════════ ∘◦❁◦∘ ════════
Answer : (-2,11)════════════════════
Known thaty = -2x² - 8x + 3
════════════════════
Way to do + explanation#First, find the x coordinate first by using the formula of -b/2a
x = -b/2a = -(-8)/2(-2) = 8/-4 = -2
#After getting the x, find the y
y = -2(-2)² - 8(-2) + 3
y = -2×4 +16 + 3
y = -8 + 16 + 3
y = 11
So the vertex is
(-2,11)
════════════════════
Answer:
the vertex is (-2, 11)
Step-by-step explanation:
F(x) = -2X^2 - 8X + 3 can be rewritten as -2(x^2 + 4x) + 3.
We complete the square of x^2 + 4x, obtaining x^2 + 4x + 4 - 4 = (x + 2)^2 - 4
and then we substitute this last result into F(x) = -2(x^2 + 4x) + 3:
F(x) = -2[ (x + 2)^2 - 4 ] + 3, which simplifies to:
F(x) = -2(x + 2)^2 + 8 + 3, or F(x) = -2(x + 2)^2 + 11
Comparing this to the vertex equation (x + h)^2 + k, we see that h must be -2 and k must be 11.
Thus, the vertex is (-2, 11).
What is 600 minus 258?
Answer:
342
Step-by-step explanation:
Answer:
342
Step-by-step explanation:
600 - 258 = 342
Note:
Please mark as Brainliest! <3
Please answer all
1.Let y be a random variable that has the standard normal distribution. If P(y
Select one:
a. 0.8416
b. 0.5244
c. 0.1584
d. -0.5244
2.Let y be a random variable that has the standard normal distribution. If P(-a
Select one:
a. 0.3255
b. -0.3255
c. 0.6745
d. 0.000
3.Scores on a Math test are normally distributed with a mean of 35.6 and a standard deviation of 8.7. If 15 students are randomly selected, find the probability that the mean of their test scores is at most 40.
Select one:
a. 0.4749
b. 0.5250
c. 0.0251
d. 0.9749
4. Scores on a Math test are normally distributed with a mean of 35.6 and a standard deviation of 8.7. What is the probability that a randomly selected student get at most 40 in the test?
Select one:
a. 0.6935
b. 0.3065
c. 0.6730.
d. 0.3270
5. Scores on a Math test are normally distributed with a mean of 35.6 and a standard deviation of 8.7. What is the probability that a randomly selected student get a score from 36 to 40 in the test?
Select one:
a. 0.1981
b. 0.1751
c. 0.1684
d. 0.8249
6.For a given x score, its standardized score z = (x - μ)/σ is
Select one:
a. the probability between that score and the mean
b. negative for values below the mean
c. the number of means that score is from the standard deviation
d. not changed by the addition of one more score to the data set
7.Scores on a Math test are normally distributed with a mean of 35.6 and a standard deviation of 8.7. What is the probability that a randomly selected student get at least 37 in the test?
Select one:
a. 0.4588
b. 0.5412
c. 0.4361
d. 0.5639
8.For the standard normal distribution,
Select one:
a. P(0< z <2) = 2 P(0< z <1)
b. P(0< z < 1) = 0.3413
c. P(z = 1.00) = 0.3413
d. P(-1 < z < 0) = -P( 0< z <1)
9.Let y be a random variable that has the standard normal distribution. The value of P(-1.5 < y < 0) is
Select one:
a. 0.5668
b. 0.4332
c. 0.9332
d. -0.4332
10.Let y be a random variable that has the standard normal distribution. The value of P(y<-1.5) is
Select one:
a. 0.0668
b. 0.4332
c. -0.0668
d. 0.9332
Answer:
there was many questions an this much questions we don't have time
The area of a rectangular rug is 15 feet squared. If the width of the rug is 3 feet, what is the length of the rug.
Answer:
5
Step-by-step explanation:
if the area is 15 you would divide 15 by 3 and you'll get the length of 5
Answer:
5 feet
Step-by-step explanation:
22
g(x) =
*+
+7
What is the average rate of change of g over the interval —2, 4):
Answer:
[tex]Rate = 1[/tex]
Step-by-step explanation:
Given
[tex]g(x) = x + 7[/tex]
Interval: (-2,4)
Required
Determine the average rate of change
This is calculated using:
[tex]Rate = \frac{g(b) - g(a)}{b-a}[/tex]
Where:
[tex](a,b) = (-2,4)[/tex]
So, we have:
[tex]Rate = \frac{g(4) - g(-2)}{4-(-2)}[/tex]
[tex]Rate = \frac{g(4) - g(-2)}{4+2}[/tex]
[tex]Rate = \frac{g(4) - g(-2)}{6}[/tex]
Calculate g(4) and g(-2)
[tex]g(4) = 4 + 7 = 11[/tex]
[tex]g(-2) = -2 + 7 = 5[/tex]
So:
[tex]Rate = \frac{11 - 5}{6}[/tex]
[tex]Rate = \frac{6}{6}[/tex]
[tex]Rate = 1[/tex]
Hence, the average rate of change is 1
The number of bacteria on a piece of toast triples every
hour. If there is only one bacteria cell now, how many
will there be in 24 hours?
HELP PLZZZ WILL MARK BRAINLIEST!!!
Answer:
You begin with 1 bacteria, and after 1 hour it has tripled so you now have 1 x 3=3.
Next hour, it triples again so you now have 1 x 3 x 3=9
You can see the pattern shows that the number of bacteria is multiplying every hour by a factor of 3. An exponent denotes how many times we are multiplying a number by itself, for example: 34 means we are multiplying the number 3 a total of 4 times (3 x 3 x 3 x 3).
Therefore the question is requiring us to triple the number of bacteria every hour for 24 hours, which means we are multiplying by 3 a total of 24 times. This gives us:
n x 324 where n is the number of bacteria you begin with.
Since you begin with 1 bacteria, the solution is 1 x 3 to the power 24 and u will get ur answer
What is the simplified form of i^15?
O A. -1
O B. 1
O C. -i
O D. i
Answer:
the answer is B........
plz help?
Find the value of x in this proportion.
621=10x
Answer:
x = 62.1
Step-by-step explanation:
Note the equal sign in this equation, what you do to one side, you do to the other. Isolate the variable, x, by dividing 10 from both sides of the equation:
[tex]621 = 10x\\\\\frac{621}{10} = \frac{10x}{10} \\\\x = \frac{621}{10} \\x = 62.1[/tex]
Answer:
x = 62.1
Step-by-step explanation:
The ingredients for your skillet brownie cost $2. Your want your food cost for
this item to be 30% or lower. What's the lowest price you can charge? Round
to the nearest cent.
-4x = 7y + 13
Find the slope of the line
Answer:
-4/7
Step-by-step explanation:
The first step of this problem would be changing the format of the equation so that it fits into slope-intercept form.
-4x = 7y + 13
-4x -7y = 13 (subtract 7y from both sides)
-7y = 4x + 13 (add 4x to both sides)
7y = -4x -13 (divide both sides by -1)
y = -4/7x - 13/7 (divide both sides by 7)
Now that it is in slope-intercept form, finding the slope is simple as long as you know what to look for.
Remember that y is simply a variable, just because it is at the beginning of the equation does not mean -4/7x - 13/7 is the answer. The question is asking specifically for the slope of the line. Slope in this equation is m. If y = mx + b, then m = -4/7.
The slope of the line is -4/7.
HELP ASAP PLS! The ratio of bows to headbands of Monique’s hair accessories is 8:4. Select all true statements.
A. For every 8 hair accessories, 4 are bows.
B. For every 8 bows, there are 4 headbands.
C. For every 8 headbands, there are 4 bows.
D. For every 8 hair accessories, 4 are headbands.
E. For every 12 hair accessories, 4 are headbands.
What is 9,167.364 in expanded form?
Answer:
9,000+100+60+7+.3+.06+.004
Step-by-step explanation:
120 coins what is the ratio if 2/6 is nickels and 2/6 are dimes and the rest is quarters. What is the ratio of nickels to dimes to quarters?
Hi there!
If the nickels and dimes ratioe are both 2:6, then the quarter is also 2:6.
The total of of all together is also 6:6 and 6:6 is also 120 coins.
120 divide by 3 different kinds of coins are 40.
This means that there are 40 of 1 coin out of 3 different kinds of coins. What I really mean is that each coins all have 40 each...
Therefore, the ratios of nickels to dimes and to quarters are 40:40:40...
(-1/4) divided by 2/3 times (-1/2)
Answer:
Step-by-step explanation:
3/16
Answer:
3/16
Step-by-step explanation:
-1/4*3/2*-1/2
1/8*3/2
3/16
write the ratio 75g:3kg in its simplest form
Helps pls...... help help help
Answer:
IQR = 10
Step-by-step explanation:
1. Find the median (middle data point.)
2. Find the median of the upper quartile (70 - 80.)
3. Find the median of the lower quartile. (60 - 70.)
4. Subtract the lower quartile from upper quartile.
1. median of the data = 70
2. median of Q2 = 75
3. median of the Q3 = 65
4. 75 - 65 = 10
IQR = 10
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Answer lit
Step-by-step explanation:
if the diameter of a circle is 65 what is the area
Answer:
(4225/4)pi units^2
Step-by-step explanation:
So we need to know the area of a circle formula to find the answer to this question
the formula is A = r^2(pi)
So we have the diameter but we need the radius. The radius is half the diameter so r = 65/2
Now we can plug the radius into the area formula
(65/2)^2*pi =
(4225/4)pi units^2
Answer:
3318.31
Step-by-step explanation:
What is tan K? i need help ..
[tex] \huge \purple{\tt{Answer:}} [/tex]
[tex]\sf {tan~K} = \sf{{\dfrac{opposite~side}{adjacent~side}}} =\sf{{\dfrac{24}{51}}} [/tex]
None of the answers are correct
Two trains, Train A and Train B, weigh a total of 389 tons. Train A is heavier than Train B. The difference of their weights is 263 tons. What is the weight of each train? Equation 1: ____________ Equation 2: ___________ Train A weight: ________ Train B weight: ________
9514 1404 393
Answer:
A + B = 389A - B = 263A = 326 tonsB = 63 tonsStep-by-step explanation:
The first equation is an expression of the first given relationship:
A + B = 389 . . . . . . where A and B represents trains weights, respectively
The second equation is an expression of the relationship described in the next two sentences:
A - B = 263
__
These equations can be solved by adding them together:
(A +B) +(A -B) = 389 +263
2A = 652 . . . . . . simplify
A = 326 . . . . . . . .divide by 2*
B = 326 -263 = 63
Train A weighs 326 tons.
Train B weighs 63 tons.
_____
* You may notice that this value is the average of the given sum and difference. That observation is true of all "sum and difference" problems.
Please assist me with this problem
Answer:
See working below
Step-by-step explanation:
You can apply Thales Intercept Theorem ("similar triangles")
a. [tex]\frac{36}{24}\:=\:\frac{48}{ET},\:ET\:=\:\frac{24\cdot 48}{36}\:=\:32[/tex]
b. [tex]\frac{36+24\:}{AJ}=\:\frac{48+ET}{40},\:\frac{60\:}{AJ}=\:\frac{48\:+\:32}{40},\:\frac{60}{AJ\:}=\:\frac{80}{40},\:AJ\:=\:\frac{1}{2}\left(60\right)\:=\:30[/tex]
c.
[tex]\\\frac{48}{CT}\:=\:\frac{36}{36+24}\:=\:\frac{27}{AT},\\\\CT = CE + ET = 48 + 32 = 80\\\\\frac{48}{80}\:=\:\frac{36}{60}\:=\:\frac{27}{AT},\:0.6\:=\:\frac{27}{AT},\:AT\:=\:\frac{27}{0.6}\:=\:45[/tex]
d.
[tex]\frac{36+24+AJ}{12\:}=\:\frac{48+ET+40}{OS}\\\\\frac{36+24+30}{12}=\:\frac{48+32+40}{OS},\:\frac{90}{12}\:=\:\frac{120}{OS},\:OS\:=\:\frac{12\cdot 120\:}{90}=\:16[/tex]
e.
[tex]\frac{36+24}{36+24+AJ\:}=\:\frac{48+ET}{48+ET+40\:}=\:\frac{AT}{JO}\\\\\frac{60\:}{36+24+30}=\frac{\:48+32}{48+32+40}\:=\:\frac{45}{JO}\\\\\frac{60}{90}=\:\frac{80}{120}\:=\:\frac{45}{JO}\\\\JO\:=\:\frac{135}{2}\:=\:67.5[/tex]
f.
[tex]\frac{36+24+AJ\:}{36+24+AJ+12}=\frac{\:48+ET+40}{48+ET+40+OS}\:=\:\frac{JO}{NS}\\\\\frac{90}{102}\:=\:\frac{120}{136}\:=\:\frac{67.5}{NS}\\\\NS\:=\:\frac{136\cdot 67.5}{120}=\:76.5[/tex]
Any one know the answer for these two it’s OK if you can only do one
Answer:
3) 10
4) 12
Step-by-step explanation:
It’s the Pythagorean Theorem.
3) 6²+8²=c²
36+64=c²
100=c²
√100=c
c=10
4) 7.2²+9.6²=c²
51.84+92.16=c²
144=c²
√144=c
c=12
Answer:
c = 10km
Step-by-step explanation:
This is for #3.
Pythagoream Theoreom formula: a^2 + b^2 = c^2
Plug in the numbers into the formula and simplify.
8^2 + 6^2 = c^2
64 + 36 = c^2
100 = c^2
√100 = 10
c = 10km
Hope this helps!:)
Use the sequence {0.3, 0.03, 0.003, 0.003, ... } to answer the question.
What is the explicit rule that describes the sequence?
1 an = 0.3(0.01)(n-1)
2 an = 0.3(0.001)(n-1)
3 an = 0.3(10)(n-1)
4 an = 0.3(0.1)(n-1)
Answer:
2 an ? Im pretty sure hope it helped
Answer:
an = 0.3(0.1)^(n - 1)
Step-by-step explanation:
so it's number 4 ;)
1. What concept does this picture illustrate?
A. radiation
B. conduction
c . contraction
D. convec
Answer:
c
Step-by-step explanation:
Answer:
Convection.
Step-by-step explanation:
Convection is where warm air rises and cool air falls. This picture is an example of Convection.
Help please ASAP....
PLSS HELP DUE TMR PLSS 25 POINTS I BEGG
Answer:
7tifi6diyd8ydiy
Step-by-step explanation:
ust75dutsjtsutxxhtshfxhrsfhzyrahrsursusutsutsuttus5usutsutxtu
Need help ASAP
questions in the pics i have sent
Answer:
Step-by-step explanation:
Picture 1
In right triangle ABC,
Side AB is the opposite side of angle C.
Picture 2
In triangle MKL,
tan(∠M) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
= [tex]\frac{KL}{KM}[/tex]
= [tex]\frac{15}{8}[/tex]
Option (1) is the answer.
Picture 3
In ΔXYZ,
sin(∠Z) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]
= [tex]\frac{XY}{XZ}[/tex]
For the length of XY we will apply Pythagoras theorem in ΔXYZ,
XZ² = XY² + YZ²
XY² = XZ² - YZ²
= (40)² - (32)²
XY = √576
= 24
sin(Z) = [tex]\frac{24}{40}[/tex]
sin(Z) = [tex]\frac{3}{5}[/tex]
Picture 4
In right triangle DEF,
Cos(D) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]
= [tex]\frac{EF}{DF}[/tex]
= [tex]\frac{75}{72}[/tex]
= [tex]\frac{25}{24}[/tex]
Picture 5
In ΔABC,
tan(63°) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
tan(63°) = [tex]\frac{BC}{AB}[/tex]
AB = [tex]\frac{BC}{\text{tan}(63)}[/tex]
AB = [tex]\frac{8}{\text{tan}(63)}[/tex]
AB = 4.0762 ≈ 4 m
Option (3) will be the answer.
The radius of a circle is 20 cm. Find its circumference in terms of Pi
Based on the calculations, the circumference of this circle in terms of Pi is equal to [tex]40\pi\;cm[/tex].
How to calculate the circumference of a circle.Mathematically, the circumference of a circle is given by the formula:
[tex]Circumference = 2\pi r[/tex]
Where:
r is the radius of a circle.Given the following data:
Radius of a circle = 75 in.
[tex]\pi = 3.14[/tex]
Substituting the given parameters into the formula, we have;
[tex]Circumference = 2\pi \times 20\\\\Circumference = 40\pi\;cm[/tex]
Read more on circumference here: brainly.com/question/14478195
the graph of which function will contain the point(2,10)
Answer:
point (2 , 10)
Y= 5X
10 = 5(2)
10= 10
Sean runs 2/3 of a mile in 10 minutes. at this rate, how many miles can Sean run in 30 minutes? Explain how you found this answer. Please I need it quick!
Answer:
2 miles.
Step-by-step explanation:
In this case, we would multiply the numerator by 3 since we know that it takes him 10 minutes to run 2/3 of a mile. So, 2x3 = 6. Which gives us 6/3. Simplified that would be 2 miles. Hope this helps!
List three factors that must be considered when designing and building a house? Describe how each factor can influence the design and the building of the house.
I will be giving brainiest to correct and best explained answer! :)
Step-by-step explanation:
I would say the area its getting built. imagine wanting to build a house but you can't dig the sewer (if thats the spelling) pipes bc the area you want doesn't have any water or something like that. definitely money. without it, you can't do anything, you can't buy materials or even hire people to help you because you cannot tell me that you can build a house on your own. Another I would say is Labor cause like I said, if you ain't got nobody to help you, you're probably going to take a few years or more. so if you want to build a house in an area where there is a few architects and designers, you're just going to have to suck it up and get what you get.