Where is the question ✅
________________
a car travels the first 15 km of the journey at an average speed 60km/h and the remaining 40 km at an average speed of 30 km/h find the average speed of the whole journey
Answer:
the average speed of the whole journey is 45 km/h
Step-by-step explanation:
The computation of the average speed of the whole journey is shown below:
Average speed is
= (Speed 1 + speed 2) ÷ 2
= (60 km/h + 30 km/h) ÷ 2
= 90 km/h ÷ 2
= 45 km/h
Hence, the average speed of the whole journey is 45 km/h
We simply ignored the distance as it is not relevant for the given situation
The same would be considered
How do you leave an answer in terms of pi?
In terms of pi means to include pi in your answer. In other words, don't use 3.14 or 22/7 for pi.
a rectangular garden has a perimeter of 100 meters. the length is four times it’s width. find the dimensions of the garden.
Answer:
Step-by-step explanation:
p = 100
l = 4w
l = 80
w = 20
80 = 20*4
1 - (-3) 2+ (-3) - 5
Answer:
1 - (-3) X 2 + (-3) - 5 = ?
To find your answer, first group the same number if there are any. In this situation, there are two -3.
You can take your calculator if you have one and input your information.
In the end, you should get -1 as your final answer.
Step-by-step explanation:
Hope that this helps! :)
Have a great rest of your day/night!
Please help me in this. ASAP!
Answer:
Thermal energy -- sand on beach feels warm to touch
Gravitational potential energy -- a piece of fruit hanging from a tree
Electric energy -- Lightning produced during a storm
Kinetic energy -- A box moving along a conveyer belt
Radiant energy -- Radio waves transmitted from a tower
Step-by-step explanation:
PLZ mark me as brainliest
What are the coordinates of the point (-1, 5) when it is reflected across the y-axis? *
Answer:
1,5
Step-by-step explanation:
when reflecting across y-axis it'll be in the same order, but using whatever form that quarter of the coordinate plane is in (e.g. 5,7 ----> -5,7)
Solve for the number problem 11
Answer:
1,000
Step-by-step explanation:
10x10x10 = 1,000
this lock has 1,000 possible combinations
At sunrise the temperature was -12 C. By sunset the temperature had increased 5 degrees. What is the temperature at sunset? *At sunset the temperature was 19 C. By sunrise the temperature had decreased 4 degrees. What is the temperature at sunrise?
Answer:
-17°C at sunset
15°C at sunrise
Given that ac=22 and bc=7, find ab
Answer:
I'll look into that answer
if possible, verify sin^2(x)/1 + cos(x) = 1 - cos(x) by rewriting the left hand side of the equation.
I really really don't understand identities, and I'm not getting replies from my teacher. Thank you for any help I do get!!
sin^2(x)/1 + cos(x) = 1 - cos(x)
We know that sin^2 x = 1 - cos^2 x. It is one of our trig identities.
We now have this:
(1 - cos^2 x)/(1 + cos x) = 1 - cos x
Take note:
1 - cos^2 x is a perfect square difference in terms of cosine.
So, (1 - cos^2 x) = (1 + cos x)(1 - cos x).
We now have this:
[(1 + cos x)(1 - cos x)]/(1 + cos x) = 1 - cos x
Do you see what happens on theft side?
On the left side, (1 + cos x) cancels out on the top and bottom.
We are now left with this:
1 - cos x = 1 - cos x
Done!!
Which expressions are equivalent to the one below? Check all that apply.
log 2 - log 6
A. log 3
B. log(2) + log
log(3)
C. log(3)
D. log 2
Answer:
c
Step-by-step explanation:
log2-log 6=log(2/6)=log (1/3)
log(2) + log(1/6)
log(1/3)
HELP!!! ANYONE!! ASAP!!!
Answer:
A
Step-by-step explanation:
I'm not going to give an explanation but for next time, the stem is the tens place and the leaf is the ones place.
Which expression is equivalent to 1 4 ( 3 x + 4 y ) + 3 ( 1 4 x + 2 3 y ) ? 3 2 x + 3 y 3 halves x plus 3 y 3 2 x + 2 y 3 halves x plus 2 y 3 4 x 2 + 3 y 3 fourths x squared plus 3 y 3 4 x 2 + 2 y
Answer:
3x/2 + 3y
Step-by-step explanation:
Given the expression 1/4 ( 3x + 4y ) + 3 ( 1/4 x + 2/3 y)
Open the parentheses
= 1/4(3x) + 1/4(4y) + 3(1/4x) +3(2/3y)
= 3/4 x + y + 3/4 x +2y
Collect like terms
3/4 x +3/4 x +y+2y
6/4 x + 3y
3x/2 + 3y
Hence the correct expression is 3x/2 + 3y
What is the mean? If the answer is a decimal, round it to the nearest tenth.
-4 ,4 ,6 ,-7 ,7, 10, 7,9
Answer:
The mean is 4 if im correct.
Answer:
4
Step-by-step explanation:
-4+4+6+-7+7+10+7+9=32
32/8=4
help me pls. my teacher asks a question and we are doing ratio.
what is the smaller ratio, 32:24 or 30:22?
I do not understand how to find the smaller ratio, I have five pages of notes and she hasn't explained, am I supposed to simplify and add and see which total is smaller?
Answer:
32:24
Step-by-step explanation:
So ratios are like fractions
You can write 32:24 like [tex]\frac{32}{24}[/tex]
and 30:22 like [tex]\frac{30}{22}[/tex]
Like fractions you can simplify them, you want to get the denominator or the bottom numbers the same so you can compare the top number.
[tex]\frac{32}{24}[/tex] [tex]\frac{30}{22}[/tex] One way to make the denominator the same is to do 24x22=528
then do 32x22=704 then 30x24=720
Then that gives you [tex]\frac{704}{528} \frac{720}{528}[/tex] Here you can see that 704 is smaller then 720
and since 704 is the same as 32:24
32:24 is the smaller ratio
A teepee is in the shape of a cone. The teepee is 12.5 feet high, 16 feet wide. Find the volume of air that occupies the teepee, assuming it is empty.
Answer:
837.8 ft²
Step-by-step explanation:
The formula for the volume of a cone of base radius r and height h is
V = (1/3)(base area)(height), which here is:
V = (1/3)(π·8² ft²)(12.5 ft), or
V = (π/3)(64 ft²)(12.5 ft) = 837.8 ft²
What is the Mode? 21,28.27.26.27.27.33.28.26.31
Answer:
The mode is 27.
Step-by-step explanation:
To find the mode we must first put them in order from least to greatest.
21, 26, 26, 27, 27, 27, 28, 28, 31, 33
The mode means the most common number out of the data. Therefore since 27 is the most common number, it is the mode.
Hey there!
The mode is basically the number you see MORE THAN ONCE.
So, the numbers in your data plot is/are
“21, 28, 27, 26, 27, 27, 33, 28, 26, 31”
(I’m assuming)
21 is shown ONE TIME
28 is shown TWO TIMES
27 is shown THREE TIMES
26 is shown TWO TIMES
33 is shown ONE TIME
31 is shown ONE TIME
THE BIGGEST ONE THAT’S SHOWN IS: 27 because it was shown in your data plot three times
Answer: 27
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Marking brainliest.
Answer:
B. 173.25 cm^2
Step-by-step explanation:
just multiply them all.
suppose I have a 30, 60, 90 right triangle. The hypotenuse is 10 units long. How long are the other sides?
a) short leg = 5; long leg = 5 √2
b) short and long leg = 5 √2
c) short leg = 5; long leg = 5 √3
d) short leg = 5; long leg =8
Answer:
option c
Step-by-step explanation:
The angles are 30° , 60° , 90° . So its a right angled triangle . We can use trigo.
⇒ sin 30 = p/h
⇒ 1/2 = p/10
⇒ p = 10/2
⇒ p = 5
Using Cosine now ,
⇒ cos 30° = b/h
⇒ √3/2 = b/10
⇒ b = √3/2 × 10
⇒ b = 5√3
Short leg = 5Long leg = 5√3 Hence option C is correct.Answer:
c) short leg = 5; long leg = 5 √3
Step-by-step explanation:
How long are the other sides?
short leg = 5; long leg = 5 √3
Eleanor must earn at least 70 points for her book report project. So far on the rubric she has 54 points. Write and solve an inequality to show how many points Madeline needs.
Answer:
[tex]x + 54\ge 70[/tex]
[tex]x \ge 16[/tex]
Step-by-step explanation:
Given
[tex]Total = 70[/tex] (at least)
[tex]Accumulated = 54[/tex]
Required
Express as an inequality
In inequalities, at least means [tex]\ge[/tex]
So, the expression is:
[tex]x + Accumulated \ge Total[/tex]
Where x represents the additional points
[tex]x + 54\ge 70[/tex]
Solve for x
[tex]x \ge 70 - 54[/tex]
[tex]x \ge 16[/tex]
Hence, she needs at least 16 points
A grocery store sells an 8 ounce bottle of juice for $1.76 what is the cost of the juice per ounce? Show your work
Answer:
22 cents
Step-by-step explanation:
8 ounces coat $1.76
So,
1 ounce costs $1.76 divided by 8 = $ 0.22 = 22cents
Hope this helps
If a grocery store sells an 8 ounce bottle of juice for $1.76. The cost of the juice per ounce is: $0.22.
Cost of juice per ounceUsing this formula
Cost of juice per ounce=Cost of juice/Ounce bottle of juice
Where:
Cost of juice=$1.76
Ounce bottle of juice=8 ounce
Let plug in the formula
Cost of juice per ounce=$1.76/8
Cost of juice per ounce=$0.22 per ounce
Inconclusion the cost of the juice per ounce is: $0.22.
Learn more about Cost of juice per ounce here:https://brainly.com/question/1564020
Distributive property and Combine like terms
Answer:
k = 55
Step-by-step explanation:
First clear the fraction by multiplying all three terms by 5. We get:
k - 10 = 45
Adding 10 to both sides results in
k = 55 (after having combined like terms)
what does x = ?
please please help
Question
what does x = ?
please please help
5x(2x+20)= 90
10x=90-20
10x=70
x=70/10
x=7
plz give brainliest +thanks
Answer:
10°
Step-by-step explanation:
5x + 2x + 20° = 90° { Being complementary angles }
7x = 90° - 20°
7x = 70°
x = 70° / 7
x = 10°
Hope it will help :)❤
Unit 7: Polygons & Quadrilaterals
Homework 3: Rectangles
a 2-page document! **
Answer:
VW = 31
WX = 19
YW = [tex]\sqrt{1322}[/tex]
ZX = ([tex]\sqrt{1322}[/tex]) / 2
VX = [tex]\sqrt{1322}[/tex]
Step-by-step explanation:
[tex]YW^{2}[/tex] = [tex]19^{2}[/tex] + [tex]31^{2}[/tex]
[tex]19^{2}[/tex] + [tex]31^{2}[/tex] = 1322
ZX = YW/2 = VX/2
Measures of the different sides of the rectangle will be,
YX = 31 units
WX = 19 units
VW = 36.36 units
ZX = 18.18 units
VX = 36.36 units
Quadrilateral VWXY is a rectangle.
Properties of a rectangle,
Opposite sides of a rectangle are equal.Diagonals of a rectangle bisect each other.Diagonals are equal in measure.YX = VW = 31 units
VY = WX = 19 units
By applying Pythagoras Theorem in right triangle ΔWXY,
(Hypotenuse)² = (Leg 1)² + (Leg 2)²
(WY)² = (WX)² + (XY)²
YW = [tex]\sqrt{19^2+31^2}[/tex]
= [tex]\sqrt{1322}[/tex]
= 36.36 units
ZX = [tex]\frac{1}{2}(YW)[/tex]
= [tex]\frac{1}{2}(36.36)[/tex]
= 18.18 units
VX = YW = 36.36 units
Learn more,
https://brainly.com/question/9655204
*PLEASE HELP*
The table to the right shows the results of a survey taken
of what students wanted to have as their first car.
The options were sedan (4-door car), truck, SUV, coupe (2-door car), or other.
What are the odds that a student chose either a truck or an SUV?
A). 35/112
B) 29/56
C) 23/112
D) 31/56
Answer:
So we have either a truck or a SUV
so we need the probability of both
35+23/Total
so 35/112
What is the factored form of the expression x^2 - 16?
Answer:
(x + 4)(x - 4)
Step-by-step explanation:
Answer:
( − 4 ) ( + 4 )
Step-by-step explanation:
x^2 - 16
x^2 + 4x - 4x = 16
x^2 + 4x - 4x - 16
( + 4 ) − 4 ( + 4 )
( − 4 ) ( + 4 )
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
HURRY 50 POINTS
Which is the correct classification and decimal expansion of StartFraction 5 Over 8 EndFraction?
irrational number, 0.6ModifyingAbove 25 with bar
irrational number, 0.625
rational number, 0.625
rational number, 0.6ModifyingAbove 25 with bar
Answer:
the correct classification and decimal expansion of StartFraction 5 Over 8 EndFraction
=5/8=0.625[irrational number]
Answer:
The correct answer is (b) i believe
Step-by-step explanation:
Have a great day!
Find the scale factor that was used
A rectangle has a perimeter of 10 meters.
Choose all the possible dimensions of the rectangle.
D A
1 meter by 4 meters
B.
1 meter by 9 meters
C. 2 meters by 3 meters
OD. 3 meters by 2 meters
O E. 4 meters by 1 meter
OF. 5 meters by 5 meters
G. 9 meters by 1 meter
Answer:
DA
C
OD
OE
Step-by-step explanation:
Answer:
DA
1 meter by 4 meters
Step-by-step explanation:
To find the perimeter of a rectangle, you add up all four sides.
if a rectangles dimensions are 1 by 4, you would add 4 + 4 + 1 + 1 = 10
Hope this helps
Central and inscribed angle practice
Answer:
sorry
Step-by-step explanation:
I don't know what you want , do you want to know how to construct an inscribed angle or what