Mathematics High School

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

Calculate the following interest : 15% of $70 for 7 years

Answers

After investing for 7 years at 15% interest, your $70 investment will have grown to $186.20

explanation:
You can calculate Interest on your loans and investments by using the following formula for calculating simple interest: Simple Interest= P x R x T ÷ 100, where P = Principal, R = Rate of Interest and T = Time Period of the Loan/Deposit in years.

Deanna knows that the floor in her kitchen is a square with an area of 169 ft2. The perimeter of her kitchen floor is found by adding the lengths of all its sides. What is the perimeter of her kitchen floor? Explain how you found your answer.

Answers

Answer:

52 ft

Step-by-step explanation:

area of a square is l x w. all sides are equal so the l = w

A = 169 ft^2 so each side is the square root of 169 which is 13 ft

perimeter of the floor would be all four sides added or length of 1 side multiplied by 4 since they are all equal

Perimeter = 13ft × 4 = 52 ft

so:

Answer:

52m

Step-by-step explanation:

Area of the square floor = 169 m²

For a square with each side 's' , area will be s². Similarly , for a square with area 'a' , length of each side will be √a.

So,

Length of each side of floor = √169 = 13m

For a square with each side 's' , its perimeter will be 4s.

Hence ,

Perimeter of the kitchen = 13 × 4 = 52m

PLEASE HELP ME BRAINLY I WILL GIVE BRAINLEST PLEASEEEEE GUYS

Answers

Answer:

1.=4x+8

2.=6x+8x

3.=8x+12

4.=6x+6y+6z

Step-by-step explanation:

Answer:

This is my other account.

Step-by-step explanation:

Select the graph for the solution of the open sentence. Click until the correct graph appears.

|x| = -2

Answers

Answer:

No solution (2nd graph)

Step-by-step explanation:

The absolute value of any number can't be negative, so there is no solution to this problem.

Answer:

second one (no solution)

Step-by-step explanation:

The difference of two numbers is 18. Their sum is 66. What are the numbers? List the numbers from least to greatest.

Answers


attack_panic
·
5y
Another solution is to solve one equation for one variable, and plug that into the other equation.

x + y = 66
x = 66 - y

(66 - y) - y = 18
66 - 2y = 18
-2y = 18 - 66
-2y = -42
-2y/-2 = -42/-2
y = 24

Now that you have y, plug that into the first equation and solve for x.

x + 24 = 66
x = 66 - 24
x = 42

Then plug your two answers into both original equations to verify.

x + y = 66
42 + 24 = 66
66 = 66 check

x - y = 18
42 - 24 = 18
18 = 18 check

What is the slope of the line passing through the points (1, -5) and (4, 1)?

A. 2

B. -4/5

C. 5/4

D. -2

Answers

Answer:

5/4

Step-by-step explanation:

m = y2-y2 / x2-x3

20
-
-47 > -4
-4; because
4. is to the right of – 4;
True
False

Answers

On a number line towards the right are the positives. If I am understanding that question correctly 4 is on the right of -4 is true

Y'all someone pls help me :(

Answers

Answer:

Yes, the table does show a function. First, just by seeing that the y values are the same, this means that this is a perfectly horizontal line. Horizontal lines are functions, but vertical lines aren't. I suppose the ordered pairs are just (-2,5), (0,5), and (3,5)

Solve the equation.
2x + 3 = 5
X=?

Answers

Answer:

Step-by-step explanation:

2x + 3 = 5

2x = 5 -3

2x = 2

x = 1  

:)

PLEASE HELP

Write a simplified expression that represents the perimeter of the rectangle.

Answers

P=[2(2x)]+[2(4x+3)]

Answer:

P = 12x+6 is the answer

Step-by-step explanation:

P = 2(4x+3+2x)

= 2(6x+3)

= 12x+6

Which of the following fraction is the smallest?

12/14
13/19
17/21
7/8

Answers

Answer:

13/19

Step-by-step explanation:

12/14 = 0.86

13/19 = 0.68

17/21 = 0.81

7/8 = 0.88

13/19 is smallest

Answer:

A.  (8, 7), B (19, −12), C (−21, 14)

Step-by-step explanation:

You swap the X and Y coordinate for reflections over y=x

please answer the following question

Answers

B, x>5 Because the graph is shaded right from 5 meaning x is greater than 5. It is an open dot meaning 5 is not included so we have to use > not ≥

The following expression has been simplified one step at a time. Match each step with the property used to get to that step. (Note: The column that lists the algebraic expressions is already in the correct order.)

1. (3 + 6x) - 5x
2. 3 + (6x - 5x)
3. 3 + (6 - 5) x
4. 3 + (1) x
5. 3 + x

a. multiplicative identity
b. distributive
c. associative
d. subtraction
e. commutative

Answers

D is the answer madam or sir

Round the problem to estimate the quotient: 135,296 divided by 16

Answers

Answer: 8,437

Step-by-step explanation:

Hope this helps bro. Good day mate!

-x - 163 = 12x + 84

Answers

Answer:

X = -19

Step-by-step explanation:

Add x to both sides to get rid of -x

-163 = 13x + 84

subtract 84 from both sides

-247 = 13x

divide by 13

x = -19

X= - 19 always look for that variable

c2-1/4=0 equation maths ​

Answers

Answer:

c=1/8

Step-by-step explanation:

2c-1/4=0

2c=1/4

2c/2=1/4/2

c=1/4x1/2

c=1/8

Can someone please help me thanks

Answers

Answer:

C and D

Step-by-step explanation:

A, B and E are equations because they have an equal sign

C and D are inequalities because they have one of these symbols:

<, >, ≤, ≥

A cyclist travels 15 km from home to the park.
She leaves home at 14:05 and arrives at the park at 14:50.
What is her average speed in km/h?

Answers

Answer:

20km/h

Step-by-step explanation:

use the speed distance time formula

it takes 45mins to get to the park which is 0.75 of an hour

20/0.75 = 20km/h

(b³)⁷ × (b⁴)⁵ plz tell me the answer step by step

Answers

Answer:

[tex] {b}^{41} [/tex]

Step-by-step explanation:

1. Use power rule.

[tex] {b}^{21} ( {b}^{4} ) {}^{5} [/tex]

2. Use the power of rule again.

[tex] {b}^{21} {b}^{20} [/tex]

3. Use product rule.

[tex] {b}^{21} + 20[/tex]

4. simplify.

[tex] {b}^{41} [/tex]

Therefor, the answer is

[tex] {b}^{41} [/tex]

HELP!! GEOMETRY!! WILL MARK BRAINLIEST!!! NEED WORK SHOWN IF POSSIBLE

Answers

Answer:

Step-by-step explanation:

1/4 | m
2/3
write an equation to represent the image

Answers

9514 1404 393

Answer:

  1/4 + m = 2/3

Step-by-step explanation:

The image shows bars of length 1/4 and m together have the same length as a bar that is 2/3. As an equation, this is ...

  1/4 + m = 2/3

i need help with this​

Answers

Answer:

Left space down:         Right space down:

1                                     3

3                                    9

5                                    15

25                                 75

30                                 90

35                                 105

Solve the system of equations.
- 5y + 87 = -18
5y + 2x = 58
X=
Y=

Answers

Answer:

Sorry, I tried.

Hope this helps.

Step-by-step explanation:

The chosen topic is not meant for use with this type of problem. Try the examples below.

6x2+3y2=126x2+3y2=12 , x+y=2x+y=2

x+2y=4x+2y=4 , x−y=−3x-y=-3

x2−y=2x2-y=2 , 2x−y=−12x-y=-1

Y:
-5y + 87 = -18
-5y = -18 - 87
-5y = -180
y = -180 / -5
y = +36

X:
( 5 x 36 ) + 2x = 58

180 + 2x = 58

2x = 58 - 180

2x = -122

x = -122 / 2

x = -61

According to my knowledge

Help me please thank you

Answers

The answer is B= 8-D

-3+15mx=q

Solve for m

Answers

Answer:

m = q+3/15x

step-by-step explanations:

Write and solve a proportion to answer the question.

What number a is 25% of 78?

=25100
Question 2
a=

Answers

Answer:

[tex]a = 25\% \: of \: 78 \\ a = \frac{25}{100} \times 78 \\ a = \frac{1}{4} \times 78 \\ \boxed{a = 19.5}[/tex]

a=19.5 is the right answer.

Answer:

19.5 :)

Step-by-step explanation:


Find two integers whose sum is -6 and product is 8


Answers

Answer:

-4 and -2

Step-by-step explanation:

Sum = - 6

[tex] - 4 + ( - 2) \\ - 4 - 2 = - 6[/tex]

The product = 8

[tex]( - 4) \times ( - 2) = 8[/tex]

Remind that negative multiply negative equal positive.

( 4x2 - 13x – 5) = (x - 2)

Answers

Answer:

5/14

Or

0.35714

Answer:

x  =  3.70256241

Step-by-step explanation:

what is the domain and range of
(-2,5) (0,3) (2,2) (-4,0) (2,-3)​

Answers

Answer:

Domain- -4,-2,0,2 Range- -3,0,2,3,5

Step-by-step explanation:

(x,y)

The domain is the x

The range is the y

And if the number is there more than once you only have to list it once.

Typically you list them from least to greatest so the smallest number the higher number.

i need help with this too please

Answers

He/she has the Correct answer
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