Mathematics College

The Johnson family income is
estimated to be $125,000 per year. Mary wanted to write this number
in scientific notation. If she wrote
1.25 x 10" , what value of n should
she use?

Answers

Answer 1

Answer:

The value of n would be 5

Step-by-step explanation:

This is understanding how to take numbers and writing them in scientific notation.

125,000 = 1.25 x 10⁵

First of all.

125,000 = 125,000.0  (See that decimal point?)

We want that decimal point behind the number 1 as seen in the scientific notation. All you have to do is move that decimal point to the left until you reach the ones place.

125000.  → 1.25

(You're not finished yet)

Since we moved the decimal five times, then we must put an exponential value of 5 above the 10

In conclusion:

125,000 = 1.25 x 10⁵

Related Questions


Evaluate f(x) = 1/4x
for x = -5.

A. 20
B. -1/20
C. -1 1/4
D. -4/5

Answers

Answer:

C. -1 1/4

Step-by-step explanation:

First, we substitute -5 for x.

[tex]f(-5)=\frac{1}{4} *-5[/tex]

Then, we evaluate.

[tex]f(-5)=\frac{1}{4} *-5=\frac{-5}{4} =-1\frac{1}{4}[/tex]

Change each percent to a decimal or a mixed decimal
43%
2 1/2%
13.6%
521%

Answers

43/100 = 0.43

21/2/100 = 0.105

13.6/100 = 0.136

521/100 = 5.21

What do the zero exponent and negative exponent properties mean.

Answers

Answer:

Negative exponents put the exponentiated term in the denominator of a fraction and zero exponents just make the term equal to one.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Primero, cualquier número elevado a la potencia cero es uno. Segundo, los exponentes negativos indican una disposición. Si un exponente es negativo, necesita moverse de donde está al numerador o denominador. Investigaremos esta propiedad más adelante en el Conjunto de Problemas.

A piece of wire is 25 cm and has a weight of 10 grams. Another piece of the same wire is 30 cm long. Calculate the weight of the 30 cm piece of wire. working out please

Answers

Answer:

75 grams

Step-by-step explanation:

If 25 cm = 10 grams

Then 1 cm = 25/10

1 cm = 2.5 grams

To find 30 cm = 2.5 times 30 grams

30 cm = 75 grams

2.) state the equation for y

Answers

Answer:

y = 2^(x - 4)

Step-by-step explanation:

f(g(x)) = f(x - 4) = 2^(x - 4)

A group of friends go to the haunted museum
together. Each person pays $6.50 to get in. They
spend a total of $21 for the zombie exhibit. The
total cost is $60. Write an equation and then solve to
find how many people went to the haunted museum.

Answers

Equation: 6.50x + 21 = 60
Answer: x = 6

HHHHHHEEEEEELLLLLLPPPPPP!!!!!!

Answers

Answer:

Undefined

Step-by-step explanation:

if the line is like this __________________ then the slope is zero

If the line is vertical like up and down then the line is undefined.

Hope this helped!!!

Answer:

It is undefined slope so it would be x=3

Step-by-step explanation:

Mohammed wrote down all the money coming in and out for the month. Select all the expenses

Answers

What are the answer choices

It cost $5000 to feed
100 guest at a wedding. It
cost $2750 to feed 45
guests. What is the cost
per plate?

Answers

Answer:

Okays so for 100 guests we can make the equation $5000 ÷ 100 = $50.00

For 100 guests at the wedding it would cost $50.00 per plate

For 45 guests we can make the equation $2750 ÷ 45 = $61.111111111111, it would be a repeating decimal

For 45 guests at the wedding, it would cost $61.111111111111

I hope that this can help you! ^‿^

anyone wanna bang? ​

Answers

Answer:

me

Step-by-step explanation:

Answer:

Yes pls

Step-by-step explanation:

im thirsty my guy

what are the x and y intercept for the inequality 2x + 4y < -8

Answers

D i’m pretty sure!!!

Find the value of MN if AB = 9 cm, BC = 7.2 cm, and LM = 12 cm.
ABCD - LMNO

Answers

Answer:

9.6 cm

Step-by-step explanation:

Since the shapes are similar, we can write a proportion. Let x be the length of MN.

9/12 = 7.2/x Write a proportion.

9x = 12(7.2) Use cross products.

9x = 86.4 Multiply.

x = 9.6 Divide both sides by 9.

Side MN is 9.6 cm.

Solve for q.

q/3 −1
= 3


q =

Answers

Answer:

q = 12

I hope this helps!

2) Which key word is a real life example of a positive integer?

Withdrawal

Above sea level

loss

decreased

Answers

Answer:

above sea level

Step-by-step explanation:

as anything bellow sea level would be negative meters and if you go up the number gets larger.

Above sea level anything that is above 0 is a positive integer

52.45 x 4.78 \
What is the value of the expression?

Answers

i think the answer is 250.711

Answer:

250.711

Step-by-step explanation:

You just multiply my dude.

if a football player gains 40 yards on a play, but the next play he loses 10 yards. how many total yards does he have?

Answers

Answer:

30 yards

Step-by-step explanation:

40 - 10 =30

The correct answer is 30 yards

Can you please help me?

Answers

Answer:

f(2) = 0.5(2) +3.4f(3.5) = 0.5(3.5) +3.4f(15) = 0.5(15) +3.4f(21.3) = 0.5(21.3) +3.4

Step-by-step explanation:

Put the given weight where x is in the function definition. You're only asked for the expression, not its value.

f(2) = 0.5(2) +3.4f(3.5) = 0.5(3.5) +3.4f(15) = 0.5(15) +3.4f(21.3) = 0.5(21.3) +3.4

A shoe store has 23 pairs off white tennis shoes out of 90 pairs of shoes. Estimate the percent of white tennis shoes.

Answers

Answer:

percent=25.56%

Step-by-step explanation:

Percentages

To know the percentage of having n elements out of a total of m elements, we calculate the ratio n/m and express the result as a percentage.

The shoe store has 23 pairs of white shoes out of 90 total pairs of shoes. The percent of white tennis shoes is calculated as follows:

[tex]\displaystyle percent= \frac{23}{90}*100\%[/tex]

Operating:

percent=25.56%

Are the following fractions proportional?? .4/.8 and .71/.4

Answers

Answer:

yes they are

Step-by-step explanation:

see nobody answers correctly:)

HELP PLEASE WILL GIVE BRAINLIEST

Answers

Answer:
$1.21

Explanation:
What we know:
- $5.88=3 pounds of apples
- price went up by $0.75 per pound

First, we divide $5.88 by 3 to find out how much one pound of apples cost.

5.88/3
=1.96

Therefore, the new price of apples per pound is $1.96.

Because the old price of apples per pound was $0.75 cheaper, we subtract 0.75 from 1.96.

1.96-0.75
=1.21

Therefore, the old price of apples per pound was $1.21.

I hope this helps! Please comment if you have any questions.
$1.21 hope this helps

Find the value of the expression below
8(15-4)/4^2-5

Answers

Reduce the expression, if possible, by cancelling the common factors.

Answer:
8

Answer:

8 IS YOUR ANSWER

Step-by-step explanation:

HAVE A GREAT DAY

2x2 forma exponencial

Answers

4 or (2)^2 that’s what I think it’s asking but the question should be more clear

Which equation is equivalent to 2x+3y=12

Answers

some possible equations equivalent to 2x+3y=12 would be:

1)

y=−2x+12/3

written form:

y= negative 2x plus 12 over/divided by 3

2)

y=−2/3x+4

written form:

y= negative 2 over/divided by 3x plus 4

3)

y=4−2/3x

written form:

y= 4 minus 2 over/divided by 3x

4)

y=12−2x/3

written form:

y= 12 minus 2x over/divided by 3

those are all i could think of! Hope this helped :)

If its too complicated comment and ill try to simplify it. remember ITS NEVER WRONG TO ASK QUESTIONS!!!

The equivalent expression for the equation 2x + 3y = 12 are:

x = 6 - 3y/2

y = 4 - 2x/3

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

We have,

2x + 3y = 12

We need to find an equivalent expression for this equation.

We can have many forms:

Case 1.

2x + 3y = 12

Subtracting 3y on both sides.

2x + 3y - 3y = 12 - 3y

2x = 12 - 3y

Dividing 2 into both sides.

x = 12/2 - 3y/2

x = 6 - 3y/2

Case 2.

2x + 3y = 12

Subtracting 2x on both sides.

2x + 3y - 2x = 12 - 2x

3y = 12 - 2x

Dividing 3 into both sides.

y = 12/3 - 2x/3

y = 4 - 2x/3

Thus the equivalent expression for the equation 2x + 3y = 12 are:

x = 6 - 3y/2

y = 4 - 2x/3

Learn more about equations here:

https://brainly.com/question/10188283

#SPJ5

Cassie has a small cube-shaped box. Its volume is 64 cubic centimeters.
What is the area of one face of the box? Enter your answer in the box.
PLZ HELP DUE IN 5 MINUTES

Answers

Answer:  one face is 16 square inches

Step-by-step explanation:

[tex]\sqrt[3]{64} = 4[/tex]  side length

4 × 4 = 16  the area of one face

please help meeee T^T

Solve 14 -3x= 23

Answers

Answer: x = 3

Step-by-step explanation:

First you minus 23 by 14 then you get 9. Then you divide it by 3

what's the answer? please help

Answers

Answer:

the slope is -7/3

Step-by-step explanation:

8-15/10-7

-7/3

Mitchell’s dog is 1/3 the age of Kayla’s cat . The sum of their ages is 12 years. How old is Mitchell’s dog?

Answers

Answer:

Mithcells dog is 3

Step-by-step explanation:

if its one third then you divide by 4 and get 3.

checking your answer

if mitchells dog is 3 and kaylas cat is three times that it would be 9

9+3=12

sorry if this is wrong :)

3. Factor the expression. (1 point)
-X2+3x+40
O-(x+2)(x-20)
O-(x-5)(x+8)
O (x-4)(x-10)
O-(x+5)(x-8)

Answers

Answer:

[tex] - (x + 5)(x - 8)[/tex]

Can you please help me?

Answers

Answer: 325

Step-by-step explanation:

All your doing is multiplying

Answer:

The answer is 325

Step-by-step explanation:

the problem directly tells me that c(x)= 50x is how many words i can type in x minutes. then proceeds to ask me how many words i can type in 6.5 minutes.

in this case, x=6.5.

substitute and solve!

c(6.5)= 50(6.5)

c(6.5)= 325

according to this function, i can type 325 words in 6.5 minutes.

hope this helps!!

how much is 2x4x6x8=?

Answers

Answer:

384

Step-by-step explanation:

Answer:

your answer will be 384

Step-by-step explanation:

2x4x6x8=384

Other Questions
2/3 divided by 4/5 qwertyuioppasdfghjklzxcvbnm What is the acceleration of a 50kg object pushed with a force of 500 newtons? Which of the following is the same as 2,088 feet per minute Kari wants to measure the height of a tree. She walks exactly 90 feet away from the base of the tree and looks up to the top of it. The angle from the ground to the top of the tree is 32 degrees. This particular tree grows at an angle of 85 degrees with respect to the ground rather than vertically. How tall is the tree to the nearest tenth of a foot? Enter a number answer only. 80 times what equals 44?? log(8)log(8) plz reply quickly Specialty t-shirts are being sold online for $15 each,plus a one-time handling fee of $2.25. The total costis a function of the number of t-shirts bought. Whatfunction rule models the cost of the shirts S(t)?What is the cost of 10 shirts? solving equations of different solution types The water depth in a lake decreases at a rate of 2 inches per day because of evaporation. How much does the water depth change in 8 days? In 15 days? In 8 days, the water depth changes by inches. In 15 days, the water depth changes by inches. Suppose J is between H and K. Use the Segment Addition Postulate to solve for x. Then find the length of each segment. If HJ=x+10 JK=9x KH=14x58 a) Draw a sketch of the segments described above b) Write an equaation using the segment addition postulate that will help you solve the problem ___+ ___= c) combine like terms ( x terms on one side of the equal sign and numbers in the other side of the equal sign) ____ = ____ d) x= __ HJ= __ JK= __ HK= __ Help please i will give brainiest What is 1.000000000+1.000000000 Read this passage. What do the descriptions, actions, and quotations tell you about the subject? How do I solve this equation? -6=b/18 and v-15-=-27 1) Consider the dissolution of CaCO3 compound in aqueous medium.a) Write down the equation of the chemical reaction that represents this dissolution.b) Write the expression of the equilibrium constant for this reaction.c) Explain how the addition of a certain amount of sodium carbonate towater would affect this balance2) The equilibrium constant for the reaction 2 SO2(g) + O2(g) 2 SO3(g) has a Kc value = 2.5x10^10 to 500 K. Find the kc value for each of the following reactions at the same temperature (a) SO2(g) +1/2 O2 SO3(g). (b) SO3(g) SO2(g)+1/2 O2(g)(c) 3SO3(g)+ 3/2 O2(g) 3SO3(g) 3) A reaction mixture consisting of 0.400 mol H 2 and 1.60 mol I 2 was prepared in a 3.00 L flask and heated. In balance, 60.0% of the hydrogen gas reacted. What is the equilibrium constant for the reaction H 2(g) + I 2(g) 2 HI(g) at this temperature? Aliyah's Bikes rents bikes for $10 plus $5 per hour. Shayna paid $45 to rent a bike. For how many hours did she rent the book? Having integrity means you can ask for help when you need it. you know when to say no or yes. your actions line up with your values.your values are not realistic or ideal. what are the answers? The function y = 4x represents the distance in miles, y, a horse runs in x hours.What does the average rate of change over the interval [5, 7] mean?A. The average speed of the horse in hours per mile between hours 5 and 7.B. The average speed of the horse in miles per hour between hours 5 and 7.C. The total time the horse travels in hours between hours 5 and 7.D. The total distance the horse travels in miles between hours 5 and 7. Write a linear equation that is parallel to the line 3x2y=14 and passes through the point (6,11) in slope-intercept form.