i dont understand this

Answer:

Step-by-step explanation:

14⁻³ · 14¹² = 14⁻³ ⁺ ¹² = 14⁹

Used:

[tex]a^n\cdot a^m=a^{n+m}[/tex]

Answer:

$800 at 3%, $1,200 at 5%

Step-by-step explanation:

[tex].03x - .05(2000 - x) = 84[/tex]

[tex]100 - .02x = 84[/tex]

[tex].02x = 16[/tex]

[tex]x = 800[/tex]

[tex]2000 - x = 1200[/tex]

Answer:

Thats fun try on this one

Step-by-step explanation:

Brainlyist?

Answer:

29.95

Step-by-step explanation:

You need to divide 39.94 by 8 to find the value of each filter and then multiply the cost of one by 6.

$912

Here given:

So, simple interest:

Pays back: $900 + $12 = $912 back.

Answer:

$911.84

Step-by-step explanation:

Formula

[tex]\sf A=P\left(1+\dfrac{rt}{n}\right)[/tex]

where:

Given:

[tex]\implies \sf A=900\left(1+\dfrac{0.08 \times 60}{365}\right)[/tex]

[tex]\implies \sf A= \$911.84\: \textsf{(nearest cent)}[/tex]

Answer:

Step-by-step explanation:

First find the surface area of the clyinder and find the area circles and subtract

Then find the surface area of a cone, remove the circle area and double it.

Clyinder surface area (without circle area) 2πrh+2πr2=2·π·4·6+2·π·42≈251.32741

251.32741 - 50.2 - 50.2

Cone area: A=πr(r+h2+r2)=π·4·(4+32+42)≈113.09734

113.09734 - 50.2 - 50.2

Total: 12.69734 + 150.92741 = 163.62475

Answer:

B. x = 14

Step-by-step explanation:

1. Add 9 to both sides of the equation

x - 9+9 = 5+9

x = 14

hope this helps :)

Answer:

the answer is true

Step-by-step explanation:

any polygon is based on a prism so the answer will always be true no matter what polygon. pls mark me brainliest i need it. hope this helped.

Answer:

Neither: The pattern is (1/2)n^2 + 4.5n

Step-by-step explanation:

You can use quadratic regression to figure it out

The probability that it is British is 0.6164 if the Venn diagram shows the information about a stamp collection. f = 100 stamps in the collection A = stamps in the 20th century B = British stamps A B. X(X - 6) х 2x + 32 28 A stamp is chosen at random.

It is defined as the diagram that shows a logical relation between sets.

The Venn diagram consists of circles to show the logical relation.

We have:

f = 100 stamps in the collection

A = stamps in the 20th century

B = British stamps

We can make a linear equation to solve for x as the total stamps are 100 in the collection.

[tex]\rm x(x-6)+x+2x+32= 100\\\\\rm x^2-6x+x+2x+32 = 100\\\\\rm x^2-3x-68 = 0[/tex]

After solving x = 9.88, or x = -6.88

Probability can't be negative so neglecting the negative ones

x = 9.88

The probability that it is British:

[tex]=\rm \frac{x +2x + 32}{100}[/tex]  

[tex]=\rm \frac{9.88 +2(9.88) + 32}{100}[/tex]

= 61.64/100

= 0.6164

Thus, the probability that it is British is 0.6164 if the Venn diagram shows the information about a stamp collection. f = 100 stamps in the collection A = stamps in the 20th century B = British stamps A B. X(X - 6) х 2x + 32 28 A stamp is chosen at random.

Learn more about the Venn diagram here:

brainly.com/question/1024798

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Answer:

7

Step-by-step explanation:

So, we know that this process happened 3 times in total. The original amount of kids we can call x, so the next wave filled in the gaps inbetween, so we call that amount x-1, the next wave would be (x+x-1)-1 or 2x-2, and the last would be 4x-4

adding this all up we get 8x-7=49, so 8x = 56 or x = 7

If the copy machine prints 175 pages in 5 minutes and the number of pages printed is proportional to the time in minutes , the unit rate is 35 pages per minute.

Division is the process of determining the quotient of a number. It is the process of grouping a number into equal parts using another number.

The unit rate can be determined by dividing 175 by 5

Unit rate = 175/5 = 35 pages per minute.

To learn more about division, please check: https://brainly.com/question/13281206

Answer use div it. Is 35

Step-by-step explanation:

Answer:

I'm sorry but you will have to add a pic

Answer:

x=1 y=2

Step-by-step explanation:

Isolate x for 4x -y=2: X=2+y/4

Substitute x= 2+y/4

(2+y/4 )+3y=7

simplify 2+13y/4=7

Isolate y for 2+13y/4=7

y=2

Forx= 2+y/4

Substitute y = 2

x= 2+2/4

Simplify

X=1

Answer:

50%

Step-by-step explanation:

there are 8 students and 4 are shorter than 65 inches.

So 4 divided by 8 = 0.5 or 50%

Answer:

1. 30

2. 34

Step-by-step explanation:

2(4(3) + 3)

2(12 + 3)

2(15)

= 30

12(3) - 2

36 - 2

= 34

hope this helps :)

Answer:

Step-by-step explanation:

Answer:

4 Chickens, 3 Oxen

Step-by-step explanation:

Given:

Known:

Solution:

Answer:

False

Step-by-step explanation:

There's no such thing like that

Answer:

C.

Since the square root of 20 is around 4.5, we know that ≈4.5 is almost at the half mark between 4 and 5 on the number line.

Answer:

x = -30

Step-by-step explanation:

-24 = 6 + x

we'll subtract 6 to get x alone:

-24 - 6 = x

-30 = x

____________

then to check, we plug it back in

-24 = 6 + (-30)

-24 = -24 true! so -30 is right :)

Answer:

-30

Step-by-step explanation:

You can backtrack to find x:

-24-6=-36

-30+6=-24

Answer:

8.9

Step by Step Explanation:

[tex]x =6 \: { \tan} \: 56 \degree \\ \\ \implies \: x = 8.8953658111\\ \\ \implies \: x \approx 8.9[/tex]

The number which Lucy did not count is A = 11

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the number be represented as A

Now , the value of A is

Substituting the values in the equation , we get

Lucy is counting by 2s, starting with 2, which means that she is counting all even numbers between 2 and 50.

To find the number that Lucy would not count, we need to find the odd number between 2 and 50.

On simplifying the equation , we get

The odd numbers between 2 and 50 are: 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, and 49.

Hence , Lucy would not count the even number that corresponds to the odd number 11

To learn more about equations click :

https://brainly.com/question/19297665

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Answer:

11/12

Step-by-step explanation:

8/12 + 3/12 = 11/12

Answer:

11/12 is the answer

1/4 + 2/3 = 11/12

1.3333l

hope it helps...!!!

Answer:

D

Step-by-step explanation:

6x2 is 12

8x2 is 16

12x2 is 24

the scale factor is x2

Answer:

20%

Step-by-step explanation:

This is a special triangle.

the two bases are always equal, so a is also 12. To get to the hypotenuse, you must multiply either side by rad2.

a= 12

b= 12rad2

comment if you have any more questions