is Mark's Age?
Answer:
50
Step-by-step explanation:
if we sad the son is 10 years old so 40*10=40 this the mark age then and 10 his son age =50
Write the slope-intercept form of the equation of the line.
slope = 1, y, int = -2
Answer:
y = x - 2
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Slope m = 1
y-intercept b = -2
Step 2: Write linear function
y = x - 2
Answer: B, y=x-2
Step-by-step explanation:
The slope-intercept form is y=mx+b where m=slope and b=y intercept
therfore, subtituting 1 for m and -2 for b
y=x-2
I NEEDS MORE HEEEELLLLLLLPPPPPPP
The measures of the angles of a triangle are shown in the figure below. Solve for x.
(4x+6)
36°
Answer:
Step-by-step explanation:
How to answer this question please?
Ronny is taking a jar with 50 dimes and quarters to Coin Master to redeem for dollar bills. The total value of his jar is $8.
Complete the system of equations below to represent the number of quarters, q, and the number of dimes, d, in the jar
The required system of the equation that represents the number of quarters, q, and the number of dimes, d, in the jar is 0.10d + 0.25q = 8 and d + q = 50.
Given that,
Ronny is taking a jar with 50 dimes and quarters to Coin Master to redeem for dollar bills. The total value of his jar is $8.
Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.
Here,
Let the number of the dimes be d and the number of the quarters be q,
According to the question,
The total of the coins is 50,
d + q = 50,
And this coins values is $8,
0.10d + 0.25q = 50 [sinnce value of one dime = 0.10 and value of one quarter is 0.25]
Thus, the required system of the equation that represents the number of quarters, q, and the number of dimes, d, in the jar is 0.10d + 0.25q = 8 and d + q = 50.
Learn more about simultaneous equations here:
https://brainly.com/question/16763389
#SPJ2
What is the measure of UVW in the triangle shown?
A. 140°
B. 50°
C. 60°
D. 10°
Answer:
b
Step-by-step explanation:
40 + 90 =130
180-130=50
14Points An art museum has 1,025 paintings to divide equally among 20 rooms. How many more paintings does it need so that every room has the same number of paintings?
Answer:
15 more paintings
Step-by-step explanation:
How much does it cost Carol for a 60-day supply of cat food for her two cats?
Answer:
its 120
Step-by-step explanation:
60 multiply by 2 is 120
Find the simple interest: Principal: $650 Interest Rate: 14% Time: 4 years
Answer:
292.50 dollars
Step-by-step explanation:
P = 650 is the the principal.
r = 0.09 is the interest rate in decimal form.
t = 5 is the number of years.
i = 650*0.09*5
i = 292.50 is the simple interest.