Find the first four terms of the sequence given by the following.
an= 9(2)^-1,
n=1, 2, 3...

Answer:

200÷0.4= the amount then times by 2

Step-by-step explanation:

i believe thats how that works

A newspaper and magazine cost 220 together the newspaper cost 140 less than the magazine, then the cost of magazine is 180 and the cost of newspaper is 40.

Two or more expressions with an Equal sign is called as Equation.

Given,

A newspaper and magazine cost 220

the newspaper cost is 140  less than the magazine

Let x be the cost of magazine

x-140 is the cost of newspaper

x+x-140=220

2x-140=220

Add 140 on both the sides

2x=220+140

2x=360

Divide both sides by 2

x=180

and x-140=180-140=40

Hence, the cost of magazine is 180 and the cost of newspaper is 40.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ5

Answer:

The first one is the first picture.

The second answer is zero.

I don't know how 2 do the 3rd sry

Step-by-step explanation:

Answer:

im sry but i need halppppp with this

Step-by-step explanation:

Answer:

1) 189.25 square inches

2) 21 square feet

Step-by-step explanation:

1) In order to find the area of a semicircle, you use  (πr^2)/2. When you plug in 3.14 as pi and 5 as your radius, you'll get 39.25. The area of the rectangle is base x height which is 10 x 15/150. 150 + 39.25 = 189.25

2) If you draw a vertical line that is parallel to the 2 feet measure, you'll have two rectangles with areas (5x3) and (3x2). 15 + 6 = 21

Answer:

x

x

are the same

Step-by-step explanation:

when you plug in g(x) into f(x)

f(x)=16((1/4)(x)^.5)==x

then vice versa

g(x)=(1/4)((16x^2)^.5)==x

They are the same and, therefore, inverses of each other.

Answer:

it is 2.6 that is the answer

Answer:

I don't know

Step-by-step explanation:

I don't really know but if you want help with math questions try this website called wolfram alpha. It's great

Answer:

$82

Step-by-step explanation:

make 25% into a decimal which equals .25, then do 328. x .25 which equals $82

Answer:

the total of straw are going to be 9 and there will be a 1/9 chances of getting the short straw. while each friend picks a straw the probability of getting a short straw is going to be higher because the amount of straws are going to be lessened.

Answer: Final Answer  

x=15,x=−15

Step-by-step explanation:

yes, i can solve it.

x = 15

☆o(^▽^)o☆

Ta-Da

9514 1404 393

Answer:

  3

Step-by-step explanation:

The ratio is ...

  f(x+1)/f(x) = (10·3^(x+1))/(10·3^x) = 3^(x+1-x) = 3^1 = 3

The common ratio is 3.

_____

As you may have noticed, it is the base of the exponential term.

Answer:

It's actually B

Step-by-step explanation:

The measures of the sides are x , x , and x√2 . In a 45°−45°−90° triangle, the length of the hypotenuse is √2 times the length of a leg. To see why this is so, note that by the Converse of the Pythagorean Theorem , these values make the triangle a right triangle.

So x = 4 in this example and the side measures would be 4, 4, and 4√2 which is B

Answer:D

Step-by-step explanation:

Answer: 50 hours

Step-by-step explanation:

Given

The volume of a swimming pool is [tex]25,000[/tex] gallon

It takes 30 minutes to fill [tex]250\ \text{gallons}[/tex]

Using Unitary method

[tex]\Rightarrow 250\ \text{gallon takes}\rightarrow 30\ \text{minutes}\\\Rightarrow 1\ \text{gallon takes}\rightarrow \dfrac{30}{250}\\\\\Rightarrow 25,000\ \text{gallon}\rightarrow \dfrac{30}{250}\times 25,000=3000\ \text{minutes or 50 hours}[/tex]

False.

Hope This Helps You!

Good Luck Studying ^-^

Answer:

False

Step-by-step explanation:

Answer:

$ 50

Step-by-step explanation:

sp = mp - discount percent of mp

or, 42 = mp - 16/100 * mp

or, 42 = 84 mp / 100

so, mp = 50

Answer:

100 - 84

50 - 42

original price=$50

Step-by-step explanation:

A pair of opposite rays are two rays that have the same endpoint and extend in opposite directions. Rays are always named with two points and the first point in the name must be the endpoint. So, when you name opposite rays, the first letter in the name of both rays must be the same.

Step-by-step explanation:

c a

Answer:

180cm^3

Step-by-step explanation:

Given data

Height b=15 cm

Base a= 6cm

The expression for the volume of a pyramid is

V=a^2h/3

Substitute

V= 6^2*15/3

V= 36*5

V=180cm^3

Hence the volume is  180cm^3

Answer:

m<Y = 68°

Step-by-step explanation:

A tangent drawn to a circle makes a 90° angle with the radius that intersects it at the point of tangency. That means that m<X = 90°.

The sum of the measures of the angles of a triangle is 180°.

m<X + m<Y + m<Z = 180

90 + m<Y + 22 = 180

m<Y + 112 = 180

m<Y = 180 - 112

m<Y = 68

I think ur answer B.) srry if wrong .

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Answer:

Persuming your asking for volume, 600 ft³

Step-by-step explanation:

If your asking for volume, just multiply all of them

Answer:

$3

Step-by-step explanation:

$2 = 12oz

$1 = 12oz ÷ 2

= 6oz

18oz ÷ 6oz = 3

3×1$ = 3$

Answer:

50/100 x X = 1.5

x 100       x100

50x = 150

÷50   ÷50

X = 3

X = 3 liters I am pretty sure

Answer:

Step-by-step explanation:

x^2 - 3x - 2 + 2x - 1

x^2 - x - 3

answer is C