show work on how to do the question

Answer:

Given that Elena is currently e years  old and Katie is k years old. Now, nine years ago, Katie was twice as old as Elena was.

So, k - 9 = 2(e - 9)

⇒ k - 2e + 9 = 0 .............. (1)

And, in four years, Elena will be as old as Katie is now.

So, k = e + 4

⇒ k - e - 4 = 0 ............... (2)

Therefore, the equations (1) and (2) matches the conditions. (Answer)

Answer: 2001

Step-by-step explanation:

Dropped from 35 to about 17.5.

Answer:

9.6

Step-by-step explanation:

This is a four side figure which is most likely to be a trapezium.So AD is the hypotenuse,AB is side (a),BC is the height and CD is side (b).

The equation for the Volume of a Sphere is:

V = [tex]\frac{4}{3}[/tex]πr²

You have been given the radius of 4.5 cm, so all you have to do is plug this information into the equation and solve!

V = [tex]\frac{4}{3}[/tex]π(4.5)²

       ↓

V = [tex]\frac{4}{3}[/tex]π × 20.25 or  V= [tex]\frac{4}{3}[/tex] × 20.25π

       ↓

V= 27π (plug this into your calculator to get your numerical value)

V≈ 84.82

Answer:

-0.5

Step-by-step explanation:

Could I get a Brainliest?

Answer:

74

Step-by-step explanation:

13 x 5 is 65. 65 + 9 is 74.

Answer:

74 Hours

Step-by-step explanation:

Knowing that Teresa worked for 13 hours each day for 5 days meaning

13 * 5 = 65.

Also known that the next day she working 9 hours.

Thus, 65 + 9 = 74

Hence, Teresa work 74 hour in all.

~lenvy~

Answer:

1) 0.392

2) 0.395

3) 0.397

4) 0.393846294629468261456382648477982195862

Step-by-step explanation:

It is asking for 3 numbers greater than 0.39, with three in the tenth place (0.x000) that is less than 1. By adding a number in the thousandth place to 0.39, we automatically make it larger. Adding more digits will make it slightly larger, as long as it isn't a 0. All 4 answers I have provided are correct, however, I would just use the first 3 for your question.

Hope this helps! Have a great day!

Answer:

X = 55°

Step-by-step explanation:

You can tell if a pair of angles, in this case, is 90° if you see the red box in the corner of the angle.

The pair of angles in the picture are complementary angles, which add up to 90°. Therefore, subtract 35 from 90 to find the value of X which is 55°.

Hope this helped! <3

Answer:

16.2 = [tex]\frac{81}{5}[/tex] and 121 = [tex]\frac{121}{1}[/tex]

Step-by-step explanation:

16.2 can be simplified to its fraction form, which is [tex]\frac{81}{5}[/tex]

121 is already simplified since it is a whole number, but its fraction form would be [tex]\frac{121}{1}[/tex]

-----

(I hope this helped & good luck! <3)

i know you need help urgen for this but this is just for a challenge i have to answer 5 questions by the end of today! im sorry if i got your hopes down on getting and answer but good luck!

0The volume of fishtank A is 200 cubic feet, and the volume of fishtank B is 160 cubic feet. So fishtank A has a greater volume than Fishtank B.

Answer:

Radius= 8.99 mm (9 mm)

Step-by-step explanation:

We use the formula for the volume of a cone which is

1/3 pi ×(radius)^2 *height

932.58 = (pi) × (11) ×(r^2/3)

Radius^2 = (932.58×3) / (11pi)

= 80.96m

Radius= 8.99mm

Answer:

volume= 1/3πr²h

932.58=1/3×3.14×r²×11

3×932.58=34.54×r² ×3

3

2,797.74 = 34.54×r²

34.54. 34.54

√r²= √81

r=9mm

Answer:

Greater than for both i believe

Step-by-step explanation:

Answer:Yea both a greater than because if you do 2 x 5/2 it = 5 and 5 is a hole number 5/2 is not and 2 is a hole number but 5 is greater than 2.

Step-by-step explanation:

Answer:

[tex]4^{2}[/tex]

Step-by-step explanation:

so when you multiply two numbers with the same constant, and different exponents, just add the exponents!

so it is 5 - 3 = 2

so its [tex]4^{2}[/tex]

Answer:

A) 4²

Step-by-step explanation:

[tex](4^5)(4^{-3})\\\\4(^{5-3})\\\\4^2\\\\16[/tex]

Hope this helps!

Answer:

The answer is option C. 3

Step-by-step explanation:

Answer:

-4

Step-by-step explanation:

vertical opposite angles are equal

110=x+114

=-4+114

Answer:

-4 the answer is -4

Answer:

(5x^(2)-10x+1)/((x+2)(x-2))

Answer:

Raj is working on a craft that requires ribbon. He measures and records the lengths of the ribbon pieces he has. This line plot shows his results.

How much longer is one of the longest pieces of ribbon than one of the shortest pieces of ribbon?

1 in.

78 in.

34 in.

12 in.

Step-by-step explanation:

34 in ANSWER

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Answer: 3/4

Step-by-step explanation:

Answer:

7 9/14

Step-by-step explanation:

im 90% sure this is right

Answer:

The answer is 7  9/4

Step-by-step explanation:

Answer:

70 is the anwer I got I am so sorry if that was wrong but it should be right

Let's see

[tex]\\ \rm\rightarrowtail 1/9/3[/tex]

[tex]\\ \rm\rightarrowtail 1/9(1/3)[/tex]

[tex]\\ \rm\rightarrowtail 1/9(3)[/tex]

[tex]\\ \rm\rightarrowtail 1/27[/tex]

Answer:

d 1/27

Step-by-step explanation:

Using the flip and multiply method:

      [tex]\sf \dfrac{1}{\dfrac{9}{3}}[/tex]

[tex]\sf \implies \dfrac19 \div 3[/tex]

[tex]\sf \implies \dfrac19 \div \dfrac31[/tex]

[tex]\sf \implies \dfrac19 \times \dfrac13[/tex]

[tex]\sf \implies \dfrac{1 \times 1}{9 \times 3}[/tex]

[tex]\sf \implies \dfrac{1}{27}[/tex]

Answer:

86.7

Step-by-step explanation:

L x W = 5.1 x 5.1 = 26.01
B x H ÷ 2 = 5.1 x 5.95÷2 = 15.1725
15.1725 x 4 = 60.69
60.69 + 26.01 = 86.7

The surface area of the  square pyramid is 92 square centimeters.

The given figure is a square pyramid.

We have to find the surface area.

Surface area = a² + 2a√(a²/4 + h²)

a is 5.1 cm and h is height which is 5.95 cm.

Surface area = 5.1² + 2(5.1)√(5.1²/4 + 5.95²)

=26.01 + 10.2 √(26.01 /4 +35.4025)

=26.01+10.2 √6.5025+35.4025

=26.01+10.2√41.905

=92 square centimeters.

To learn more on Three dimensional figure click:

https://brainly.com/question/2400003

#SPJ6

Hi!

[tex]\\ \sf\longrightarrow \dfrac{x}{7}\geqslant -6[/tex]

[tex]\\ \sf\longrightarrow x\geqslant -6(7)[/tex]

[tex]\\ \sf\longrightarrow x\geqslant -42[/tex]

Solution set in interval notation

[tex]\\ \sf\longrightarrow x\in[-42,\infty)[/tex]

Answer:

A.

Step-by-step explanation:

A fence is needed for the circular field.

Circumference is basically perimeter but for circles.

Knowing this information, we can use the formula for circumference.

C = [tex]\pi[/tex]d

C = (3.14)(50)

C = 157

hope it helps :)

x = 5 makes 2x≤ 10 true but not 2x < 10 because "≤" means less than or equal to, which means 2x would be the same as 10, so 10 ÷ 2 = 5, x = 5.

Answer:

Step-by-step explanation:

2x ≤ 10, when x = 5

2(5) ≤ 10

10 ≤ 10 (10 is less than OR equal to 10)

2x < 10, when x = 5

2(5) < 10

10 < 10 (10 is less than 10) - that is false

x = 5 does not makes 2x < 10 true because 10 can't be less than 10.

Hope this helps!