helppppppppppppppppp

Answer:

21000

Step-by-step explanation:

You move the decimal point over that many times as the power of 10.

IT is found that [tex]2.1 \times 10^4[/tex] can be written in standard form as 21,000.

Since Scientific notations have some of the profits are Better readability due to compact representation

The value in terms of power of 10 is known, which helps in easy comparison of quantities differing by a large value.

To convert from scientific notation to standard form, we simply move the decimal point to the right by the number of places indicated by the exponent (4 in this case).

Starting with  [tex]2.1 \times 10^4[/tex] , we move the decimal point four places to the right to get 21,000.

Hence,   [tex]2.1 \times 10^4[/tex] in standard form is 21,000.

Learn more about scientific notation here:

https://brainly.com/question/3112062

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Step-by-step explanation:

from midpoint formula p(x,y)= -2 +(-3)÷2 ,-8+(-12)÷2

=-5÷2 , -20÷2

= -2.5 , -10

Answer:

21

Enzo can only buy 21 kiwis from the store.

Step-by-step explanation:

We have to divide

But since it's going too be hard for me to show you the long division, I'm just going to use a multiplication trick!

Let's find what is 20x0.99 first, because I feel like this CAN be the answer.

20x0.99=19.8

So this is not the answer

Now, let's try 22x0.99

22x0.99=21.78

So this is also not the answer.

Now, let's try 21, I think only this one can be the answer.

21x0.99=20.79

So hence, 21 is the right answer. Enzo can buy 21 Kiwis

Thanks!

~[tex]FieryAnswererGT[/tex]~

Answer:

21

Step-by-step explanation:

Given;

Enzo has $20.79 to spend on fruit.

Each Kiwis cost $0.99

Note;

20.79 ÷ 0.99 = k

or

20.79 ÷ 0.99 = Solution

Solve;

[tex]\mathrm{Multiply\:the\:numerator\:and\:denominator\:by:}\:100[/tex]

[tex]\frac{2079}{99}[/tex]

[tex]\mathrm{Write\:the\:problem\:in\:long\:division\:format}[/tex]

[tex]\begin{matrix}99\overline{|\smallspace2079}\:\:\:\:\:\:\:\:\:\:\:\:\end{matrix}[/tex]

[tex]Divide\;207\;by\;99\;to\;get\;2[/tex]

[tex]\begin{matrix}\:\:\:\:\:\:\:\:\:\:\emptyspace2\:\:\:\:\:\:\:\:\:\:\:\:\:\:\\ 99\overline{|\smallspace2079}\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\underline{\emptyspace1\emptyspace9\emptyspace8}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\:\:\:\:\emptyspace9\emptyspace9\:\:\:\:\:\:\:\:\:\:\:\:\end{matrix}[/tex]

[tex]Divide\;99\;by\;99\;to\;get\;1[/tex]

[tex]\begin{matrix}\:\:\:\:\:\:\:\:\:\:\emptyspace2\emptyspace1\:\:\:\:\:\:\:\:\:\:\:\:\\ 99\overline{|\smallspace2079}\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\underline{\emptyspace1\emptyspace9\emptyspace8}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\:\:\:\:\emptyspace9\emptyspace9\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\:\:\:\:\underline{\emptyspace9\emptyspace9}\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\:\:\:\:\:\:\emptyspace0\:\:\:\:\:\:\:\:\:\:\:\:\end{matrix}[/tex]

[RevyBreeze]

Answer:

[tex]M = (3,5.5)[/tex]

Step-by-step explanation:

Given

[tex]A = (-1,8)[/tex]

[tex]B = (7,3)[/tex]

Required

Determine the midpoint

This is calculated as thus

[tex]M = (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]

Where:

[tex](x_1,y_1) = (-1,8)[/tex]

[tex](x_2,y_2) = (7,3)[/tex]

So, we have:

[tex]M = (\frac{-1+7}{2},\frac{8+3}{2})[/tex]

[tex]M = (\frac{6}{2},\frac{11}{2})[/tex]

[tex]M = (3,5.5)[/tex]

Hence;

The midpoint is (3,5.5)

Answer:

(0,0.5)

Step-by-step explanation:

Trust me I got it right on Khan

Answer: home / math / distance calculator

Distance Calculator

The calculators below can be used to find the distance between two points on a 2D plane or 3D space. They can also be used to find the distance between two pairs of latitude and longitude, or two chosen points on a map.

2D Distance Calculator

Use this calculator to find the distance between two points on a 2D coordinate plane.

Result

Distance: 7.8102496759067

Steps:

Distance (d) = √

Step-by-step explanation:

Complete question :

Alexandra and Chi compete in an​ Olympic-type triathlon consisting of a 1.5 km ​swim, a 40 km bicycle​ ride, and a 10 km run. There are two transitions in the race where the participants take time to change from one mode of the race to another. Their times from the race are shown. Complete questions 1dash4 below.

How long does it take Alexandra to complete the triathlon. Write a linear equation to model total time t in hours.

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

SWIM:

Alexandra __5km/hr

Chi _______ 6km/hr

Transition 1:

Alexandra __ 4 minutes

Chi _______ 5 minutes

CYCLE:

Alexandra __15km/hr

Chi _______ 15km/hr

Transition 2:

Alexandra __ 3 minutes

Chi _______ 5 minutes

RUN:

Alexandra __6km/hr

Chi _______ 7.5km/hr

Distances:

swim distance = 1.5km

bicycle​ ride distance = 40km

run distance = 10km

Time taken by Alexandra :

time = distance / speed

Swim time = 1.5km / 5km/hr = 0.3 hr

Transition 1 = 4/60 = 0.067 hr

Cycle time = 40km / 15km/hr = 2.67 hours

Transition 2 = 3/60 = 0.05 hr

Run time = 10 / 6km/hr = 1.67 hrs

Total time(t) in hours taken by Alexandra :

(0.3 + 0.067 + 2.67 + 0.05 + 1.67) hrs = 4.757 hours

Time taken by Chi :

time = distance / speed

Swim time = 1.5km / 6km/hr = 0.25 hr

Transition 1 = 5/60 = 0.083 hr

Cycle time = 40km / 15km/hr = 2.67 hours

Transition 2 = 5/60 = 0.083 hr

Run time = 10 / 7.5km/hr = 1.33 hrs

Total time(t) in hours taken by Chi

(0.25 + 0.083 + 2.67 + 0.083 + 1.33) hrs = 4.757 hours = 4.416 hours

Answer:

<5 ~= <1 - Corresponding Angles Theorem

<1 ~= <7 - Alternate Exterior Angles Theorem

<5 ~= <7 - Vertical Angles Theorem

line I || line m - Transitive Property

Answer:

Im not sure what you want it to be rounded but heres the answers:

Whole number: 98

Tenths: 98.5

Hundredths: 98.49

Thousandths: 98.489

Step-by-step explanation:

Answer:

y=-1

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-1-(-1))/(-5-0)

m=(-1+1)/-5

m=0/-5

m=0

y-y1=m(x-x1)

y-(-1)=0(x-0)

y+1=0

y=0-1

y=-1

Answer:

x=134

Step-by-step explanation:

As angles in a triangle add up to 180 degrees

also angles on a straight line add up to 180

so 180-(64+70)=46

and 180-46=134

PLEASE GIVE BRAINLIEST AND THANKS

Answer: proportional

Step-by-step explanation: it is proportional because you can multiply any number by 7

Answer:

44 and 46

Step-by-step explanation:

A complementary angle is 90 degrees

90/2 = 45

If 45 + 45 = 90

44 + 2 = 46
44 + 46 = 90

:)

Answer:

the value of 532×13=6,916

Answer:

25

2.5

how many hours

I hope this helps

Answer:

lie on goes

Step-by-step explanation:

answer is Lie On For First And Goes For Second

Answer:

[tex]\\[/tex]

Step-by-step explanation:

Let,

[tex]\\[/tex]

To find the perimeter of the traingele with vertices of A (1,4), B(1, -2) and C(-3,-2). We have to first find the distance between each pair of points, which will give length of the sides.

[tex]\\[/tex]

Using distance formula,

[tex]\\[/tex]

[tex] \dashrightarrow \sf \: \: AB = \sqrt{( x_{2} - x_{1})^2 + (y_{2} - y_{1})^2} \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \: AB = \sqrt{{ {(1 - 1)}^{2} } + {( - 2 - 4)}^{2} } \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \: AB = \sqrt{0 + {( - 6)}^{2} } \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \: AB = \sqrt{36} \\ \\ [/tex]

[tex]\pink{ \dashrightarrow\sf \: \: {\underline{AB = 6 }}}\\ \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \: BC = \sqrt{{ {( - 3 - 1)}^{2} } + {( - 2 + 2)}^{2} } \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \:BC = \sqrt{ {( - 4)}^{2} + 0} \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \:BC = \sqrt{16} \\ \\ [/tex]

[tex] \pink{ \dashrightarrow \sf \: \:{ \underline{ BC = 4 }}}\\ \\ \\ [/tex]

[tex]{\dashrightarrow { \sf \: \: {AC = \sqrt{{ {( - 3 - 1)}^{2} } + {(2 - 4)}^{2}}}} } \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \:AC = \sqrt{ {( - 4)}^{2} + {( - 2)}^{2} } \\ \\ [/tex]

[tex] \dashrightarrow\sf \: \: AC = \sqrt{16 + 4} \\ \\ [/tex]

[tex] \dashrightarrow \sf \: \:AC = \sqrt{20} \\ \\ [/tex]

[tex] \pink{ \dashrightarrow \sf \: \: { \underline{AC = 2 \sqrt{5} }}}[/tex]

[tex]\\[/tex]

Now,

[tex]\\[/tex]

[tex] \dashrightarrow\sf \: \: Perimeter = AB + BC + AC \\ \\ [/tex]

[tex] \dashrightarrow\sf \: \: 6 + 4 + 2√5 \\ \\ [/tex]

[tex] \dashrightarrow\sf \: \: {\pink{ \underline{ \boxed { \pmb{ \sf{ \: 10 + 2√5 \: \: }}}}}}[/tex]

[tex]\\[/tex]

Hence,

Answer:

28.25in

Step-by-step explanation:

i think it should be -1.6

if you add 7 to 9 it'll be 16.

if you divide -10 by 16 it'll give you -16/10.

simplify it and you should get -8/5 or -1.6.

Answer: 2.19 pounds

Step-by-step explanation:

35 / 16 is 2.1875, if you round that you get 2.19

An example for #5 is y=-8x+2, and an answer for 6. is y=6x+9. The formula is y=mx+b so the b is the y-int/y and the m is the slope/x. The x is the variable(the one beside the m).

The full form of HA is Hypotenuse-angle and it states that if the hypotenuse and an acute angle of one right triangle are congruent to the hypotenuse and an acute angle of another right triangle, then the two triangles are congruent.

[tex]\red{ \rule{35pt}{2pt}} \orange{ \rule{35pt}{2pt}} \color{yellow}{ \rule{35pt} {2pt}} \green{ \rule{35pt} {2pt}} \blue{ \rule{35pt} {2pt}} \purple{ \rule{35pt} {2pt}}[/tex]

Hence, Proved.

Answer:

HA

Step-by-step explanation:

Usually HA congruence is used in right angle triangles .as One common 90° right angle is present if Hypotenuse and adjacent angle remains similar the triangles are similar.

Answer:

sorry its a little hard to answer your thing

Step-by-step explanation:

need ponits

Answer:

Step-by-step explanation:

" ... at most 5 " ⇒ 5 is max value

[tex]\frac{x}{3}[/tex] ≤ 5

Work Shown:

(f - g)(x) = ( f(x) ) - ( g(x) )

(f - g)(x) = ( -3x^2 ) - ( -5x+3 )

(f - g)(x) = ( -3x^2 ) - ( -5x) - ( 3 )

(f - g)(x) = -3x^2 + 5x - 3

the area of the surface of this design is 31 in long

Answer:

392 inches²

Step-by-step explanation:

10 inches × 6 inches = 60 inches²

60 inches² × 2 = 120 inches²

----------------------------------------------------------------------------------------------------------

(6 inches + 4 inches) × 6 inches = 10 inches × 6 inches = 60 inches²

60 inches² × 2 = 120 inches²

----------------------------------------------------------------------------------------------------------

(10 inches × 6 inches) + (4 inches × 4 inches) = 60 inches² + 16 inches² = 76 inches²

76 inches² × 2 = 152 inches²

----------------------------------------------------------------------------------------------------------

Add them all together ~

120 inches² + 120 inches² + 152 inches² = 392 inches²

Answer:

=> 100

Step-by-step explanation:

=> 3(9+6)+55

=> 3(15)+55

=> 45 +55

=> 100

The distance from the person to the base of the cliff is 269.78 meters.

The height of the building from the base of the cliff is 829.37 meters

The situation forms right angle triangle.

The building is constructed on top the cliff that is 300 meters high.

Right angle triangle has one of its sides as 90 degrees. Therefore, the sides can be found using trigonometric ratios.

The height of the building from the cliff is 300m. let's find the hypotenuse side of the angle of elevation formed to the cliff.

Using sin rule,

300 / sin (72 - 63) = y / sin (180 - 162)

300 / sin 9 = y / sin 18

300 sin 18 = y sin 9

y = 300 sin 18 / sin 9

y = 92.7050983125 / 0.156

y = 594.230769231

Therefore, how far the person to the base of the cliff can be calculated as follows;

cos 63 = adjacent / hypotenuse

cos 63 = x / 594.2307

x = 594.2307 cos 63

x = 269.775092454

x = 269.78 meters

Therefore, the distance from the person to the base of the cliff is 269.78 meters.

height of the cliff  / 269.78 = tan 63

height of cliff = 269.78 tan 63

height of cliff = 529.37493165

height of cliff = 529.37

The height of the building = 300 + 529.37 = 829.37493165 = 829.37 meters

learn more on right triangle here: https://brainly.com/question/14806301

Answer:

1

Step-by-step explanation:

30

-29

-----

1

the answer is one

Answer:

the answer is 1

Step-by-step explanation:

39

-29

——

01

The perimeter of the trapezoid is 9 + √2 + √5 units. then the correct option is D.

Coordinate geometry is the study of geometry using the points in space. Using this, it is possible to find the distance between the points, the dividing line is m:n ratio, finding the mid-point of the line, etc.

The points are J(-7, 4), K(-4, 4), L(-2, 3), and M(-8, 3).

We know that distance between two points will be given as

[tex]\rm D= \sqrt{(x_2 - x_1 )^2 + (y_2 - y_1)^2}[/tex]

The distance between JK will be

[tex]JK = \sqrt{(-4+7)^2 + (0)^2 } = 3[/tex]

The distance between KL will be

[tex]KL = \sqrt{(-2+4)^2 + (3-4)^2 } = \sqrt5[/tex]

The distance between LM will be

[tex]LM = \sqrt{(-8+2)^2 + (0)^2 } = 6[/tex]

The distance between JK will be

[tex]MJ = \sqrt{(-7+8)^2 + (4-3)^2 } = \sqrt2[/tex]

Then the perimeter will be

Perimeter = JK + KL + LM + MJ

Perimeter = 3 + √5 + 6 + √2

Perimeter = 9 + √2 + √5

More about the coordinate geometry link is given below.

https://brainly.com/question/1601567

Answer:

the correct answer would be D

Step-by-step explanation: