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
Angle a is _______ degrees.
Angle b is _______ degrees.
Answer:
a=60° b=55°
Step-by-step explanation:
using the exterior angle property it's suopposed to add up to 180° so we make a the subject of the formula subtracting 180-120 .... again the same for b
Complete the table below to classify the triangles as scalene or isosceles.
Triangle
Classification
2
2
3
5
10
9
<
3
Answer:
1) Isosceles
2) Scalene
3) Scalene
Step-by-step explanation:
The 1st choice is isosceles because 2 side lengths are equal.
The 2nd and 3rd choice are scalene because none of the sides equal the other sides.
hello! can someone please help me find the ones that are NOT equivalent, I would greatly appreciate the help.
Answer:
B D F
Step-by-step explanation:
I dont really know how to explain it, and I need to reach 20 characters for an answer so pretend this is a good explanation
One bead for every member of the school orchestra is placed in a bag. All but 2 of the beads are white. Each member draws a bead from the bag, and the members who pick the non-white beads will represent the orchestra. It is predicted that two different instrument players will choose the white beads.
We are to say whether the conclusion is valid.
Answer:
Statement is valid.
Step-by-step explanation:
We are told that One bead is placed in a bag for every member of the school orchestra.
Also that all the beads except for 2 are white. Now, each member takes a bead from the bag and those who lick the non-white will represent the orchestra.
This tells us that this is an unbiased sample because it doesn't give anyone a better chance of picking non-white as every member of the school orchestra has an equal chance since it is randomly selected.
Thus, we can conclude that the statement that two different instrument players will choose the white beads is valid because we are dealing with an unbiased and simple random sampling
Two congruent triangles, ΔABC and ΔRST, are shown below.
Describe a sequence of transformations that exhibits the congruency of ΔABC and ΔRST.
A: Reflect ΔABC across the y-axis and then translate the resulting figure 4 units down.
B: Reflect ΔABC across the x-axis and then translate the resulting figure 4 units to the right.
C: Reflect ΔABC across the x-axis and then reflect the resulting figure across the y-axis.
D: Reflect ΔABC across the x-axis and then rotate the resulting figure 90 degrees counterclockwise about the origin.
At Marco’s Pizza House it costs $4.00 to make a small pizza. If they intend to mark-up the pizza by 80% what will the cost be for customers?
Answer:
$7.20
Step-by-step explanation:
4 times 0.8 is 3.20
Add them together to get the new cost
Answer:
$7.20
Step-by-step explanation:
select all ratios equivalent to 30:6
Answer:
60 : 12
90 : 18
120 : 24
150 : 30
Solve each equation
For points!!
Answer:
X = 13
X = 13
X = 13
X = 98
X = 8
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
Helpppppppppppppppppppppp
Answer:
8.04 units
Step-by-step explanation:
By Pythagoras Theorem:
[tex] {x}^{2} = \bigg( \frac{25.2}{2} \bigg)^{2} - {(9.7)}^{2} \\ \\ {x}^{2} = ( 12.6)^{2} - {(9.7)}^{2} \\ \\ {x}^{2} = 64.67 \\ \\ x = \sqrt{64.67} \\ \\ x = 8.04176598 \\ \\ x \approx \: 8.04[/tex]
A local hamburger shop sold a combined total of 427 hamburgers and cheeseburgers on Thursday. There were 73 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Thursday?
Answer:
250 hamburgers
Step-by-step explanation:
Explanation: Because IK
f the quadratic function f(x) = x2^2 is graphed below along with the quadratic function g(x) which of the following could
be a correct equation for g(x)?
Answer: g(x)= -1/2x^2
Step-by-step explanation: since the parabola is opening downwards it would have to be a negative so all we are left with is g(x)=-2x^2 and g(x)-1/2x^2 and if we go in the calculator and type up each equations you would see our answers is g(x)=-1/2x^2
A movie theater has a seating capacity of 291. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. There are half as many adults as there are children. If the total ticket sales was $ 2110, How many children, students, and adults attended?
children attended.
students attended.
adults attended.
Patty are is. 3 times audreys age plus 7. Party is 37. What is audreys age?
Answer:
19
Step-by-step explanation:
37/3= 12. something
12+7+19
HELP ILL GIVE BRAINLIEST
Answer:
D
Step-by-step explanation:
A reporter claims that 90% of American adults cannot name the current vice president of the United States. To
investigate this claim, the reporter selects a random sample of 50 American adults and finds that 28 are unable to name the current vice president. The reporter would like to know if the data provide convincing evidence that fewer than 90% of American adults are unable to name the current vice president. Are the conditions for inference met?
a)Yes, the conditions for inference are met.
b) No, the 10% condition is not met.
c) No, the Large Counts Condition is not met.
d) No, the randomness condition is not met.
Answer:
Not A or D
Step-by-step explanation:
edge 21
HELP PLEASE PLEASE!
18.) Savings: You have decided to put 12% of your weekly paycheck into a
savings account. You made $85.50 las week. How much did you put into
the savings account? *
$12.26
$8.55
$10.26
Other:
Answer:
$10.26
Step-by-step explanation:
....................
Answer:
712.5
Step-by-step explanation:
Hey, if you can help I would love it.
Answer:
the answer is C
Step-by-step explanation:
the number line shows the numbers 70/100 - 80/100. the x appears 6 lines after 70/100 which is 0.76
Is this correct please help
What the prime number 5 7 10 11 13
Answer:
5 is a prime number
Step-by-step explanation:
Solve for x:
5x+1=6x+9
Answer: -8
Step-by-step explanation:
Which Statement is true?
Answer:
All parallelograms are quadrilaterals
Step-by-step explanation:
All parallelograms are quadrilaterals is true statement.
What are Quadrilaterals?a quadrilateral is a four-sided polygon, having four edges and four corners
A parallelogram is a simple quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.
All parallelograms are rectangles is not true because all rectangles are parallelograms, but all parallelograms are not rectangles.
All parallelograms are quadrilaterals is true.
All parallelograms are not rhombuses. Parallelograms with non equal adjacent sides are not rhombuses.
All parallelograms are not squares.
Hence, All parallelograms are quadrilaterals is true statement.
To learn more on Quadrilaterals click:
https://brainly.com/question/29934440
#SPJ5
In the hormone replacement studies of menopausal women, doctors rejected the results of the observational study after conducting the experiment. In the experiment they controlled the effects of confounding variables that had probably influenced the results in the observational study. In the experiment the doctors used random assignment to treatment groups, a placebo, and double blinding to control the effects of confounding variables. Which of the following are potential confounding variables? Check all that apply.
A. whether a woman took hormones
B. whether a woman in the study had a heart attack
C. wealth
D. access to health care
Answer:
A. whether a woman took hormones.
B. whether to woman in the study had a heart attack.
D. access to health care
Step-by-step explanation:
The study conducted to observe the menopausal woman must be supported with their health history. Some woman may have menopause at an early age while other go towards this at a later age. This can be due to smoking, hormone intake, severe diseases like heart attack or cancer and their routine health checkup details. There variables must be observed and included in experiment to reach a conclusion.
I cannot find the answer to this question please help
How would the domain and range of the function
1
y = -x - 6 be determined? Explain.
4
Answer:
Step-by-step explanation:
I will focus on your function y = -x - 6.
First of all, this is a linear function. All linear functions have unlimited domain and range: (negative infinity, positive infinity).
If you meant (1/4)y = - x - 6, exactly the same response would be true.
Can someone help me please.?
Answer:
be+bh=eh.
Step-by-step explanation:
am I right or wrong
can someone please help
find slope/rate of change
a. 1/3
b. 3
c. 30
d. 10
Answer:
3
Step-by-step explanation:
Pick two points on the line
(0,0) and (10,30)
Using the slope formula
m = (y2-y1)/(x2-x1)
= (30-0)/(10-0)
= 30/10
= 3
GHJU is a rhombus. how could you prove that <3~=<2? this doesn’t have to be a formal proof, just a basic outline of an augment. how would you approach this proof?
Answer:
Angle 3 is equal to Angle 2 because when you have a rhombus, the diagonals will always bisect the angles.
Step-by-step explanation:
PLEASE HELP ME *begs*
Answer: 2
Step-by-step explanation: so just plug in the numbers first 3(4)-2(-1)-9+3(-1)
then easy just solve remember two negatives equal a positive so 3 times the 4 is 12 and then -2 and -1 is just a positive 2 then minus the 9 and then add -3 because a positive and a negative is a negative and written out that all is 12+2-9+(-3) then it's 14-9 which is 5 then 5+ (-3) is positive 2 so boom lol I hope this helps! let me know if you need any more help! :')
Answer:
2
Step-by-step explanation:
║x = 4
║y = −1
3x − 2y − 9 + 3y
↓
3x + y − 9
↓
[(4 ⋅ 3) − 1] − 9
↓
(12 − 1) − 9
↓
11 − 9
↓
2
Next time, begging won't work. You'll need to provide a human sacrifice.
Solve for x and round your answer to the nearest tenth.
Answer:
I believe it should be 32.9
Step-by-step explanation: