Connor drives at 50 km/h during 3 hours.
Laura drives the same distance as Connor, but during 2 hours.
Work out Laura's average speed.
Step-by-step explanation:
lets find distance
s=vt=150 Km
now lets find lauras average speed:
V=S/t=150/2=75 km/h
Answer:
SUBTRACT
Step-by-step explanation:
Which numbers are irrational ?
Answer:
1.true 2.False 3. true 4. False 5. true 6. false
Step-by-step explanation:
Irrational number are with the square root sign
Use the order of operations to simplify 4 3/5 + 15 divided by 5-1/5
O A. 8
O B. 7 2/5
O C. 19 2/5
O D. 24 4/5
Answer:
B
sorry if it wrong answer
someone pls help me asap
Answer:
i think its c :)))
A total of 2 feet of snow falls over three days. On the first day, 1/6 of the total snow falls. On the second day, 7/12 of the total snow falls.
On third day 1/2 of the total snow falls.
What is the fraction?In Mathematics, fractions are represented as a numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.
Given that, total of 2 feet of snow falls over three days.
On the first day, 1/6 of the total snow falls. On the second day, 7/12 of the total snow falls.
So, the snow fall on third day will be
= 2(1-1/6-7/12)
= 2((12-2-7)/12)
= 2(3/12)
= 2(1/4)
= 1/2
Therefore, on third day 1/2 of the total snow falls.
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"Your question is incomplete, probably the complete question/missing part is:"
A total of 2 feet of snow falls over three days. On the first day, 1/6 of the total snow falls. On the second day, 7/12 of the total snow falls. Find the fraction of snow fall on third day.
Assume the population has a normal distribution. A sample of 25 randomly selected students Has a mean test score of 81.5 With a standard deviation of 10.2. Construct a 90% confidence interval for the mean test score.
Answer:
The 90% confidence interval for the mean test score is between 77.29 and 85.71.
Step-by-step explanation:
We have the standard deviation for the sample, so we use the t-distribution to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 25 - 1 = 24
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 24 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.9}{2} = 0.95[/tex]. So we have T = 2.064
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.064\frac{10.2}{\sqrt{25}} = 4.21[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 81.5 - 4.21 = 77.29
The upper end of the interval is the sample mean added to M. So it is 81.5 + 4.21 = 85.71.
The 90% confidence interval for the mean test score is between 77.29 and 85.71.
Choose the correct domain and range for the graph
Ty
Answer:
D
Step-by-step explanation:
do you want an explanation?
btw, plz brainliest :)
Compare the functions. f(x)=10x g(x)=5^x h(x)=4x^2+5x select the true statement
Answer:
equals 56
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
what is the measure of angle gxi
Answer:
well we need more of the problem to solve this question gxi has unlimited possibilities because u didnt define it
Step-by-step explanation:
j 4 + 14 = 18 j = what
Answer:
j = 1
Step-by-step explanation:
4j + 14 = 18j
subtract 4j from both sides
14 = 14j
divide 14 from both side
j = 1
If f(x) = 3x 2 - x, find f(-2).
A: 10
B: 14
C: 38
Answer:
A
Step-by-step explanation:
3 times -2 is -6
-6 times 2 is -12
-12- (-2) is 10
K.
What is the length of line segment KJ?
O 23 units
6
O 3/2 units
M 3 J
033 units
O 3V5 units
Answer:
the length of line segment KJ is 3√5 units.
The length of the line segment KJ is 3√5 units.
What is Right Angle?Right angles are the angles formed by two rays which is equal to 90 degrees.
Given a triangle KLJ.
A perpendicular line is drawn from the vertex K to it's opposite side LJ at a point M, which in turn forms a right angled triangle KMJ.
For right angled triangle, we have a theorem named Pythagoras Theorem which states that,
Hypotenuse² = Base² + Altitude²
Here base is the line segment MJ and altitude is KM and the hypotenuse is the line segment KJ
Length of base = 3 units
Length of altitude = 6 units
By Pythagoras theorem,
Hypotenuse² = Base² + Altitude²
= 3² + 6²
= 9 + 36
= 45
Hypotenuse = [tex]\sqrt{45}[/tex]
= √(9 × 5)
= √9 × √5
= 3√5
Hence the length of the line segment KJ is 3√5 units.
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Chris has 19 of a book left to read. If he reads an equal amount of the book over 3 days, how much of the book will Chris read EACH day?
A
27 pages
B
3 pages
C
13 of the book
D
127 of the book
Answer: If it was 19 PAGES then the answer would be 6 1/3 or 6.33333...
Which expression can be used to find the total cost of 4 bags of apples at $3.30 per bag and 6 candy bars at $1.25 each? pls i need it right now!!
Answer:
3.30/4 and 1.25/6 Please mark brainliest if satisfied
Step-by-step explanation:
3.30/4 and 1.25/6
Answer:3.30/4 and 1.25/6
Step-by-step explanation:
What does f(0) = 5 mean?
The input of 0 using the function f gives the output value of 5.
x + 9 = 37 what is x?
Answer:
x=28
Step-by-step explanation:
x+9−9=37−9
x=28
Answer:
x=28
so, X=28
....
....
...
....
anyone know the x and y relationship?
Answer:
sfgsdfgg shdfhjksdfj
Step-by-step explanation:
tdfsg sdyhfgjsdhgksj sfbsfghsk
P(n)=n to the second power-2n; find p(-7)
Please help!
Which net represents the pyramid below?
Image of a hexagonal pyramid.
(3 points)
A net is shown. Two hexagons connected by a square. From the hexagon on the bottom, there are 5 more squares connected to it.
A net is shown. There are six rectangles connected together. From the fourth rectangle, there is a hexagon on the top and the bottom.
A hexagon with a square connected to each side with dotted lines.
A hexagon with a triangle connected with a dotted line to each of the sides.
Answer: B
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
A circle has a circumference of 12 inches. What is the approximate area of the circle?
A. 1.91 inches 2
B. 11.46 inches 2
C. 113.04 inches 2
D. 452.16 inches 2
Is it true that all multiples of 5 end with 5 or 0?
Answer:
yes
Step-by-step explanation:
Answer:
True
Step-by-step explanation:
How do you express 45mins as percentange of 1hr30mins
WHAT IS THE EQUATION OF THE LINES IN SLOPE -INTERCEPT FORM ?
Answer:
y=x+700
Step-by-step explanation:
Given the visual graph, the y-intercept is 700, and the slope is 1, therefore the equation of the line in slope-intercept form is y=x+700
-3(4u-v)-5(-v+3u)
For 20 points
Answer:
−27u + 8v
Explanation:
−3(4u − v) − 5( − v + 3u)
[ Distribute ]
= (−3)(4u) + (−3)(−v) + (−5)(−v) + (−5)(3u)
= −12u + 3v + 5v + −15u
[ Combine Like Terms ]
= −12u + 3v + 5v + −15u
= (−12u + −15u) + (3v + 5v)
= −27u + 8v
- PNW
help! I’m not sure what this is
Answer:
Equation of line passing through points is: [tex]y=\frac{7}{2}x-6[/tex]
Step-by-step explanation:
Given points are;
(-4, -20) and (12, 36)
First we will find slope of the equation,
m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m = \frac{36-(-20)}{12-(-4)}\\\\m = \frac{36+20}{12+4}\\\\m = \frac{56}{16}\\\\m = \frac{7}{2}[/tex]
Equation of a line is given by;
y = mx + b
Putting (-4, -20) in this equation to find b.
[tex]-20=\frac{7}{2}*-4+b\\-20 = -14 + b \\-20+14 = b \\b = -6[/tex]
The equation is;
[tex]y = \frac{7}{2}x - 6[/tex]
Hence,
Equation of line passing through points is: [tex]y=\frac{7}{2}x-6[/tex]
Measuring Circles: End-of-Unit Assessment (B)
1. A circle has radius 40 cm. Which of these is closest to its area?
A. 10,053 cm2
B. 5,026 cm?
C. 251 cm2
D. 126 cm?
A circle is a two-dimensional figure with a radius and circumference of
2πr.
The area of a circle is given as πr²
Where r is the radius of the circle.
The area closest to 5024 cm² is 5026 cm².
Option B is the correct answer.
What is a circle?
A circle is a two-dimensional figure with a radius and circumference of
2πr.
The area of a circle is given as πr²
r is the radius of the circle.
Example:
The area of a circle with a radius of 2 cm is 4π cm².
We have,
The radius of the circle = 40 cm.
The area of the circle = πr²
Now,
Area of the circle.
= π x 40²
= π x 40 x 40
[ π = 3.14 ]
= 3.14 x 40 x 40
= 5024 cm²
We see that,
5024 cm² is closest to 5026 cm².
Thus,
The area closest to 5024 cm² is 5026 cm².
Option B is the correct answer.
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Hey who can solve this
If a figure is reflected over the x-axis and then reflected over the y-axis, what one transformation would accomplish the same end resulting figure?
Answer:
rotation
by rotating the figure clockwise 180 degrees you would get the same thing as reflected it over the x and then the y axis
In most cases; when an object is transformed, the orientation and layout of the object changes. The one transformation that will accomplish this is 180 degrees rotation.
Let the point on the figure be (x,y)
When reflected over the x-axis, the transformation rule is:
[tex](x,y) \to (x,-y)[/tex]
When reflected over the y-axis, the transformation rule is:
[tex](x,y) \to (-x,y)[/tex]
This means that:
[tex](x,-y) \to (-x,-y)[/tex]
So, the reflection is:
[tex](x,y) \to (x,-y) \to (-x,-y)[/tex]
The single transformation that can achieve this is: rotation by 180 degrees.
The rule of transformation is:
[tex](x,y) \to (-x,-y)[/tex]
Hence, one transformation that would accomplish the reflections is: 180 degrees rotation.
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Imagine a population of birds with an initial size of 100, a per-capita birth rate of 2, and a per-capita death rate of 1 per year. Use the discrete time form of the exponential growth equation to predict the number of individuals in this population after 5 years of growth.
Answer:
3200
Step-by-step explanation:
Given that:
The initial population of birds [tex]N_0[/tex] = 100
The time duration t = 5 years
Growth rate (r) = (Birth - Death) rate
= 2 - 1
= 1 / year
∴
using the discrete-time form:
[tex]N_t = N_o (1 + r )^t[/tex]
[tex]N_t = 100 (1 + 1 )^5[/tex]
[tex]N_t = 100 (2 )^5[/tex]
[tex]N_t = 100 \times 32[/tex]
[tex]N_t = 3200[/tex]
Can someone help me please
Statement
1. SVX =UTX
2______
3_______
4 VUTS is a parallelogram
Reason
5 Given
6. Given
7_________
8_________
Answer:
Step-by-step explanation:
ΔSVX ≅ ΔUTX Given
SV // TU Given
SV ≅ TU Corresponding part of congruent triangle
VUTS parallelogram Definition of parallelogram.
Hint: 1) If any one pair of opposite side is congruent and parallel, then the quadrilateral is parallelogram.
2) If two pair of opposite sides are parallel then it is a parallelogram.
Answer:
ΔSVX ≅ ΔUTX Given
SV // TU Given
SV ≅ TU Corresponding parts of a congruent triangle are congruent
VUTS is a parallelogram Def. of parallelogram.
Step-by-step explanation: