Please can someone help me.
1.A model car travels 40 m, measured to one significant figure, at a speed of 2 m/s, measured
to one significant figure. Find the upper and lower bounds of the time taken.​

Answers

Answer 1

Answer:

It has taken 38 minutes to reach 40 at 2m/s

Step-by-step explanation:

40 - 2= 38

and a slow speed 2 m/s that's why it is in minutes


Related Questions

Which equation represents the volume of a cone with the same base and height as the cylinder below?
VA
o cone - FK
O vocane rikk
o Yoone - 3 stk
O cone - 3x7K

Answers

Answer:

Step-by-step explanation:

23

Item 3
Jasmine started swim practice at 11:35 a.m. She finished swim practice at 1:18 p.m.

How long was Jasmine's swim practice?


1 hour 17 minutes

1 hour 43 minutes

2 hours 17 minutes

2 hours 43 minutes

Answers

2 hours 17 and minutes

Answer:

1 hour and 43 min

Step-by-step explanation:

I TOOK THE TEST IN K12

Find the surface area of this cube

Answers

Answer:

512 in^3

Step-by-step explanation:

It would be length x height x width = AREA

8 x 8 x 8= 512 and since its 3d it will be 512^3

Okay so I will not be doing an explanation cause I do them to long so I will just give you the answer 512^2 in.Hope this helps :)

Select THREE expressions equivalent to –81x + 27.

A. –9(9x – 3)


B. –9(–9x – 3)


C. 3(–27x + 9)


D. –3(27x – 9)


E. –3(–27x + 9)

Answers

Answer:

A, C, and D

Step-by-step explanation:

EASY POINTS!! HELP AND ILL MARK YOU BRAINLIEST!!!!

which of the following points is not on the graph y=-1/2x²-3x+7

(1, 3.5)
(9, -60.5)
(-8 -1)
(6, -30)​

Answers

Answer: (6, -30)

Step-by-step explanation:

Substitute the points into the equation:

3.5 = -1/2(1^3) - 3(1) + 7 = 3.5: (1, 3.5) is on the graph.

-60.5 = -1/2 (9^2) -3(9) + 7 = -60.5: (9, -60.5) is on the graph.

-1 = -1/2 (-8^2) -3(-8) + 7 = -1. (-8, -1) is on  the graph.

-30 = -1/2(6^2) -3(6) + 7 = -29 (6, -30) is not on the graoh.

How do you find the distance between points (5,1), (4,0)?

Answers

Write out a graph love. Visuals are super helpful. Mark the points. Then count between them :))

Answer:

To find the hypotenuse, you would use the formula a^2 + B^2 = C^2

That is the formula for the pythagorean theorem.

I suggest you first plot it on a graph, then could the units on the sides that make up the legs.

When you plot it, the legs are both 1 unit.

so it would be, following the formula:

1^2 + 1^2 = c^2

1 x 1 + 1 x 1 = c^2

2 = c^2

Then you square root:

√2 = √c^2

1.41421356 = c

1.41421356 rounded to the nearest tenth is 1.4.

So the length of (5,1), (4,0) is ≈1.4

Create a number line. Plot the following numbers on the number line: 5, -10, 20, -5, 0, 10, -20

Answers

-20,-10,-5,0,5,10,20

Today, everything at a store is on sale. The store offers a 20% discount.

A. The regular price of a T-shirt is $18. What is the discount price?

B. If the regular price of an item is x dollars, what is the discount price in dollars

C. The discount price of a hat is $18. What is the regular price?

(Answer each question please.)

Answers

Answer:

A. 14.4

b. x-20%

c. 23 dollars

Step-by-step explanation:

you have to take away the 20% or multiply the price by 0.2 which is 20%

Simplify the expression and then substitute the given number for the variable. For expression 8a2+6b+9a2+9b2+3b, find the value if a=2,b=−1.

Answers

Answer: 68

Step-by-step explanation:

Simplifying the expression:

= 8a² + 6b + 9a² + 9b² + 3b

Collect like terms

= 8a² + 9a² + 6b + 3b + 9b²

= 17a² + 9b + 9b²

We then substitute a=2,b=−1.

= 17a² + 9b + 9b²

= 17(2)² + 9(-1) + 9(-1)²

= 68 -9 + 9

= 68

My dog, Bentley, is playing in the park and sees a tree 100 m away. Since he is the dog of a mathematics teacher, he knows how to calculate the angle of elevation to the top of the tree and finds it to be about 25°. About how tall is the tree?​

Answers

Answer:

g

Step-by-step explanation:

Answer:

g is the answer trust me all the best

Item 4
Sam biked for 4 minutes 30 seconds.

How many seconds did Sam bike?


34 s

94 s

270 s

300 s

Answers

Answer:

270 s

Step-by-step explanation:

4 minutes = 240s

add the other 30s

boom

Sam biked for 270 s

60 x 4 = 240
240 + 30 = 270 s

HELP ASAP!! HELP FAST PLEASE!!!

Answers

Answer:

(4x^5)^1/3

Step-by-step explanation:

Someone help and plz make sure it’s RIGHT NO FLIES/LINKS/WEBSITES PLZ and will mark brainiest

Answers

Answer:

I'm pretty sure it's 18 degrees

Step-by-step explanation:

PLS PLSSS HURRY I NEED HELP

Answers

Answer:

look at the picture i have sent

Determine the component form of the vector which has a magnitude of 30 & a direction of 116 degrees.

Answers

Given :

Magnitude of vector is 30 units.

Direction of vector from x-axis is 116°.

To Find :

The component form of the vector.

Solution :

We know, vector in component form is given by :

[tex]\vec{v} = (Acos\ \theta) \hat{i} + (Asin\ \theta)\hat{j}[/tex]

Putting given values,

[tex]\vec{v} = (30\times cos\ 116^o) \hat{i} + (30\times sin\ 116^o)\hat{j}\\\\\vec{v} = -13.15 \hat{i} + 0.90 \hat{j}[/tex]

Hence, this is the required solution.

1) One baseball team won 20 games throughout their entire season. Of all their games, this
team won 62.5% of them. Given this, how many games in total did this baseball team play

Answers

Answer: 32 matches

Step-by-step explanation:

Let the games in total that the baseball team played be represented by x.

Based on the information given in the question, we can form an equation as:

62.5% × x = 20

62.5/100 × x = 20

0.625 × x = 20

0.625x = 20

x = 20/0.625

x = 32

The team played a total of 32 matches.

Choose the inequality that represents the following graph.

Answers

Answer:

b is the answer I believe so because it have to be greater than 0

Step-by-step explanation:

I hope it's right and if not my bad

You deposit $2,400 in an account that earns 1.9% annual interest. Find
the balance after 3 years if the interest is compounded monthly.
Remember this is $ so you round to 2 decimal places unless told to do
differently.

Answers

Answer:

$2471.53

Step-by-step explanation:

Use the compound amount formula:

A = P(1 + r/n)^(nt), where n is the number of compoundings per year

Here,

A = ($2,400)(1 + 0.019/12)^(12·3), or

      ($2,400)(1.0015)^36

    =  ($2,400)(1.026) =

     =  $2471.53


Asap please
1) Javier wants to replace the carpet in the two
bedrooms of his home. Bedroom 1: is rectangular
in shape that has a width of 10ft and length of
8.5ft. Bedroom 2: is rectangular in shape that has
a width of 11.75ft and length of 13.25ft. If the
carpet he wants to buy is $2.83 per square foot,
then how much will it cost for both rooms?
a. $85.00
b. $155.69
c. $240.69
d. $681.15

Answers

Answer:

d. $681.15

Step-by-step explanation:

Bedroom 1:

Width = 10 ft

Length = 8.5 ft

Area of bedroom 1 = length × width

= 10 ft × 8.5 ft

= 85 ft²

Bedroom 2:

Width = 11.75 ft

Length = 13.25 ft

Area of bedroom 2 = length × width

= 11.75 ft × 13.25 ft

= 155.6875 ft²

Total carpet in the two bedrooms = 85 ft² + 155.6875 ft²

= 240.6875 ft²

If the

carpet he wants to buy is $2.83 per square foot, then how much will it cost for both rooms?

Total cost for both rooms = Total carpet in the two bedrooms × cost per square foot

= 240.6875 ft² × $2.83

= $681.145625

Approximately $681.15

Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form. 3 , 7 , 11 ,

Answers

Answer: this is an arithmetic sequence and the common difference is equal to -4

Step-by-step explanation:

Solve the Equation to find the value of the variable.
[tex]x + 5 = 100[/tex]

Answers

Answer:

95 plus 5 equal 100

Step-by-step explanation:

PLSS HELP I WILL MAKE BRAIN?

Direct to Coordinates
plot the point A (2, 3) then, plot point b that is 4 right and 5 up from point A.

Plot the point C (9, 7). Then, plot another point D that is 8 left and 2 down from point C.

Answers

Answer: here is a pic

Step-by-step explanation:

Please help!! I need Thai answer soon, will mark brainless

Answers

Answer:

d. 127.41

hope it helps....

What is the domain of the function shown on the graph?

Answers

Answer:

-1 i think

Step-by-step explanation:

Which property is being used here?
5.2345 x 1 = 5.2345

Answers

Answer:

The identity property

Step-by-step explanation:

.......

Find the missing side. Round to
the nearest tenth.
19
40°
[ ?

Answers

Answer:

14.6

Step-by-step explanation:

We solve using the Trigonometric function Cosine

cos θ = Adjacent/Hypotenuse

θ = 40°

Hypotenuse = 19

Adjacent = x

Therefore,

cos 40 = x/19

Cross Multiply

x = cos 40 × 19

x = 14.554844419

Approximately to the nearest tenth,

x = 14.6

A rectangular prism has a volume of 640 cubic centimeters, a height of 5 centimeters,
and a length of 8 centimeters. What is the width of the rectangular prism in centimeters?

Answers

Answer:

10 cm

Step-by-step explanation:

The volume of a rectangular prism is calculated by multiplying the length, width and height together. So, to find one of the dimensions, all we need to do is divide the volume by the given dimensions. In this case we divide the volume, 640, by the height, 5, and length, 8.

The width, or w, is equal to 640 divided by 5 and 8.

w = 640 ÷ 5 ÷8

w = 80 ÷ 8

w = 10

The width is 10 cm.

I hope this helps ^^ Good luck n.n

Find X, AB, BC, and AC if ABC is equilateral.
X =
AB =
BC =
AC = ​

Answers

X=-7
AB=-37
BC=73
AC=-49
I pretty sure


Find the slope of a line that passes through the points
(-9, -3) and (-7, -1)
1
-16
1over2
8

Answers

Answer:

1

Step-by-step explanation:

To approach the runway, a pilot of a small plane must begin at 6 degrees,descent starting from a height of 1905 feet above the ground. To the nearest tenth of a mile, how many miles from the runway is the airplane at the start of this approach

Answers

Answer:

C. 3.5 mi

Step-by-step explanation:

Reference angle = angle of elevation

Angle of elevation = angle of depression = 6° (alternate angle theorem)

Hypotenuse = x

Opposite = 1905 ft

Apply trigonometric function SOH:

Sin 6° = Opp/Hyp

Sin 6° = 1905/x

x * Sin 6° = 1905

x = 1905/Sin 6°

x = 18,224.7 ft

Convert form feet to miles

1 mi = 5,280 ft

Therefore,

18,224.7 = 18,224.7/5,280

= 3.45164773 mi

≈ 3.5 mi (nearest mile)

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