Unit 3 Mid - Assessment
The time in the coordinate grid passes through the points( 4, -3)and (6,-1). What is the value of B if written in a slope-intercept form of y=Mx+b
What’s the ordered pair for each coordinate.
A
B
C
What are the known solutions to f(x)=g(x) ?
Select each correct answer.
A.1
B.3
C.5
D.7
E.11
Answer:
C IF NOT D
Step-by-step explanation:
An electronic games manufacturer producing a new product estimates the annual sales to be 8000 units. Each year 2% of the units that have been sold will become inoperative. So, 8000 units will be in use after 1 year, [8000 0.98(8000)] units will be in use after 2 years, and so on. How many units will be in use after n years
Part 1 : Adding & Subtracting Monomials
Answer:
1. 15a⁵b²+4a⁵b²
= 19a⁵b²
2. -7m-m²+4m²-3m
= -7m -3m -m²+4m²
= -10m +4m²
3. 2pq⁷ and -pq⁷
= (2pq⁷) +(-pq⁷)
= 2pq⁷-pq⁷
= pq⁷
4. -13xy from -5xy
= -5xy - 13xy
= - 18xy
it's your answer . check it out
The value, in dollars, of an antique has increased exponentially over x years as shown in the graph. Estimate the y-intercept of the function. What does the intercept represent in context? A. 1,000; the percent increase in value of the antique per year B. 1,000; the value of the antique at 0 years of age C. 1,000; the value of the antique at 1 year of age D. 1,000; the amount the value of the antique increases per year
Answer:
The answer is C.
Step-by-step explanation:
I just did the test and the answer was C
The intercept is 1,000; the value of the antique at 1 year of age.
What is slope?A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the
change in y coordinate with respect to the change in x coordinate as,
m = Δy/Δx
where, m is the slope
Given:
Let us take two points from the graph (0, 1000) and (35, 4000)
Now, slope= ( 4000- 1000)/(35- 0)
= 3000/35
= 600/7
Now, slope- intercept form
y- 1000= 600/7 ( x- 0)
y- 1000 = 600/7 x
y= 600/7x + 1000
Hence, the intercept is 1,000; the value of the antique at 1 year of age.
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Helpppppppppppppppp
Plz help me I need help with math plz anyone who good at math
Answer
6 is the correct answer.
Step-by-step explanation:
You need to know sin(60) = root(3)/2 = a/(4root(3)), then you can solve for 'a', get a = 6.
Layla walks at a rate of 3 miles per hour. At this rate,how far he walk in 4 hours
Rebecca buys some socks that cost $5 per pair and 2 t-shirts that cost $12 each. The cost of Rebecca’s total purchase is $39.
Answer:
3 pairs of socks
Step-by-step explanation:
2 shirts *12per shirt = $24 spent so far
$39 - $24 dollars spent so far = $15 dollars left
$15 dollars left/$5 per pair of socks = 3 pairs of socks.
An equation is formed of two equal expressions. The total number of socks that Rebecca bought is 3.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Let the number of pairs of socks that Rebecca bought be represented by x.
Given that Rebecca buys some socks that cost $5 per pair and 2 t-shirts that cost $12 each. Also, the total purchase value is $39. Therefore, we can write the equation as,
Purchase value of socks + Purchase value of t-shirts = Total purchase value
($5 × x) + ($12 × 2) = $39
5x + 24 = 39
5x = 39 - 24
5x = 15
x = 15/5
x = 3
Hence, the total number of socks that Rebecca bought is 3.
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I don't understand this, please help
sameeee.
nice brooooo.
Answer:
Octagon:
Sum = 1080
One interior angle = 135
14-gon:
Sum = 2160
One interior angle = 154.286
20-gon:
Sum = 3240
One interior angle = 162
Step-by-step explanation:
Sum of angles in a polygon -> sum of angles = (n – 2)180°
one interior angle = sum of angles/n
n = number of sides
one interior angle = sum of angles/n
Octagon:
Sum = 1080
One interior angle = 135
14-gon:
Sum = 2160
One interior angle = 154.286
20-gon:
Sum = 3240
One interior angle = 162
Vera had 96 marbles.During a game,he lost 36.What is percentage of his marbles je had remaining????
Answer:
62.5%
Step-by-step explanation:
96 - 36 = 60
60/96
simplified = 62.5% remaining
Factor out the GCF of the three terms, then complete the factorization of x^4+9x^3+14x^2
Answer:
2
Step-by-step explanation:
find the greatest common factor, and then it is x^2(x+2) (x+7)
Please helpI suck your money
Answer is in the file below
tinyurl.com/wpazsebu
I bought 3 bags of red bows.
After I used 3 bows on gifts that I wrapped,
Thad 24 bows left.
How many bows were in each bag?
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For now, take a crack at the toughest math problems known to man, woman, and machine.
The Collatz Conjecture. Dave Linkletter. ...
Goldbach's Conjecture ...
The Twin Prime Conjecture. ...
The Riemann Hypothesis. ...
The Birch and Swinnerton-Dyer Conjecture. ...
The Kissing Number Problem. ...
The Unknotting Problem. ...
The Large Cardinal Project.
Answer:
1
Step-by-step explanation:
In exercise 14 and 15, write a piecewise function for the graph
Answer14. 6/0 15. 1/5 OR 5/1
Step-by-step explanation:
I need help with this
Answer:
27 1/2
Step-by-step explanation:
Solve for b:19-b=31
Answer:
-12
Step-by-step explanation:
Felicity needs to buy 3 dozen cookies for a party. The first 16 cookies cost $0.28 each. The rest cost $0.19.
What is Felicity's total cost?
Answer: $8.28
Step-by-step explanation: 3 dozens are 36 cookies. The first 16, $0.28 each will be $4.48. The rest will cost $0.19 each so $0.19 x 20 = $3.80
$4.48 + $3.80 =
Answer:$8.28
Step-by-step explanation
Multiply 16x0.28 you will get $4.48 then
you Multiply 20x0.19 you get 3.8 also known as 3.80 you add
3.80+4.48+$8.28
14 + 6z - 10 + 9z equaled to?!
Answer:
4 + 15z
Step-by-step explanation:
Is your simplified expression.
Answer:
15z + 4
Step-by-step explanation:
6z + 9z = 15z14 - 10 = 4Put them together: 15z + 4I hope this helps!
A figure is graphed in the coordinate plane. Which pair of transformations will NOT preserve the size and the shape of the figure?
A. Reflect the figure over the line y = x and then translate it 2 units up
B. Translate the figure 3 units to the left and then dilate by a scale factor of 4
C. Rotate 90 degrees counterclockwise and then dilate by a scale factor of 1
To state the figure 180 degrees counter-clockwise about the origin and then reflect it over the y-axis
The transformations which is NOT preserve the size and the shape of the figure is dilate by a scale factor of 4 (B) and dilate by a scale factor of 1 (C).
What is the dilation of the figure?Dilation of a figure, means the transformation of the figure. The factor by which the given figure dilated, called the scale factor of dilation.
When a figure is dilated, the size of the original figure is changed.
A figure is graphed in the coordinate plane. Let's check all the option for the transformation of original figure.
A. Reflect the figure over the line y = x and then translate it 2 units up- Reflection and translation of a figure does not changes its shape and size.B. Translate the figure 3 units to the left and then dilate by a scale factor of 4- With the scale factor of dilation, the size of the figure will be changed for this case.C. Rotate 90 degrees counterclockwise and then dilate by a scale factor of 1- In this case, there the figure is dilated with a scale factor of 1. This will change the size of the original figure.D. To state the figure 180 degrees counterclockwise about the origin and then reflect it over the y-axis- In this case the shape and size does not change.Hence, the transformations which is NOT preserve the size and the shape of the figure is dilate by a scale factor of 4 (B) and dilate by a scale factor of 1 (C).
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Please help!!!!!!! *will mark Brainiest*
Answer:
-9/14
Step-by-step explanation:
I just used a calculator
An archer has $62 to spend on a new archery
set. A certain set containing a bow and three arrows costs $42. With the purchase of this set, he can purchase additional arrows for $4 per arrow. Use an inequality to find the maximum number of arrows he could obtain, including those with the set, for his $62.
Answer:
5 more arrows
Step-by-step explanation:
62 - 42 = 20 20 / 4 = 5
The archer can buy 5 more arrows.
Hope this helps! If it did, please give brainliest! It would help a lot! Thanks! :D
a) The mean age of graduate students at a University is at most 31 y ears with a standard deviation of two years. A random sample of 15 graduate students is taken. The sample mean is 32 years and the sample standard deviation is three years. Are the data significant at the 1% level? The p-value is 0.0264. State the null and alternative hypotheses and interpret the p-value. Write information given with correct symbols. Hypothesis interpret the p-value. b) A bottle of water is labeled as containing 16 fluid ounces of water. You believe it is less than that. What type of test would you use? c) Assume the null hypothesis states that the mean is at most 12. Is this a left-tailed, right-tailed, or two-tailed test? d) What should you do if α = p-value?
Answer:
A.)
H0: μ ≤ 31
H1: μ > 31
B.)
H0: μ ≥ 16
H1: μ < 16
C.)
Right tailed test
D.)
If Pvalue is less than or equal to α ; we reject the Null
Step-by-step explanation:
The significance level , α = 0.01
The Pvalue = 0.0264
The decision region :
Reject the null if :
Pvalue < α
0.0264 > 0.01
Since Pvalue is greater than α ; then, we fail to reject the Null ;
Then there is no significant evidence that the mean graduate age is more Than 31.
B.)
H0: μ ≥ 16
H1: μ < 16
Null Fluid contains 16
Alternative hypothesis, fluid contains less than 16
One sample t - test
C.)
Null hypothesis :
H0 : μ ≤ 12
. The direction of the sign in the alternative hypothesis signifies the type of test or tht opposite direction of the sign in the null hypothesis.
Hence, this is a right tailed test ; Alternative hypothesis, H1 : μ > 12
d.)
If Pvalue is less than or equal to α ; we reject the Null.
A scientist cuts a box parallel to its bases, and the resulting two-dimensional cross section is a square. Which original figure could result in the square after being cut?
octagonal pyramid
octagonal pyramid
square prism
square prism
triangular prism
triangular prism
triangular pyramid
triangular pyramid
Answer:
octagonal pyraimed and squre prims
Consider the system of equations shown.
Two angles are supplementary. If one angle is 45° less than twice of the other angle, find the two angles.
Answer:
we will call the two angles a and b
a = 105
b = 75
Step-by-step explanation:
Supplementary means the two angles add up to 180 degrees. Now this turns into a system of equations problem. let's call the two angles a and b.
Lets say angle a is 45 degrees less than twice the other angle. that means a = 2b - 45. The first part told us a + b = 180
a + b = 180
a = 2b - 45
Now this is actually super easy to do. Normally you would have to do algebra to one of the two equations so there is one variable by itself. the second equation already has that.
now look at the other equation. instead of a though make a = 2b - 45
a + b = 180
2b - 45 + b = 180
Now use algebra to solve for b
2b - 45 + b = 180
b = 75
Now, go back to the first two equations. put 75 in for b for either one of them and you will get the answer to a.
a + 75 = 180
a = 105
or
a = 2*75 - 45
a = 105
Now we can check. a=105 and b = 75
do both add up to 180? yep. is a 45 less than twice b? or using numbers, is 105 45 less than twice 75? well twice 75 is 150. and 105 is 45 less than that, so yep!
Let me know if there was anything you didn't get. Also you could totally have started with the other equation first and got a = 180 - b or b = 180 - a and gotten the same answer.
Factor completely and then place the factors in the proper location on the grid. 4 a2 - 8 a - 5
Step-by-step explanation:
(2a + 1)(2a - 5)
-1/2 and 5/2 are factors
point on graph are (-1/2,0) (5/2,0)
Mrs. Montgomery earns a 6.5% commission on her total sales. Last month, she had sales of $55,780,
How much commission did Mrs. Montgomery earn last month?
What was her total pay for the month?
Round your answers to two decimal places.
try using the steps in my question i have one just like you
Step-by-step explanation: