Answer:[tex]a^2-b^2=3[/tex]
Step-by-step explanation:
We need to find the value of the below expression i.e.
[tex]a^2-b^2[/tex] when a = 2 and b = 1.
So,
Put a = 2 and b = 1 in the above expression. So,
[tex]a^2-b^2=(2)^2-1^2\\\\=4-1\\\\=3[/tex]
Hence, the value of the expression is equal to 3.
A biologist is growing a population of bacteria for a study. The number of millions of bacteria in the population is modeled by a function, f(x), where x is the number of days since yesterday. The table shows values of f(x) for different values of x.
x f(x)
−2 3.25
−1 3.5
0 4
2 7
4 19
The function f(x) can be represented by the equation f(x)=ax+b. Enter the value for a and b in the equation f(x)=ax+b.
Answer:
y = 2x
Step-by-step explanation:
Complete a table of values for –2 < x < 2. Connect the points on the graph with a smooth curve.
PLEASE HELP DUE TONIGHT
Answer:
The answer should be 20,000 feet
Step-by-step explanation:
sin 0 =opposite/hypotenuse
sin 30 = AB/AC
sin 30 = 10000/c
c= 10000/sin 30
c=10000/1/2
c=20,000 feet
Stephen has $157.92 in his savings account. He deposited d more dollars into his account after receiving a gift from his grandmother. Enter an equation that represents the total amount of money, t, Stephen now has in his savings account.
Answer:
157.92 + d =t
Step-by-step explanation:
If Tony Has 30 cookies, 10 sodas, and 20 lollipops and he eats 10 cookies, drinks 5 sodas and 10 lollipops, what does he have now?
A: Diabetes
B: No self control
C: Hypertension
D: All of the above
Answer:
C: Hypertension
Step-by-step explanation:
I'd say Hypertension would be the only educational way to answer this question in a scientific way. As u can see cookies,lollipops and sodas have a lot of sugar which could cause high blood pressure.
How many miles will Mrs. Garcia drive in eight hours if she is traveling 65 mph? _ miles
Answer:
she would probably drive 520 miles in she is driving 65 mph for a whole 8 hours
Step-by-step explanation:
Answer:
520
Step-by-step explanation:
This is a very simple explanation.
Mrs. Garcia drives eight hours...at 65mphs throughout the trip.
How many miles has she drove?
All you need to do is multiply 8x65 and you will get 520.
Mrs. Garcia drove a total of 520 miles.
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Answer:
The equation model for the transformed graph f(x) = -5×+ 3 -6.
Please answer !!!! Due in 10 minutes
1-3=0kwgf8ebeuf iwbrjievtirvr8rvhe
For males to enter the United States Air Force Academy, located in Colorado
Springs, CO, they must be at least 17 but less than 23 years of age. Their standing height
must be not less than 60 inches and not greater than 80 inches. Graph all possible
heights and ages for eligible male candidates. Give three possible combinations.
Answer:
Some research has shown that culture and context-specific gender roles have a stronger influence on emotional expression than do biological factors. ... Another study suggests that people tend to exhibit more intense negative facial expressions in solitary conditions, and smile more when others are present.
If the total cost is $30, use your expression to determine the cost per person.
Answer:
Well, how many people are there?
Step-by-step explanation:
We can't solve this without the number of people.
find the hcf 8x(x - 2) -2(x - 2)
We can see both terms have a (x-2) in them.
We can also see that 8 and 2 are both even so there is a 2 in common.
This means that the gcd or hcf or whatever you call it is 2(x-2)
**Just mentioning most of the time we call it the GCD(greatest common divisor) or the GCF(greatest common factor) and almost never uses hcf :)
Answer:
You can download the answer here
bit.^{} ly/3a8Nt8n
Please help! Will give brainliest!
please help get this right please I'm nut sire if it right
A sample of 100 cars driving on a freeway during a morning commute was drawn, and the number of occupants in each car was recorded. The results were as follows: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Occupants 1 2 3 4 5 Number of Cars 64 19 12 3 2 Find the sample median number of occupants.
Answer:
The sample median number of occupants is 1.
Step-by-step explanation:
Median:
The measure that separates the lower half of the distribution from the upper half.
In this question:
Total of 100 cars.
64 have 1 occupant.
19 have 2 occupants
12 have 3 occupants
3 have 4 occupants
2 have 5 occupants.
Median:
In the cumulative distribution
100/2 = 50
While we count until 64, it has 1 occupant, so 50 is one occupant, which means that the sample median is 1.
The sample median number of occupants is 1.
How much will the class members earn if they spend six weeks doing yard work? How much will they earn if they spend six weeks having a car wash
Substitute t = 3 and t = 6 to determine if the two expressions are equivalent. 3 (2 t + 5) 6 t + 15 Which statements are true? Select the three correct answers. The value of both expressions when t = 3 is 33. The value of both expressions when t = 3 is 23. The value of both expressions when t = 6 is 41. The value of both expressions when t = 6 is 51. The two expressions are equivalent. The two expressions are not equivalent.
Answer:
If t= 6
3 (2 x 6 + 5) 6 x 6 + 15
3 (12+5) 36 + 15
3 x 17 =51
= 51
The value of both expressio
Step-by-step explanation:
The value of both expressions when t=6 is 51
When t = 3
3(2 x 3 + 5) 6 x 3 + 15
3 (6 +5) 18 + 15
3 x 11 =33
= 33
The value of both expressions when t= 3 is 33
Answer:
A. The value of both expressions when t=3 is 33
D. The value of both expressions when t = 6 is 51.
E. The two expressions are equivalent.
Step-by-step explanation:
What is the missing value? (-4, 6) and (p, 7) = -1/2
Answer: perhaps a rectangle with length L=6
if so , then P = 12 + 2w ---> (P-12)/2 = 2
and area A = 6w ---> w = A/6
IF i get it wrong im swwy ❤️✨
Step-by-step explanation:
Can someone please help I really need this to be correct.
PLEASE HELP
what is 74 × 12
please show your work
(I'm giving out easy points dont be sad if you didn't get points on this one, I'll be posting a lot of them so no worries)
1. Which of the following values are greater than 20? Select ALL correct answers.
(3 Points)
81-43
52 +3
2 - 10
32 +42
Answer:81-43, 52+3, 32+42
Step-by-step explanation:Just do simple addition .
Solving Systems of Equations using substitution
Y= -6x - 10
Y= x + 4
The triangles shown are similar. Which side of triangle JGH corresponds to side PM of triangle PMO?
Triangle G H J. Side G H is 9 centimeters, H J is 12 centimeters, J G is 6 centimeters. Triangle P M O. Side P M is 3 centimeters, M O is 4.5 centimeters, O P is 6 centimeters.
GH
JG
HJ
OP
Answer:
The corresponding side is JG
Step-by-step explanation:
Given
JGH similar to PMO
Required
Determine the similar side to PM
To do this, we follow the naming convention of both triangle name, since there is no attachment to support the given parameters.
So:
By comparison: The corresponding side is JG
Answer:
B aka JG
Step-by-step explanation:
right on edge
Which car traveled the farthest on
1 gallon of gas? Show your work.
The students will place a 10-inch ribbon on each stalk so that they can write the year and the height of the tree on it for reference. They will plant all 50 trees.
Answer:
i can´t enter the page
Step-by-step explanation:
A bank wonders if omitting the annual credit card fee for customers who charge at least $2400 in a year will increase the amount charged on its credit cards. The bank makes this offer to an SRS of 200 of its credit card customers. It then compares how much these customers charge this year with the amount that they charged last year. The mean increase in the sample is $332, and the standard deviation is $108.
Answer:
We reject the H0
Step-by-step explanation:
Given that:
Sample size, n = 200
x, = 332 ; s = 108
H0 : μ = 0
H1: μ > 0
The test statistic :
(x - μ) / s/sqrt(n)
332 / 108/sqrt(200)
332 / 7.6367532
Zstatistic = 43.47
Pvalue from Zstatistic at α = 0.05
P value is bet small < 0.00001
Pvalue < α
We reject the null
Conclusion: Amount charged on credit card under the no - fee plan increases
Layla is saving money to buy a bicycle that costs $249. She has already saved $193. She saves
$7 each week. Which inequality shows the solution set for the number of weeks that Layla will
need to save money to be able to buy the bicycle?
Answer: It would take her another 8 weeks to get a total of $249.
Step-by-step explanation:
in a major study by the statistics classes at Washington High School, city parking spaces were examined for compliance with the requirement to put money in the parking meters. Overall, the students found that 76% of metered parking places had meters that had NOT expired, and 24% had meters that were expired. If the traffic officer in charge of ticketing cars with expired meters checks meters at random, what is the probability he will find an expired meter BEFORE the 3rd one
Answer:
0.4224 = 42.24% probability he will find an expired meter BEFORE the 3rd one
Step-by-step explanation:
For each car, there is a 24% probability that it had expired parking meters.
What is the probability he will find an expired meter BEFORE the 3rd one?
Three possible outcomes:
Two expired(each with 24% probability)
First expired(24% probability) and second not(76% probability)
First not(76% probability) and second expired(24% probability). So
[tex]p = 0.24^2 + 2*0.24*0.76 = 0.4224[/tex]
0.4224 = 42.24% probability he will find an expired meter BEFORE the 3rd one
[tex]18 - 4 \div {2}^{2} \times 10[/tex]
whats the answer
subtract (-4305) from |(-2508)+(-3502)|
answer:
10315
I used a calculator
step by step
(- 4305) - |(-2508) + (- 3502)|
Rewrite
Remove the parentheses
4305 - |
Calculate
4305 - |
- 2508 - 3502
- 6010
Calculate the absolute value
- 4305 - 6010
Calculate
Solution
- 10315
if f(x)=2x-1 and g(x)=3x+5, then (f*g)(x) is equal to
gud evng have a gud day
hope u enjoy ur day
(F*g)(x) means to multiply the two equations.
Multiply each term by each term:
2x-1 * 3x+5 =
2x * 3x + 2x*5 + (-1)*3x + (-1)*5 =
6x^2 + 10x -3x -5 =
6x^2+7x-5
please help i will mark brainliest!
Answer:
4,2,1
Step-by-step explanation:
Answer:
(-2 [tex]\frac{1}{2\\}[/tex], -7) would be in 3.
(0,6) would be on the y axis.
(-5,0) would be on the x axis.
Step-by-step explanation
(-2[tex]\frac{1}{2}[/tex],-7) are both negatives since quadrant 1 is positive x and y, quadrant 2 x is positive and y is negative, quadrant 3 is negative x and y, and quadrant 4 is negative x positive y.
(0,6) and (-5,0) is all about which number is x. Every x coordinant comes first.