Answer:
x = -6, 2
Step-by-step explanation:
A zero is the x-value of a point on the x-axis that the graph intersects. Knowing this, we can set the function itself to 0 to find the zeros.
1) Set the function to 0.
[tex]x^2+4x-12 = 0[/tex]
2) Factor out the polynomial. Ask yourself, what are two numbers that have a product of -12 and add up to 4? (In this case, it's 6 and -2.)
[tex]x^2+4x-12 = 0\\(x+6)(x-2) = 0[/tex]
3) Look at the answer from the last step. What do the x's have to equal in order for equation to equal 0? They have to be -6 and 2. Therefore, those are the zeros.
Factor the quadratic x^2-8x +16
Answer:
(x-4)^2
square root everything in the equation
2. The standard dose of medicine for a dog is 10 grams for every 15
pounds of body weight. What is the standard dose for a dog that weighs
120 pounds?
Answer:
8 will be your answer
Step-by-step explanation:
Does the graph represent a function? Choose the correct descriptor.
Answer:
NO
Step-by-step explanation:
Thats an absolute value function, an absolute value function can not be negative
Answer:
Not a function.
Step-by-step explanation:
Do the vertical line test. If a line can go from top to bottom and touch the line twice, then it is not a function. A line like this would touch twice on this graph, so it is not a function.
If f(x) = 0, what is x?
Answer:
0
Step-by-step explanation:
Your welcome
Fatou has $150 in her bank account. She buys a bike for $200. What is Fatou’s account balance now? Show your work.
Answer:
Fatou owes the bank $50
Step-by-step explanation:
Usually when you owe a bank, you pay more then what you owe as intrest. I hope this helps! :)
Answer:
$-50
Step-by-step explanation:
Hope this helps! :)
In the scale used on a blueprint, 34
3
4
inch represents 4 feet. On the blueprint what is the length of a room with an actual length of 20 feet?
Answer:
67
Step-by-step explanation:
123£
helpppppppppppppppp
Answer:
f(5) = -11
Step-by-step explanation:
Given that,
f(x) = 4-3x ....(1)
We need to find the value of f(5).
Put x = 5 in equation (1)
f(5) = 4-3(5)
= 4-15
= -11
So, the value of f(5) is equal to -11.
2. Sammie has 3 feet of ribbon. She is making bows for her friends that each use of 1/3 of a foot
of ribbon. How many bows can she make from her three feet of ribbon?
Answer:
Sammy can make 9 bows.
Step-by-step explanation:
3 feet of Ribbon
1/3 for each bow
1/3 + 1/3 +1/3 = 3/3 or 1 so she can make 3 bows out of one foot of ribbon
so if you repeat this than you should get 9 bows out of three feet of ribbion.
The front of Rosie's house is similar in shape to the front of Sparky's doghouse. The base of the doghouse is 6 feet and the height is 5 feet. If the height of Rosie's house is 27.5 feet, what is the length of its base? If necessary, round your answer to the nearest tenth.
1. 22.9 ft pick and awnser!! :)
2. 28.5 ft
3. 33 ft
4. 30 ft
Answer:
33feet
Step-by-step explanation:
If the base of the doghouse is 6 feet and the height is 5 feet, we can write;
6 feet base = 5 feet height
To get the length of the base if the height is 27.5feet
x feet base = 27.5 feet high
Divide both expressions
6/x = 5/27.5
5x = 6 * 27.5
5x = 165
x = 165/5
x = 33ft
Hence the length of its base will be 33feet
If eight balls can be purchased for $48, what is the unit rate? *
$48/8 balls
$1/6 balls
$6/1 ball
2 balls/$12
Answer:
-_____-....... *snort laugh*
THATS WHAT SHE SAID!!!! XD XD XD
Step-by-step explanation:
Question 1 Hannan wants to estimate the number
of eets in a lase.
She sacenes and
was Soals
She returns the 50 eels to the lake.
The next day Hannah catches 400 ells.
of these 400 eels, 10 are ringed
Work out an estimate for the total number
of eels in the lake.
Answer:
2000 eels
Step-by-step explanation:
Let us represent the total estimate of the eels = x
She returns the 50 eels to the lake.
The next day Hannah catches 400 eels, of these 400 eels, 10 are ringed.
To solve the above question, we have the following:
50/x = 10/400
Cross Multiply
10x = 50 × 400
x = 50 × 400/10
x = 2000 eels
Therefore, the total estimate of the eels in the lake = 2000 eels
After 4 new students joined a dass, the class had 32 students.
Which equation can be used to find n, the number of students in the class before the 4 new students joined?
Please help immediately!!
Answer:
hjd
Step-by-step explanation:
The population of deer forest is currently 800 individuals. Scientists predict that this population will grow at a rate of 20 percent per year.
Answer:
C. 3.8 years
Step-by-step explanation:
Exponential Growth
The natural growth of some magnitudes can be modeled by the equation:
[tex]P(t)=P_o(1+r)^t[/tex]
Where P is the actual amount of the magnitude, Po is its initial amount, r is the growth rate and t is the time.
The actual population of deer in a forest is Po=800 individuals. It's been predicted the population will grow at a rate of 20% per year (r=0.2).
We have enough information to write the exponential model:
[tex]P(t)=800(1+0.2)^t[/tex]
[tex]P(t)=800(1.2)^t[/tex]
It's required to find the number of years required for the population of deers to double, that is, P = 2*Po = 1600. We need to solve for t:
[tex]800(1.2)^t=1600[/tex]
Dividing by 800:
[tex](1.2)^t=1600/800=2[/tex]
Taking logarithms:
[tex]t\log 1.2=\log 2[/tex]
Dividing by log 1.2:
[tex]t=\frac{\log 2}{ \log 1.2}[/tex]
Calculating:
t = 3.8 years
Answer: C. 3.8 years
Answer:
3.5 years
Step-by-step explanation:
Find the LCM of the following
a) 6, 9, 15
b) 3, 12, 16
c) 8, 9, 12
d) 24, 18
e) 21, 28
f) 18, 42
Answer:
A. LCM of 6,9, and 15 is 90.
B. LCM of 3,12, and 16 is 48.
C. LCM of 8,9, and 12 is 72.
D. LCM of 24 and 18 is 72.
E. LCM of 21 and 28 is 84.
F. LCM of 19 and 42 is 798.
Step-by-step explanation:
Hope this helps! :)
Can u plz help me with this !!!
Answer:
60
Step-by-step explanation:
10 + 5 = 15. 15/2 is 7.5. 7.5 times 8 is 60. The formula for the area of the trapezoid is (a+b)/2 x h.
What is the Mean Absolute Value?
Answer:
Mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean. Mean absolute deviation is a way to describe variation in a data set. Mean absolute deviation helps us get a sense of how "spread out" the values in a data set are.
Step-by-step explanation:
7-5x+1 please help I’m supposed to find the like terms coefficients and constants pla
Answer:
coefficient is 5x and the constant is 1.
Step-by-step explanation:
simple math
Dear math why don't you grow up and solve your own problems
Answer:
LOL
Step-by-step explanation:
Answer:
Step-by-step explanation:
Yes
What is the scale factor?
Answer:a scale facter is a scale of how much is one each side or corner and the shape
Step-by-step explanation:
20 POINTS!!!
b-74 = 12
explain your thinking
Answer:
86
Step-by-step explanation:
Step 1: Collect liketerms by switching to the terms tgat are alike to the other sideb=12+74
NOTE: while switching, the signs change to the oppositeStep 2: Add 12 + 74b=12+74
b=86
Answer:
B=86
Step-by-step explanation:
So first step is add 74 to 12 because if you subtracted b with 74 and to reverse that you have to add and 74+12=86 and that is what b equals
How do you do ratios and proportion?
Answer: Ratios and Proportions - Proportions - In Depth. A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."
HOPE THIS HELPS
plz plz somebody help me i will mark you has brainlest pls its due at 8:00 its like 7:43
Answer: She is incorrect because 0 + 0 = 0
Question 1
What is another name for line k?
Answer:
FG i think... sorry if i am wrong
Step-by-step explanation:
subtract 1x²-2x-6 from -6x + 5
Use addition to solve the linear system of equations. (2x+y=5, 3x+2y=4)
Answer:
Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.
Point Form:
(6,−7)
Equation Form:
x=6,y=−7
Step-by-step explanation:
the table gives information about the lengths of time spent in hours, some children spent watching Tv last week
The data in the table is plotted by using a histogram as shown in the diagram attached below.
What is a histogram?
A histogram can be defined as a type of chart that is used to graphically represent a group of data points (statistical information) into user-specified ranges through the use of rectangles.
Generally, the area of each rectangle is directly proportional to the data frequency and its width is equal to the class interval.
Given the following data:
Length of time (t) Frequency.
0 ≤ t < 10 810 ≤ t < 15 1515 ≤ t < 20 1020 ≤ t < 30 11The vertical axis (y-axis) of the histogram would be used to represent the frequency density while the horizontal axis (y-axis) of the histogram would be used to represent the lengths of time spent (in hours) spent by the children in watching Tv last week as illustrated in the diagram below.
Read more on histogram here: https://brainly.com/question/21304143
ASAP PLZ HELP I will give brainlyleist
Answer:what is the questionStep-by-step explanation:
Find the volume of the figure below. 5 cm 11 cm 66 cm 82.5 cm 132 cm 165 cm
Answer:
A) 66cm³
Step-by-step explanation:
Using the Pythagorean Theorem, the base of the triangle is 4. The area of a triangle is 1/2 base times height. Then you multiply times 11 to get the volume.
1/2(3)(4)(11)=66
(50 POINTS HELP)The manager of a restaurant chain wants to know how many times per month diners come to his restaurant. The table shows the number of visits in one month for three samples of 10 randomly chosen diners.
Answer the questions to find the means, compare the samples, and make a prediction.
1. What are the means of Samples 1 and 2? Show your work (what number did you use).
Write your answer in the space below.
The mean of sample 1 =
The mean of sample 2 =
2. What is the mean of Sample 3? Show your work (what number did you use).
Write your answer in the space below.
The mean of sample 3 =
3. Based on the data, would you predict that, in one month, the average diner would visit the restaurant fewer than 3 times, 3 or 4 times, or, about 4 times? Explain your reasoning.
Write your answer in the space below.
Answer:
Means
sample 1: 3.6
sample 2: 3.3
sample 3: 3.8
Step-by-step explanation:
Three or four times. All of these means are no less than three but no more than four this means that the average number of times is between three or four
a) The mean of the sample 1 = 3.6
b) The mean of the sample 2 = 3.3
c) The mean of the sample 3 = 3.8
d) In one month, the average diner would visit the restaurant 3 or 4 times
What is Mean?The mean value in a set of numbers is the middle value, calculated by dividing the total of all the values by the number of values.
Mean = Sum of Values / Number of Values
Given data ,
Let the mean of the sample 1 be represented as M₁
Let the mean of the sample 2 be represented as M₂
Let the mean of the sample 3 be represented as M₃
where the number of visits to restaurant in one month is given by
Sample 1 = { 5 , 2 , 6 , 4 , 4 , 7 , 2 , 1 , 2 , 3 }
The number of visits = 10 visits
The total sum of sample 1 = 36
So , mean M₁ = 36/10 = 3.6
And , Sample 2 = { 2 , 6 , 1 , 3 , 4 , 5 , 2 , 1 , 5 , 4 }
The number of visits = 10 visits
The total sum of sample 1 = 33
So , mean M₂ = 33/10 = 3.3
And , Sample 3 = { 3 , 3 , 6 , 4 , 1 , 5 , 3 , 4 , 4 , 5 }
The number of visits = 10 visits
The total sum of sample 1 = 38
So , mean M₃ = 38/10 = 3.8
And , the average diner would visit the restaurant 3 or 4 times because the mean value of the three samples lies between 3 and 4
Hence , the mean of the sample is solved
To learn more about mean click :
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