Answer:
Step-by-step explanation:
Using the relation :
S = ut + 1/2at²
S = distance
Car A :
Initial speed, u = 40 mph
a = negative acceleration = - 1 mph
At time, t = 4
S = 40(4) - 0.5(1)(4²)
S = 160 - 8
S = 152 miles
Car B :
Initial speed, u = 30 mph
a = acceleration = 0.5 mph
S = 30(4) - 0.5(1)(4²)
S = 120 - 8
S = 118 m
Change in distance / time
Rate of change = (152 - 118)m / 4 hours
Rate of change = 34 mi / 4 hr
Rate of change = 8.5 miles per hour
How many coins are in each pouch?
LINKS = reported ,, anyways I’ll give brainliest if ur right
Find the volume of this sphere.
Round to the nearest tenth.
7in
Formulas for Spheres
S.A. = 41112
Varr
? 1 in 3
Answer:
1436.02
Step-by-step explanation:
A, B and C lie on a straight line.
Given that angle y = 135° and angle z = 97°, work out x.
Answer:
135°+97°+x=180°. 232°+x=180°. x=232-180=102°
:x=102°
A bag contains 4 red marbles and 2 white marbles. A marble is selected, returned to the bag, and then another marble is selected. Find P(red, then white).
Answer:
2/9
Step-by-step explanation:
What is the speed of a wave that has a wavelength of 2m and frequency of 1.5 Hz?
Doc Below
In ΔQRS, q = 960 cm, r = 420 cm and ∠S=31°. Find the area of ΔQRS, to the nearest square centimeter.
Answer: 103832
Step-by-step explanation:
What is 5⁶ written in expanded form? o 5+5+5+5+5+5 5.5.5.5.5.5
Answer:
5x5x5x5x5x5
Step-by-step explanation:
hey peeps i'll give you a brainliest & 25 pts for these answers plss help a dum b b out <333
you know that your line is perpendicular to the line with equation y equals 3x + 5 right whenever a line is perpendicular to another perpendicular not parallel to the line has a negative slope of the other line for example if you had a line with slope 2 x in the line perpendicular to that would have slope -1 / 2X so then you line in your question has slope -1 / 3 x by doing the Rococo of 3 and adding a negative sign to your equation sulfur looks like this y equals negative 1 / 3 x + B where is B is a constant 3 all you have to do is solve for b is a plug in the coordinate values 6 equals x minus -2 equals one in rearrange y equals -1 / 3 x + B negative two equals negative one over three 6 plus b negative two equals negative two plus be there for me easy roast F4U equation of the line is y equals -1 / 3 x
ABCD is an isosceles trapezoid.
measure of angle b=
measure of angle d=
measure of angle c=
Answer:
∡b = 53°
∡d = 127°
∡c = 127°
Step-by-step explanation:
in trapezoids, the two top angles are equal and the two bottom are equal
also, there are 360 degrees in any 4-sided polygon
53 + 53 + x + x = 360
2x + 106 = 360
2x = 254
x = 127
Answer:
127
Step-by-step explanation:
60 POINTS! RIGHT ANSWERS ONLY PLEASE
Which of the following is a binomial experiment?
Rolling a six-sided number cube and recording the number until a 5 comes up
Rolling a six-sided number cube and recording the number until an odd number comes up
Rolling a six-sided number cube 24 times and recording the number that comes up
Rolling a six-sided number cube 24 times and recording if a 5 comes up
Answer: Rolling a six-sided number cube 24 times and recording if a 5 comes up
Thank you for being so generous with the points!! <3
Find the measure of angle b
please help:)
Can somebody please help me out:))
Answer:
50ft
Step-by-step explanation:
Hi,
Considering that one side is equal to 38 degrees, we know this isn't a 30 - 60 - 90 triangle.
One of the legs is equal to 40 feet
So, tan(b) = 40/x
tan(38 degrees) is 0.78 round up to 0.8 (if that's what your teacher wants)
0.8 = 40/x
0.8x = 40
x = 50ft
I hope this helps
Verify that TUV ~ XYZ. Find the scale factor of TUV to XYZ.
Answer:
35
Step-by-step explanation:
Answer:
35
Step-by-step explanation:
A parabola has a vertex at (-6, 2) and opens down. Which of the following represents the
equation of the axis of symmetry for this parabola?
Answer:
I don't see any choices but I think the axis of symmetry is x=-6.
Step-by-step explanation:
Name the polygon. Then tell whether it is a regular polygon or not a regular polygon.
The polygons name is an octagon and is not a regular polygon
PLEASEEEEEEEE HELLLP MEEE!!! GIVING 95 POINTS!!!
Answer:
1) markdown
2) percent error
3) principle
4) percent change
Step-by-step explanation:
markdown
percent error
principle
percent change
Hope I could help <3
Glenda paid $23 for 6 books.What is the rate that Glenda paid for each book?
Answer:
$[tex]3.83[/tex]
Step-by-step explanation:
[tex]23[/tex] divided by [tex]6=3.83333333333.....[/tex]
We round to nearest cent. [tex]3.83[/tex]
What is the total surface area of this square pyramid?
204 cm2
384 cm2
72 cm2
240 cm2
Answer: 384 cm²
Step-by-step explanation:
Took test
Answer:
Answer: 384 cm²
Step-by-step explanation:
The equation of the line A is 3x+2y=10.line B is parallel to line A and passes through the points (4,6).find the equation of the line B.
Answer: [tex]y=-\frac{3}{2}x+12[/tex]
Step-by-step explanation:
To find the equation of line B, we need to find the slope first, then the y-intercept. We first want to convert line A into slope-intercept form, so we can find the slope.
[tex]3x+2y=10[/tex] [subtract both sides by 3x]
[tex]2y=10-3x[/tex] [divide both sides by 2]
[tex]y=5-\frac{3}{2}x[/tex]
With the slope-intercept form of line A, we can see that the slope is [tex]-\frac{3}{2}[/tex]. We take the slope and the given point (4,6) to find the y-intercept of line B.
[tex]y=-\frac{3}{2}x+b[/tex] [plug in (4,6)]
[tex]6=-\frac{3}{2}(4)+b[/tex] [multiply]
[tex]6=-6+b[/tex] [add both sides by 6]
[tex]b=12[/tex]
With the y-intercept, we know the equation for line B is [tex]y=-\frac{3}{2}x+12[/tex].
(50 POINTS) Math Inverse Functions please help
Answer:
See below.
Step-by-step explanation:
a. See pic below.
b. Yes because it passes the vertical line test. Any vertical line moving horizontally across the graph intersects only one point on the graph at a time.
c.
Domain: all real numbers
Range: all real numbers greater than or equal to 4
d.
Domain: all real numbers greater than or equal to 4
Range: all real numbers
e.
See pic below.
f. No because it does not pass the vertical line test.
Can someone please help me with math.
The answer is B, Graph B is the linear graph
HELPPP ASAP 10 POINTS
Answer:
4 Acute
Step-by-step explanation:
uwg2vrus7wgwceuwvw.
Find the value of x
Answer:
[tex]\frac{9\sqrt{2} }{2}[/tex]
Step-by-step explanation:
This particular case is a sine operation.
sin(45°) = [tex]\frac{x}{9}[/tex]
9sin(45°) = x
Plug into a calculator and you get:
x = [tex]\frac{9\sqrt{2} }{2}[/tex]
A survey found that women's heights are normally distributed with mean 63.7 . And standard deviation 3.7 . The survey also found that men's heights are normally distributed with mean 67.5. And standard deviation 3.7. Consider an executive jet that seats six with a doorway height of 56.4. Complete parts (a) through (c) below.
Complete question :
A survey found that women's heights are normally distributed with mean 63.6 in and standard deviation 3.7 in. The survey also found that men's heights are normally distributed with mean 69.3 in and standard deviation 3.7 in. Consider an executive jet that seats six with a doorway height of 55.7 in.
1-What percentage of adult men can fit through the door without bending?
2-) Does the door design with a height of 56.35in. appear to be adequate? Why didn't the engineers design a larger door? Choose answer below
A. The door design is inadequate, because every person needs to be able to get into the aircraft without bending. There is no reason why this should not be implemented.
B. The door design is adequate, because the majority of people will be able to fit without bending. Thus, a larger door is not needed.
C. The door design is inadequate, but because the jet is relatively small and seats only six people, a much higher door would require major changes in the design and cost of the jet, making a larger height not practical.
D. The door design is adequate, because although many men will not be able to fit without bending, most women will be able to fit without bending. Thus, a larger door is not needed.
Answer:
A.) 0.135%
B.) C. The door design is inadequate, but because the jet is relatively small and seats only six people, a much higher door would require major changes in the design and cost of the jet, making a larger height not practical.
C.)
Step-by-step explanation:
Percentage of adult men that can fit the door without bending :
Obtain the Zscore :
Mean height of men, m = 67.5
Standard deviation, s = 3.7
Zscore = (x - m) / s ; where x = 56.4
Zscore = (56.4 - 67.5) / 3.7
Zscore = - 11.1 / 3.7
Zscore = - 3
P(Z < - 3) = 0.0013499 (Z probability calculator)
P(Z < - 3) = 0.0013499 * 100% = 0.13499%
Which set of side lengths create a right triangle ?
Answer:
9,12,15 i think
Step-by-step explanation:
What relationship CANNOT be used to prove that AABC is congruent to ADEF?
Help please!!!
Answer:
D) Angle angle angle
SOLVE FOR THE BASE
1. 10% of ________-8
2.28 is 4% of _________
3.25% of ________
4.13% of______
5.15 is 12.5% of _____
Answer:
1- 10% of -80 is -8.
2- 28 is 4% of 700.
3- 25% of a number is equal to 1/4 or 0.25 of it.
4- 13% of a number is equal to 0.13 of it.
5- 15 is 12.5% of 120.
Step-by-step explanation:
1. 10% of ________- 8
2.28 is 4% of _________
3.25% of ________
4.13% of______
5.15 is 12.5% of _____
To determine the missing numbers in the statements, the following calculations must be performed:
1-
10 = -8
100 = X
100 x -8 / 10 = X
-800 / 10 = X
-80 = X
Therefore, 10% of -80 is -8.
two-
4 = 28
100 = X
100 x 28/4 = X
2800/4 = X
700 = X
Therefore, 28 is 4% of 700.
3-
25% of a number is equal to 1/4 or 0.25 of it.
4-
13% of a number is equal to 0.13 of it.
5-
12.5 = 15
100 = X
100 x 15 / 12.5 = X
1500 / 12.5 = X
120 = X
Therefore, 15 is 12.5% of 120.
Billy got 4 hits in his last 20 at-bats. Based upon this information, how many hits would you expect Billy to get during his next 50 at-bats?
Answer:
10
Step-by-step explanation:
4 hits x hits
_______ = _________
20 at-bats 50 at -bats
Don drives his car 25 km east and then 312 km south. How far is he from his starting point? Round to the nearest tenth.
y is directly proportional to the square root of x
x
If
y
=
60
when
x
=
36
find,
x
when
y
=
80
Answer:
Step-by-step explanation:
y=k[tex]\sqrt{x}[/tex]
60=k[tex]\sqrt{36\\}[/tex] =k6
k=60/6 =10
This is your equation
y=10[tex]\sqrt{x}[/tex]
Put the numbers in
80=10[tex]\sqrt{x}[/tex]
80/10=8 then you have to square this so
[tex]8^{2}[/tex]=64
x=64