Answer:
Median = 15
Mean = 22
Step-by-step explanation:
Median = first lets arrange the data type from smallest to biggest and select the middle number as it will be our median
1, 11, 14, 15, 31, 35, 47
the middle number is 15
so 15 will be our median
Mean = [tex]\frac{sum of all numbers }{total numbers\\}[/tex] sum of all numbers divided by the number of values in the set
[tex]\frac{1 + 11 + 14 + 15 + 31 + 35 + 47}{7}[/tex]
= [tex]\frac{154}{7}[/tex]
= 22
so our mean will be 22
Kevin and Amy are working on an experiment in the
science lab. They start with 2.6 grams of oil and add water
to get exactly 4.32 grams of solution. To find the amount
of water added, they subtract the weight of the oil from the
weight of the solution. Kevin calculates the difference to
be 4.06 grams; Amy calculates it to be 1.72 grams.
Answer:
Amy is right
Step-by-step explanation:
4.32-2.6 = 1.72
Answer:
Amy is correct
Step-by-step explanation:
4.32-2.6 = 1.72
Which numbers are integers? Check all that apply.
04
-15
-10
2.5
0-4
0.13
ILL GIVE BRAINLIEST
What is the equation of the line that passes through (4, -1) and (-2, 3)?
2 x + 3 y - 5 = 0
-2 x + 3 y - 5 = 0
2 x - 3 y - 5 = 0
Answer:
2x + 3y - 5 = 0
Step-by-step explanation:
(4 , -1) & (-2,3)
[tex]Slope =\frac{y_{2}-y_{1}}{x_{2}-x_1}}\\\\=\frac{3-[-1]}{-2-4}\\\\=\frac{3+1}{-6}\\\\=\frac{4}{-6}\\\\=\frac{-2}{3}[/tex]
m = -2/3; (4 , -1)
y - y1 = m(x - x1)
[tex]y - [-1]= \frac{-2}{3}(x-4)\\\\y + 1 =\frac{-2}{3}x -4*\frac{-2}{3}\\\\y + 1 =\frac{-2}{3}x+\frac{8}{3}[/tex]
Multiply the equation by 3
3y + 3 = -2x + 8
3y = -2x + 8 - 3
3y = -2x + 5
2x + 3y - 5 = 0
Please help me with question a), b) and c). I have been trying for so long. (Show working), thank you.
Answer:
b)48 km/hr (12 km in .25 hrs)
c) avg speed: 60/3 = 20 km/hr
Step-by-step explanation:
a)
.5 18
.75 18
1 30
1.5 30
2 40
2.25 40
3 60
A company claims that its tablet computers have an average recharge time of 3 hours. In a random sample of these computers, the average recharge time is 2.5 hours. You suspect that the average recharge time might be less than what the company claims. Let µ represent the average time, in hours, needed to recharge the company's tablet computers.
What is the alternative hypothesis for this situation?
DONE | Second option
The alternative hypothesis in this situation is An hypothesis is u < 3.
What is the alternative hyothesis?An hypothesis is a temporary explanation to a phenomena. The explanation is either disproved by carrying out tests. Alternative hypothesis states that there is a relationship between the population parameters.
To learn more about the alternative hypothesis, please check: brainly.com/question/4454077
#SPJ2
Answer:
U=3
Step-by-step explanation:
next - U<3
next - alternative
sugmah
HELP QUICK PLEASE!
Which additional information would suffice to prove AJKM AKIL by Side-Angle-Side?
O MK LJ
O MJ | LK
O ZJMKZKLJ
O ZJKM ZKIL
Answer: MK is congruent to LJ
Step-by-step explanation: If the legs of the triangle are equal then that must mean the hypotenuses are as well.
What number should be added to both sides of the equation to complete the square?
X^2+126= 11
Answer:
126/2 = 63^2
Step-by-step explanation:
state the dimensions of the matrix. identify the indicated element
Answer:
A
Step-by-step explanation:
In a matrix we go by row, then column so 2 rows and 3 columns
Given the circle with equation x+ y =17
a). Determine if the points D(-4, -1) and E(1, 4) are on the circle. Show all work
b). Find the equation of the perpendicular bisector of the chord DE
c). Verify that the perpendicular bisector from part b) passes through the center of the circle
Answer:
Step-by-step explanation:
x+y=17 is NOT the equation for any circle. You have omitted the exponents. The equation for the circle should be
x^2 + y^2 = 17.
:::::
Plug the coordinates of D into the equation.
(-4)² + (-1)² = 17, so D is on the circle.
Plug the coordinates of E into the equation.
1² + 4² = 17, so E is on the circle.
:::::
Slope of DE = (-1 - 4)/(-4 - 1) = 1
Slope of perpendicular to DE is -1.
Midpoint of DE: ((-4+1)/2, (-1+4)/2) = (-1.5, 1.5)
Point-slope equation for perpendicular bisector:
y-1.5 = -(x+1.5)
y = -x
:::::
Center of circle is (0,0)
0 = -0, so y=-x passes through the center.
which ordered pair is the best estimate for the solution to the system?
Answer:
(-2, 5)
Step-by-step explanation:
Plug each ordered pair in both equations and see if they fit in BOTH equations.
When dragons on planet Pern lay eggs, the eggs are either green or yellow. The biologists have observed over the years that 21% of the eggs are yellow, and the rest green. Next spring the lead scientist has permission to randomly select 58 of the dragon eggs to incubate. Consider all the possible samples of 58 dragon eggs.
What is the usual number of yellow eggs in samples of 58 eggs? (Give answers as SENSIBLE whole numbers.)
minimum usual number of yellow eggs =
maximum usual number of yellow eggs
Answer:
usual number of yellow eggs = 12
Usual maximum = 21
Usual minimum = 3
Step-by-step explanation:
To solve this, we will use the expected value of a binomial probability.
The formula is;
E(X) = np
Where;
n is sample size
p is probability of success.
We are given;
n = 58
p = 21%
Thus;
usual number of yellow eggs in samples = np = 58 × 21% = 12.18 ≈ 12
From USL(Upper specification limit) and LSL(Lower specification limit) formula, we can find the maximum usual number and minimum usual number of eggs respectively.
Thus;
USL = n(p + 3√(p(1 - p)/n)
USL = 58(0.21 + 3√(0.21(1 - 0.21)/58)
USL = 21.48 ≈ 21
LSL = n(p - 3√(p(1 - p)/n)
LSL = 58(0.21 - 3√(0.21(1 - 0.21)/58)
LSL = 2.87 ≈ 3
Solve The Inequality
Answer:
B
Step-by-step explanation:
I just solved it now
you are welcome
Answer:
x∈[13,+∞]
Step-by-step explanation:
x≥13
please help solve this (geometry)
Answer:
∠ 3 = 140°
Step-by-step explanation:
∠ 4 and ∠ 3 are same- side exterior angles and sum to 180° , then
∠ 3 = 180° - ∠ 4 = 180° - 40° = 140°
Help me plz I need help
Answer:
x = 14°
Step-by-step explanation:
x + 76° = 90°
or, x = 90° - 76°
so, x = 14°
A is 2 times older than B. Identify the appropriate expression.
Answer:
C. 2x
Step-by-step explanation:
Let
B's age = x years
A's age = 2 times older than B
= 2 * x
= 2x years
A's age = 2x years
For instance, if B's age is 17 years
Then,
A's age = 2x
= 2(17)
= 34 years old
Simplify the expression to lowest terms.
4x2-9/2 x2 + 11 x +12
the volume of metal in a scale model of a metal high tension tower is 54 cm cubed. The scale used was 1:50. it required 50 mm of paint to give the model one coat. what volume of metal would be required to build the high tension Tower
Answer:
6,750,000 cm³ = 6.75 m³
Step-by-step explanation:
a scale version means that the ratio of every dimension of scale vs. real object is 1/50.
volume is created by multiplying 3 dimensions.
so, going from scaling to real the volume has to be multiplied by 50×50×50 = 50³ = 125000
so, as for the scale model we needed 54 cm³, for the full size object we need 54×125000 = 6,750,000 cm³ of metal.
or to bring it to m³ (1m³ = 100×100×100 cm = 1000000 cm³)
that would be 6.75 m³ of metal.
solution region of inequalities x≥ 0 and y≤0 lies in which quadrant?
9514 1404 393
Answer:
IV
Step-by-step explanation:
x > 0 in quadrants I and IV.
y > 0 in quadrants I and II.
The quadrant in which x > 0 and y < 0 is quadrant IV.
_____
The axes, x=0 or y=0, are in no particular quadrant. They are the boundaries between quadrants.
How bad is my friend’s handwriting
Rate from 1-10
Answer:
6
Step-by-step explanation:
Not bad, i can read it. Mines worse xd
the line I is a tangent to the circle x^2+y^2=50 at the point A. A is the point (1,7). the line crosses the x axis at the point p. work out the area of triangle oap 
Answer:
what do you need help with
Step-by-step explanation:
HURRYYY please pleaseee
Please help me with this
Answer:
A
Step-by-step explanation:
first answer gets marked brainliest!!!
Answer:
in neighbourhood q the total number of people in the nine families I higher than that in neighbourhood s because of we add up the number of people in the families in neighbourhood q we get a total of 35 yet we have a total of only 27 people in the nine families in neighbourhood s
hope that helps ❤
Please hurry I will mark you brainliest
The lines in which pair are parallel?
Answer:
C.
Step-by-step explanation:
Neither equation has a different slope, so they are parallel.
Find the value of the polynomial:
Answer:
107
Step-by-step explanation:
5x⁶-3x²+7-2x⁶-3x⁶+4x²
= x²+7 (terms with x⁶ cancels out)
= (-10)²+7
= 100+7
= 107
18. The graph of f(x) = ax2 opens
upward and is narrower than the
graph of g(x) = x2. Which of the
following could be the value of a?
Angle 1 and Angle 2 form a linear pair. If the measure of angle is 113°, find the measure of angle 2.
Answer:
<2 =67
Step-by-step explanation:
A linear pair adds to 180 degrees
<1 + <2 =180
113+ <2 = 180
<2 = 180-113
<2 =67
Travis makes and sells fishing lures. He
has 56 fishing lures that he is putting into
boxes. Each box can hold 5 fishing lures.
How many boxes can Travis fill
completely?
Who knows how to do this Bc I don’t understand
Answer:
WV should be equal to XY
Step-by-step explanation:
since it is the HL postulate meaning hypotenuse and leg, we need to show that the hypotenuses of both triangles are equal since we are already given that one of their legs are congruent. we are also given that they are right triangles.
Shawn and mark want to save $225.00 together . Shawn has $16.00 and saves $10.00 each week . Mark has $22.00 and saves $7.00 each week . Which equation can be used to find the number of weeks it will take them ?
A. 26x + 29x = 225
B. 38x + 17 = 225
C. 55x = 225
D. 38 + 17x = 225
Answer:
D. 38 + 17x = 225Step-by-step explanation:
Shawn will have:
16 + 10xMark will have:
22 + 7xTogether their target is 225:
16 + 10x + 22 + 7x = 22538 + 17x = 225Correct choice is D
Now they will have eq.,
→ Shawn = 16 + 10x
→ Mark = 22 + 7x
They togetherly get their target,
→ 16+ 10x + 22 + 7x = 225
→ 38 +17x = 225
Hence, option (D) is the answer.
