8 batteries cost $20 how much does 1 batterie cost

Answers

Answer 1

Answer: 2.5

Step-by-step explanation:

20/8=2.5

Answer 2

Answer:

do 20/8

Step-by-step explanation:

1 battery costs $2.50


Related Questions

Find the equation of the line passing through the given points, (1,5) and (2, 7). Which
formula should you use first?

Answers

slope formula (y2-y1)/(x2-x1)

(7-5)/(2-1) slope is 2

then plug in a coordinate point into the equation

y=2x+b

7=2(2)+b

b=3

therefore the equation is

y=2x+3

The mean number of people per day visiting an art show in July was 120. If 30 more people each day visited the museum in August, what was the mean number of people per day visiting in August?

A. 620
B. 150
C. 650
D. 120

Answers

I think it’s B I am not sure if it’s wrong sorry :(

Answer:

150

Step-by-step explanation:

Helpp plzzz I will mark brainliestttt

Answers

294cm^2
49 x 6 (sides)

Answer:

294

Step-by-step explanation:

We are given the area of 1 face of a cube. The area is 49. Now if their are 6 faces in a cube, and all faces of a cube are the same, then we multiply 49*6 = 294.

P.S. I don't understand the boxes thing but I have the answer :)

write the equation of the line parallel to the given line p (2,-3) y=-6x+10

Answers

Answer:

Step-by-step explanation:

y+3 = -6(x-2)

Please help it doesn’t make sense to me lol

Answers

I would say b but not sure delete the first person they just waistin time

What value of w that makes the equation true 2/3(w+3) = 7

Answers

The answer is 7.5 or 15/2

Your friend deposits $8,000 in an investment account that earns 2% annual interest. Find the balance after 10 years when the interest is compounded monthly.

Answers

Answer:

$9,769.60

Step-by-step explanation:

A = 8000[1 + (.02/12)]^12·10

f(x) = 10x2 + 8, evaluate f(-3).

Answers

Answer:

98

Step-by-step explanation:

f(x) = 10x² + 8

= 10(-3)² + 8

= 10 (9) + 8

= 90 + 8

= 98

What is the SURFACE AREA of this 3-D figure?"
5 m
4 m
4 m
52 meters cubed
48 meters squared
56 meters squared
O 70 meters cubed
Please hwlp

Answers

Answer:

Is 5m

Step-by-step explanation:

Im smart yes sirr

At the Rubber Duckie booth at the County Fair, contestants randomly pick two rubber ducks, one from each of two separate pools. Each pool contains five ducks, numbered 1 through 5. To win a prize, the numbers on both ducks must match. The table shows the possible outcomes. What is the theoretical probability that a contestant wins the Rubber Duckie game?

Answers

1. There are 10 ducks in total, 5 in each pool.

2. For each pool, the probability of picking a certain numbered duck—for instance, #3—is 20%.

3. Because the pools are separate with, picking one duck from one pool does not affect the chance of picking a certain duck from the other pool.

4. Therefore, the probability that a contestant wins the game is 20%.

Good luck!

Answer:

listen to other guy

Step-by-step explanation:

i need points sorry

Plsss help it also detects if it’s right or wrong

Answers

Answer:

3/8

Step-by-step explanation:

Looking at the bottom row, there are 8 possible outcomes

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT

There are 3 that have exactly 2 heads HHT, HTH, THH,

That means the probability is

P( exactly 2 heads) = number outcomes with exactly 2 heads/total outcomes

                                 =3/8


What is the value of the expression 25 ÷ 5 + (6 x 2) − 4?
Question 1 options:

7

9

12

13

Answers

Answer:

13

Step-by-step explanation:

25 / 5 + 12 - 4 = 5 + 12 - 4 = 17 - 4 = 13

4 1/4 - 5/6 giving ur answer as a Mixed Number

Answers

Answer:

3.41666666667 or 341666666667/100000000000 Sorry if this isn't a mixed number, I remember doing it on a calculator and it simplified it to a mixed number and it didn't but hope this helps

Step-by-step explanation:

The solution of the expression will be 3⁵/₁₂.

What is an expression?

Expression in maths is defined as the relation of numbers variables and functions by using mathematical signs like addition, subtraction, multiplication and division.

Given that the expression is 4¹/₄ - 5/6. The expression will be simplified as below,

E = 4¹/₄ - 5/6

First, simplify the mixed fraction part,

E = (17 / 4) - (5 / 6)

Solve the above equation by taking an LCM,

E = ( 102 - 20 ) / 24

E = 41 / 12

E = 3⁵/₁₂

Therefore, the expression after simplification will give the value 3⁵/₁₂.

To know more about an expression follow

https://brainly.com/question/19008874

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Which number is not a perfect square?
44
25
49
289​

Answers

Answer:

44 is not an perfect square

Answer:

44 is not a perfect square

Step-by-step explanation:

plz mark brainlyest if I am right

Find the GCF of 6 and 21

A. 126
B. 21
C. 3
D. None of the above

Answers

Answer:

C. 3

Step-by-step explanation:

[tex]6 = 2 \times 3 \\ \\ 21 = 3 \times 7 \\ \\ \because \: common \: factor = 3 \\ \\ \therefore \: gcf \: of \: 6 \: and \: 21 = 3[/tex]

Answer:

C. 3

Step-by-step explanation:

Prime Factorization of 6:  2 × 3

Prime Factorization of 21:  3 × 7

Common Factors of 6 and 21: 3

So the greatest common factor of 6 and 21 is 3, that is, GCF of 6 and 21 is 3.

Simplify.
7x² - x + 9
+ 6x² + 5x - 10
___________

Will give brainliest

Answers

Answer:

13x^2+4x-1

Step-by-step explanation:

13x^2 +4x-1


Because I used Photomath

AD is the perpendicular bisector of BC. BD = 5x - 10 and DC = 3x + 10. Determine the value of x.

Answers

Answer: x= 10

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

x=10

If the discriminant equals 23, how many solutions will the quadratic equation have?

A) no real solution
B) 1 real solution
C) 2 real solutions (either rational or irrational)

Answers

your answer is 2 solutions; they are irrational.
Your answer is C, and it would be irrational.

what is the angle of r ​

Answers

Answer:

m∡R = 30.51°

Step-by-step explanation:

sin(R) = 33/65

arcsin(R) = 30.51

can somebody please answer 5, 6 and 8? And please explain how you got those answers​

Answers

Answer:

5.root730 6.root329 8.root39

Step-by-step explanation:

use pythagoras law because its right angled triangle

hypautnse=root(side^2+side^2)

SORRY I DONT KNOW HOW TO TYPE ROOT SIGN ON HERE

Answer:

5. - 27.02

6. - 18.14

8. - 6.24

Step-by-step explanation:

Hello There!

Because each triangle is a right triangle we can solve for the missing side length using the Pythagorean Theorem

The Pythagorean theorem states that the sum of the two legs squared is equal to the hypotenuse squared

[tex]a^2+b^2=c^2[/tex]

For number 5 we are given two legs so all we have to do is plug in the values

[tex]17^2+21^2=c^2[/tex]

now we solve for c

[tex]17^2=289\\21^2=441\\441+289=730\\c^2=730\\\sqrt{c^2} =c\\\sqrt{730} =27.01851217[/tex]

we're left with c = 27.01851217

are final step is to round to the nearest hundredth

So we can conclude that the missing side length is equal to 27.02

For number 6 we are given the hypotenuse and a leg

So this time we use this equation

[tex]a^2=c^2-b^2[/tex]

where a^2 = missing leg

now we plug in the values and solve for a

[tex]a^2=27^2-20^2\\27^2=729\\20^2=400\\729=329\\a^2=329\\\sqrt{a^2} =a\\\sqrt{329} =18.13835715[/tex]

we're left with a = 18.13835715

our final step is to round to the nearest hundredth

So we can conclude that missing side length is equal to 18.14

For number 8 we are given the hypotenuse and a leg

so once again we use this equation:

[tex]b^2=c^2-a^2[/tex]

now we plug in the values and solve for x

[tex]b^2=8^2-5^2\\8^2=64\\5^2=25\\64-25=39\\b^2=39\\\sqrt{b^2} =b\\\sqrt{39} =6.244997998[/tex]

we're left with b = 6.244997998

our final step is to round to the nearest hundredth

so we can conclude that the missing side length is equal to 6.24

Valley Mills Sports Center has a total of 318 footballs and basketballs. There are 76 more footballs for sale than basketballs.
How many footballs are for sale?
A. 121
B. 176
C. 197
D. 242

Answers

Let x represent number of basketball
Let x + 76 represent number of footballs.

x + (x + 76) = 318
x + x + 76 = 318
2x + 76 = 318
2x = 242
x = 121

Since we know the number of basketballs we can use the expression above to get the number of footballs

x + 76
= 121 + 76
= 197

Therefore there are 197 footballs.

Hope this helps!! :)

The number of footballs that are for sales when its known that there are total 318 footballs and basketballs and there are 76 more footballs for sale than basketballs, is given by: Option C: 197

How to form mathematical expression from the given description?

You can represent the unknown amounts by the use of variables. Follow whatever the description is and convert it one by one mathematically. For example if it is asked to increase some item by 4 , then you can add 4 in that item to increase it by 4. If something is for example, doubled, then you can multiply that thing by 2 and so on methods can be used to convert description to mathematical expressions.

Given that:

Total number of basketballs and footballs in the considered sports center = 318 (assuming they're for sales, as rest of the question is talking about footballs and basketballs being for sales)Number of footballs = 76 + Number of basketballs

Assume that:

Number of footballs = xNumber of basketballs  = y

Then we get two equations, as:

[tex]x+y = 318\\x = 76 + y[/tex]

Substituting the variable x in first equation by the expression obtained in second equation for x, we get:

[tex]x + y = 318\\(76 + y) + y = 318\\76 + 2y = 318\\\text{Subtracting 76 from both the sides}\\\\2y = 318 - 76 = 242\\\\\\2y = 242\\\\\text{Dividing both the sides by 2}\\\\y = \dfrac{242}{2} = 121[/tex]

Thus, we got: Number of basketballs  = y = 121

Using this result and the first equation, we get:

[tex]x + 121 = 318\\x = 318 - 121 = 197[/tex] = number of footballs.

Thus, the number of footballs that are for sales when its known that there are total 318 footballs and basketballs and there are 76 more footballs for sale than basketballs, is given by: Option C: 197

Learn more about forming equations here:

https://brainly.com/question/11938672

Learn more about system of linear equations here:

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try box be
1) Solve for m: 2m + 21 = 3
Help please…

Answers

first step is to subtract 21 from both sides

2m+21-21=3-21

2m=-18

2m/2 and -18/2

m=-9

So the final answer is m=-9 (negative nine equals m)

Use the given information to write the equation of a line.
slope = -2 and passes through through (1,1)

Answers

Answer:

y = -2x - 1

Step-by-step explanation:

If you already know the slope. Just find out the y-intercept. Plug the coordinates into the equation.

y = mx + b

y = -2x + b

1 = -2(1) + b

1 = -2 + b

-1 = b

Mrs. People purchased Sandwiches at 2 for $6.00 and Donuts for $2.00 a package. She spent $19 for a total of 7 items. How many sandwiches and donuts did she buy?

Answers

Answer:

2. 1. 3. 3 6 . b. Classify the system, and tell how many solutions it has. 6. ... She spent the entire amount on songs, ... number of music videos Mariana bought. 7. A chemist needs to mix a 2% acid solution and a ... sandwich spread. ... Use the given matrices for Items 13–20. A ... person sold and the amount of money collected.

Step-by-step explanation:

PLSSSSSSSSS HELPP ILL MARK BRAINLIEST

Answers

Answer:

47

Step-by-step explanation:

A recent increase in sales of microchips has forced a computer company to buy a new processing machine to help keep up with demand. The builders of the new machine claim that it produces fewer defective microchips than the older machine. From a random sample of 90 microchips produced on the old machine, 5 were found to be defective. From a random sample of 83 microchips produced on the new machine, 3 were found to be defective. The quality control manager wants to construct a confidence interval to estimate the difference between the proportion of defective microchips from the older machine and the proportion of defective microchips from the new machine.

Answers

The final question is;

Why is it not appropriate to calculate a two-sample z-interval for a difference in proportions?

Answer:

The normality of the sampling distribution of the difference in sample proportions cannot be established.

Step-by-step explanation:

To use the two-sample z-interval for a difference in proportions, some conditions must be met which help us to know the normality of the distribution.

The conditions are;

- The method of sampling for each population must be simple random sampling.

- The samples must be independent.

- Each sample must include at least 10 successes and 10 failures.

- Each population must be a minimum 20 times its sample.

In this case, we are not given the population size and as such we cannot ascertain the last condition I wrote above since the sample proportion we are given alone isn't sufficient. Also, they both don't include at least 10 failures. Thus the normality of the sample proportions cannot be established.

Answer: the normality of the sampling distribution of the difference in sample proportions cannot be established

Step-by-step explanation:


Given: EFGH is a square
Find the length of FH.

Answers

Answer:

B) 3√2

Step-by-step explanation:

FH = √GH²+FG² = √18 = 3√2

Abigail wants to ride her bicycle 30.4 miles this week. She has already ridden 7 miles. If she rides for 3 more days, write and solve an equation which can be used to determine mm, the average number of miles she would have to ride each day to meet her goal.

Answers

(30.4-7)/3..........

JUST ANSWER RIGHT NOTHING ELSE 25 POINTS!!! plEase thank you

Answers

Answer:The heck i aint on that im close though

Step-by-step explanation:

Which inequality has an open circle when it is graphed on a number line?
X>3/5
4/7>_x
X<_12
X_>-6

Answers

Answer: X>3/5

Step-by-step explanation: because it doesent have a line under the greater than sign.   (: i hope that answers that!!

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