a car travels 120 km in one and a half hours. what is the average speed

Answers

Answer 1

Answer:

The speed would be 60kph.

Answer 2

Answer:

80 mph (average)

Step-by-step explanation:

Split 120 into thirds, each one being half an hour.

120/3=40

Add two of them together, getting 80.

40x2(or 40+40)=80

Since the car travels 80 miles in one hour, 80 mph is the average speed.


Related Questions

A school track is shown. 1000 m 74 m The straightaway on each side measures 1,000 meters. The curves are semicircles with diameter 74 meters. What is the distance, in meters, around the entire track? Use the a button on your calculator and express your answer to the nearest hundredth. The distance is meters.

Answers

Answer:

You have Rs 2,400 in your account and the interest rate is 5%. After how many years

would you earn Rs 240 as interest.

Step-by-step explanation:

Distance around entire school track  = 2232.48 meters

What is perimeter?

In geometry, the perimeter of a shape is defined as the total length of its boundary. The perimeter of a shape is determined by adding the length of all the sides and edges enclosing the shape. It is measured in linear units of measurement like centimeters, meters, inches, or feet.

Given,

Straight length of the track = 1000 meters on each side

total straight length = 2 × 1000 = 2000 meters

Curves are semicircles on each side having diameter of 74 meters

which makes a complete circle

Perimeter of circle = π × diameter

                               = π × 74 = 232.477856 meters

Total distance in meters = 2000 + 232.477856

                                        = 2232.477856

Hence, 2232.48 meters is the total distance around the entire track.

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Solve the system by substitution
2x + y = -14
y = -2x + 14

Answers

Answer:

Step-by-step explanation:

d

Expand the following:
a) x(x + 2)
b) x(2x - 5)
c) 2x(3x + 4)
d) 6x(x-2y)

Answers

Answer:

[A] x² + 2x

[B] 2x² - 5x

[C] 6x² + 8x

[D] 6x² - 12xy

Explanation:

x(x + 2)

Apply Distributive Law: a(b + c) = ab + ac

x(x + 2) = xx + x · 2

Simplify:

x² + 2x

x(2x - 5)

Apply Distributive Law: a(b - c) = ab - ac

x(2x - 5) = x · 2x - x · 5

Simplify:

2x² - 5x

2x(3x + 4)

Apply Distributive Law: a(b + c) = ab + ac

2x(3x + 4) = 2x · 3x + 2x · 4

Simplify:

6x² + 8x

6x(x - 2y)

Apply Distributive Law: a(b - c) = ab - ac

6x(x - 2y) = 6xx - 6x · 2y

SImplify:

6x² - 12xy

- Pacific Northwest

what is 41,250 written in scientific notation​

Answers

Why is 41,250 written as 4.125 x 104 in scientific notation?

4.125 x 104 is the answer

in the trepezium,a=7cm,b=10.4cm and h=6.7cm.work out the area of the trepezium.​

Answers

Answer:

58.29

Step-by-step explanation:

1/2 × (7+10.4) × 6.7

= 58.29

Need help with these two questions
31.
Given: AB || DC , AD || BC
Prove: ΔABC ≅ ΔCDA
Statements Reasons
1. AB || DC 1. Given
2. ∠BAC ≅ ∠DCA 2.
3. AD || BC 3. Given
4. ∠ACB ≅ ∠CAD 4.
5. AC ≅ AC 5.
6. ΔABC ≅ ΔCDA 6.

Answers

Answer:

i dont know if this is right but i put

31)

2. alternate angles

4. alternate angles

5. reflexive property

6. ASA

32)

1. DEC, EDC, DC

2. AAS

3. def. of congruent triangles

4. ACE

5. def. of isosceles triangle

If AB || DC by  Given

2. ∠BAC ≅ ∠DCA because these are alternate angles.

3. AD || BC by given

4. ∠ACB ≅ ∠CAD because these are alternate angles.

5. AC ≅ AC by reflexive property.

6. ΔABC ≅ ΔCDA by ASA property of triangle.

What is Triangle?

A triangle is a three-sided polygon that consists of three edges and three vertices.

Given that AB || DC and AD || BC

We need to prove that ΔABC ≅ ΔCDA.

Which means ΔABC is similar to ΔCDA.

Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion.

1. AB || DC by  Given

2. ∠BAC ≅ ∠DCA because these are alternate angles.

3. AD || BC by given

4. ∠ACB ≅ ∠CAD because these are alternate angles.

5. AC ≅ AC by reflexive property.

6. ΔABC ≅ ΔCDA by ASA property of triangle.

Hence, AB || DC by  Given

2. ∠BAC ≅ ∠DCA because these are alternate angles.

3. AD || BC by given

4. ∠ACB ≅ ∠CAD because these are alternate angles.

5. AC ≅ AC by reflexive property.

6. ΔABC ≅ ΔCDA by ASA property of triangle.

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Find the value of "c". 4c + 18 = 74 *​

Answers

[tex]4c \: + 18 = 74[/tex]

[tex] \implies \: 4c = 74 - 18[/tex]

[tex] \implies \: 4c = 56[/tex]

[tex] \implies \: c = \cancel \dfrac{56}{4} [/tex]

[tex] \implies \: c = 14[/tex]

The value of c is 14 .

Answer:

14

Step-by-step explanation:

move all terms that don't contain c then solve.

Read the paragraph. When young people are encouraged to take risks, they build confidence in their own decision-making skills and capabilities. Consider Winston, a ninth grader willing to try out for a varsity sport or a competitive performance band. He risks failure and personal embarrassment, but he learns the tryout process. He may also learn his personal strengths and shortcomings. Whether he is met with success or not, the risk-taking experience fosters self-reflection and growth. What central idea is explicitly stated in the paragraph? Young students should compete in varsity athletics. Students learn about themselves by taking risks. Students benefit from high-level competition. Young students are nervous during tryouts.

Answers

Answer:

B

Step-by-step explanation:

Based on the definition of a central Idea, the central Idea stated explicitly in the paragraph is that students learn about themselves by taking risks.

What is the central Idea in the paragraph?

The central Idea of a paragraph is the main theme or topic which the reader is expected to learn or remember.

According to the paragraph, when young people are encouraged to take risks, it helps them build self-confidence.

Even though the results of taking such risks may not be successful, the young person gets to know more about his strengths and weaknesses.

Therefore, the central Idea stated explicitly in the paragraph is that students learn about themselves by taking risks.

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find y when x=4, if y=7 when x=14

Answers

Answer: y = 2 when x = 4

i looked for a correlation in the given problem, and i realized that "y" will equal half of whatever "x" equals. so when x = 4, y = 2.

At 4:00 AM, the temperature is 12 F. If the temperature drops 3 F per hour, what will the temperature be at 6:00 AM?

Answers

Answer:

6F

Step-by-step explanation:

it is 6 f because at 4:00 a.m. it is 12 f and it drops 3 per hour and I know that 4:00 a.m. to 6:00 a.m. is 2 hours and 2 times 3 is 6 and 6 minus 12 is 6

Is (1, 4) a solution to this system of equations? 3x + y = 7
3x + 3y = 15
A. N o, (1, 4) is not a solution.
B. Yes, (1, 4) is a solution.

Answers

B. Yes, (1,4) is a solution

A rectangle has sides of 3 cm and 5 cm. A similar
rectangle is dilated by a scale factor of 2. Find its
dimensions.
06 cm by 10 cm
01.5 cm by 2.5 cm
O2 cm by 3 cm
O2 cm by 2.5 cm

Answers

Answer: 6cm by 10cm

Step-by-step explanation: Any scale factor greater than one will increase the size or area of the shape. since 2 is greater than one multiply to find the new dimensions

At 4:00 AM, the temperature is – 12 ·F. If the temperature drops 3 °F per hour, what will the temperature be at 6:00 AM?

Answers

Answer:

-18

Step-by-step explanation:

Answer:

6 degrees F

Step-by-step explanation:Since it was at 12 and it was 4 am.Going down 3 degrees by the hour and it six do 12-3-3.

Carl is having a party. He has bought 24 brownies and is making 6 more batches of brownies. The inequality below can be used to determine how many brownies, b, must be in each batch so that all 138 guests get at least 1 brownie. Determine which of the given values, if any, make the inequality true: b=10, b=15, b=20 *

Answers

Answer:

b = 20

Step-by-step explanation:

The computation is shown below

Given that

24+ 6b > 138

where

b = 10

b = 15

b = 20

So if we take b = 10

= 24 + 6(10)

= 24 + 60

= 84

B = 15

= 24 + 6(15)

= 24 + 90

= 114

B = 20

= 24 + 6 (20)

= 24 + 120

= 144

So if we take b = 20 the inequality would be true

I'm having trouble with this problem ​

Answers

Answer:

the first and third should be the correct answer I hope this helps

A salesperson earns a commission of a certain percentage on the original price of any items he helps you buy. The salesperson helped you select a new jacket that was originally 90$. He eared 5.76$ commission on this sale. What percentage of the original jacket price did the salesperson earn

Answers

Answer:

5.18%

Step-by-step explanation:

5.76 x 100 = 576

576 ÷ 100 = 5.184

5.184 = 5.18%

Solve the proportion: x/42 = 3/7

Answers

Answer: x=18

Step-by-step explanation:

Step 1: Cross-multiply.

Step 2: Divide both sides by 7.

Determine whether the paired values represent a proportional relationship.
(-2,-4).(-1, - 2).(1, 2).(2, 4)

Answers

Answer:

(-1,-2) is the correct one but they all are the same

A restaurant bill before tax is $15.50. How much is a 15% tip for this bill? Be sure to round your answer to the nearest hundredth.

Answers

Answer: 17.82

Step-by-step explanation:

1.15 x 15.50 = 17.825

17.825 rounded to the nearest hundreth is 17.82

Please help me with this geometry problem, tysm

Answers

9514 1404 393

Answer:

x = 6∠NBS = 68°

Step-by-step explanation:

The sum of the two adjacent angles is equal to the angle that includes both.

  ∠NBS +∠SBR = ∠NBR . . . . . angle sum theorem

  (12x -4) +42 = (17x +8)

  30 = 5x . . . . . . . . . . . . . . subtract 12x+8

  6 = x . . . . . . . . divide by 5

__

Then the measure of ∠NBS is ...

  ∠NBS = 12x -4 = 12·6 -4

  ∠NBS = 68 . . . . degrees

The relationship “3 students out of 5 students" is an example of

Answers

Answer:

3/5

Step-by-step explanation:

It is an example of 3/5ths of a students

The relationship “3 students out of 5 students” is an example of a Fraction.

What is a fraction?

A fraction is a part of a whole number, and a way to split up a number into equal parts.

Given a statement, 3 students out of 5 students;

This can be written as 3/5 which describes a fraction.

Hence, The given relationship is an example of fraction.

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A box contains 1 3/4 cups ponds of pancake mix. Jada used 7/8. What fraction of the pancake mix in the bow did she use?

Answers

She used half of the mixture
1 3/4 - 7/8= 7/8

how do you put this into a decimal equivalent

8 4/9=

Answers

Answer:

8.44444444444

Step-by-step explanation:

hope this helped

Answer:

8.44!!

Step-by-step explanation:

hope this helps!!

Love: Deku <3

Please please help me I really need help please

Answers

Answer:

s = 25y + 85

Step-by-step explanation:

Answer:

s = 25y + 85

Step-by-step explanation:

Initial number = 85Yearly added = 25Number of years = yTotal = s

The relationship is:

s = 25y + 85

compare between x=ab+1 and y=a+b

Answers

Answer:

[tex]y = a + b \\ a = y - b = = = > (i) \\ x = ab + 1 \\ x = (y - b)b + 1 \\ x = yb - {b}^{2} + 1 \\ yb = x + {b}^{2} - 1 \\ y = \frac{1}{b} (x + {b}^{2} - 1)[/tex]

Answer:

ab=x-1

a=y-b

x-1=(y-b)b

X-1/y-b=b

In ΔDEF, e = 49 cm, d = 73 cm and ∠D=52°. Find all possible values of ∠E, to the nearest degree.

Answers

Answer: 32

Step-by-step explanation:

The sum of two numbers is 58. If there difference is 28, find both numbers

Answers

Answer:

y = 15

x = 43

Step-by-step explanation:

this is giving us a system of equations because we know two things:

x + y = 58

x - y = 28

take the second equation and format it where you have simplified it for one variable:

x = 28 + y

(we did this by adding y to both sides)

now substitute this new value of x into the first equation:

28 + y + y = 58

simplify this to get 2y = 30

divide both sides by 2: y = 15

now substitute your new value of y into the second equation:

x = 28 + 15

x = 43

which expression has value of 15 when = 12?


[tex] \frac{18}{p} \: \: \: \: \: \: \: \: [/tex]
or

3p

or

18-p

or

p+3

someone please help me im failing math ​

Answers

Answer:

I think its 3p not sure but u can try that

please help me !!! :))))

Answers

Answer:

12.4 in

Step-by-step explanation:

I whish i can help :)

Answer:

13.6

Step-by-step explanation:

We can use the pythagorean therom since we know the 2 side leanths and solve for the longest side of the triangle which is the rectangle cut diagonally

11^2+8^2=c^2

121+64=c^2

185=c^2

√185= √c^2

13.6=c

Hope that  helps !

Sara was making a cookies and she needs ½ cup of Chocolate chips and 2/3 cup of sugar. She accidently put in 1 cup of sugar. How many cups chocolate chips does she need now?

Answers

Answer:

3/4 cups of Chocolate chips is needed

Step-by-step explanation:

Sara was making a cookies and she needs ½ cup of Chocolate chips and 2/3 cup of sugar. She accidently put in 1 cup of sugar. How many cups chocolate chips does she need now?

From the above question:

2/3 cup of sugar = ½ cup of Chocolate chips

1 cup of sugar = x

Cross Multiply

2/3 cup of sugar × x = ½ cup of Chocolate chips × 1 cup of sugar

x = ½ cup of Chocolate chips × 1 cup of sugar/ 2/3 cup of sugar

x = 1/2 ÷ 2/3

x = 1/2 × 3/2

x = 3/4 cups of Chocolate chips

Therefore, for 1 cup of sugar , 3/4 cups of Chocolate chips is needed

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