please help ill give brainliest

Answer:

x/3.5h = -$1.4

So, x = -$1.4 * 3.5h

= -$4.9

Step-by-step explanation:

Since your losing $1.4 every hour, the 1.4 is supposed to negative.

Also, since your losing that amount of money for 3.5 hours, we are trying to find the total of how much money is lost in the 3.5 hours. To do this, we have to do x/3.5h = -$1.4. But since you can't do x/3.5, we have to do inverse operation. When you divide 3.5 hours to the other side of the equation it becomes multiplication. So you do -$1.4 times 3.5 hours

and get  -$4.9.

Answer:

28.

Step-by-step explanation:

28 is the correct answer using the mathematical format given by the percentage supplying us with the variable then by 50 the answer would be 28.

Answer:360 m/s

Step-by-step explanation:

The best prediction of the speed of sound when the air temperature is 45°C is 360 m/s option third is correct also the graph shows a positive correlation.

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

As we can see in the graph:

When the air temperature is 10°C the speed of sound is around 337m/s

When the air temperature is 20°C the speed of sound is around 344m/s

When the air temperature is 30°C the speed of sound is around 348m/s

When the air temperature is 40°C the speed of sound is around 355m/s

From the above observation, the air temperature increases the speed of the sound increases.

So when the air temperature reaches 45°C the speed of the sound will be 360 m/s.

Thus, the best prediction of the speed of sound when the air temperature is 45°C is 360 m/s.

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Answer:

6, -4

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

With each hour you rent the paddleboard the price goes up.

Time= independent variable

Cost= Dependent variable

Answer:

1/4

Step-by-step explanation:

Answer:

2700 cubic meters

Step-by-step explanation:

18*9*10=1620m

24*9*5=1080m

1620+1080=2700[tex]m^{2}[/tex]

Answer: 9 essay questions

Step-by-step explanation:

The test has 26 questions

The test is worth 123 points

The test has two types of questions:

Multiple choice worth 3 points each

Essays worth 8 points each

Let the number of multiple choice questions be, m, and the number of essay questions be , e.

This forms a simultaneous equation below:

m + e = 26 ... (i)

3m + 8e = 123 ... (ii)

Multiplying (i) by 3 and (ii) by 1 we get:

3m + 3e = 78 ... (i)

3m + 8e = 123 ... (ii)

Subtracting (ii) - (i) we get;

0m + 5e = 45

5e = 45

e = 45 ÷ 5 = 9

So there are 9 essay questions.

and;

m + 9 = 26

m = 26 - 9 = 17

There are also 17 multiple choice questions.

Answer:

Second choice

Step-by-step explanation:

Answer:

(9,4.5)

Step-by-step explanation:

Answer:

The second and fourth one

Step-by-step explanation:

The open circle means more/less than or equal to and the closed circle is only more than or less than and it is greater so it goes right

Answer:

B

Step-by-step explanation:

Its B because you distribute each term inside the parenthesis by the number out side

4×2x= 8x

4×3= 12

Get rid of the parenthesis after distributing

which makes 8x+12

Answer:

B. 8x + 12

Step-by-step explanation:

First you'd start with the parentheses because of PEDMAS. But because you can't do anything in there, you go to multiplying 4 by each item inside the parentheses. 4x2x gives 8x. 4x3 gives 12. Leaving you with 8x+12. Hope that helps! :)

Answer:

[tex]\displaystyle -2[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Interval -1 ≤ x ≤ 3

a = -1, b = 3

f(a) = f(-1) = 4

f(b) = f(3) = -4

Step 2: Find Average

Answer:

There are about 7 x 10^6

Step-by-step explanation:

3.5*2029249= 7102347

rounds to 7000000= 7 x 10^6

Answer:

7.102347 times [tex]10^{6}[/tex].

Step-by-step explanation:

Alright.  This is an inanely large amount of words, as a drill for scientific notation.  The first step is, since the mystery book has 2,029,242 words, to turn this into a single digit multiplied by a power of ten - 2.029242 times [tex]10^{6}[/tex] (apologies for the weird font change in the middle).  The science fiction book is 3.5 times larger - multiply 2.029242 on a calculator (unless you really like suffering for some reason; then do it by hand) - it comes out as 7.102347.  Thus, the answer is 7.102347 times [tex]10^{6}[/tex].

Answer:

56 mph

Step-by-step explanation:

Process of elimination. 126 mph is much too high because it's more than the distance and they will arrive too early. 65 + 65 ÷ 2 = 97.5, that's more than 84 miles. The reason we divide by 2 is because of the .5. Now all we have is 56 mph. To check, 56 + 56 ÷ 2 = 84

Answer:

56

Step-by-step explanation:

84 / 1.5 = 56

The number of hours it would take Miller's family to reach their destination is [tex]2\frac{2}{3}[/tex] hours.

A fraction is written in the form of p/q, where q ≠ 0.

Fractions are of two types they are proper fractions in which the numerator is smaller than the denominator and improper fractions where the numerator is greater than the denominator.

Given, The Miller family must drive 8 hours to reach their destination.

The first time they stopped after driving [tex]2\frac{2}{3}[/tex] hours and again for the second time they stopped after driving [tex]2\frac{2}{3}[/tex] hours.

Therefore the total hours they drive is,

= [tex](2\frac{2}{3} + 2\frac{2}{3})[/tex] hours.

= (8/3 + 8/3) hours.

= 16/3 hours.

= [tex]5\frac{1}{3}[/tex] hours.

So, The number of hours they still need to drive is,

= (8 - 16/3) hours.

= (24 - 16)/3 hours.

= 8/3 hours.

= [tex]2\frac{2}{3}[/tex] hours.

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Answer: Switch the numbers in both points and change the negative numbers in all three points to positive

Step-by-step explanation:

Answer:

I guess it's 1/6

Step-by-step explanation:

make it braintliest please

Answer:keep, change, flip can you helpp me with my latest question please

Step-by-step explanation:

Answer:

12.5%

Step-by-step explanation:

1 coin landing tails up is 50%

2 coins is 50% of 50% so 25%

3 coins is 50% of 50% of 50% so 12.5%

Answer: x=4

Step-by-step explanation: Divide by 6 on both sides to get x=4

6x/6=24/6

x=4

x = 4

Divide both sides by 6

6x/6 = x

24/6 = 4

x=4

-3.4 that is the correct answer to the question

Answer:

i am kind of confused by the question but i would say to but all the numbers below 1 in the 10^-4 section and the numbers above 1 in the 10^6.

i might be wrong i don't what the question is really.

Step-by-step explanation:

Alan is converting large and small numbers from standard notation to scientific notation

10⁶  = 4.03 x 10⁶, 2.93 x  10⁶, 5 x  10⁶

10⁻⁴ = 1.2x 10⁻⁴, 6 x 10⁻⁴,  5.9 x 10⁻⁴

The standard form for a number is a method by which we write number in a format like b×10ˣ. The value of b should be in between 0 to 10.

Given that,

The numbers,

0.00012, 4030000, 2930000, 0.0006, 5000000, 0.00059

Taking number, 0.00012

To convert it into scientific notation,

It should be in from of  b×10ˣ,

So, now dividing and multiplying 10000 into the number 0.00012,

⇒  0.00012 x (10000/10000)

⇒  (0.00012 x 10000)/10000

⇒   1.2/10000

⇒   1.2x 10⁻⁴

Similarly,

0.0006 can be written as 6 x 10⁻⁴

And  0.00059 can be written as 5.9 x 10⁻⁴

Now taking number, 4030000

To convert it into scientific notation,

It should be in from of  b×10ˣ,

So, now dividing and multiplying 1000000 into the number 4030000,

⇒ 4030000 x (1000000/1000000)

⇒  (4030000 / 1000000) x 1000000

⇒   4.03  x 1000000

⇒   4.03 x 10⁶

Similarly,

2930000 can be written as 2.93 x  10⁶

And 5000000 can be written as 5 x  10⁶

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Answer:

3

Step-by-step explanation:

12*1/4

=12/4

=3

Answer:

the answer is 3 i think, if not, its going to be embarrassing

Answer:all real numbers are solutions

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Subtract 4f from both sides.

Step 3: Add 13 to both sides.

0=0

Answer:

all could be

f(0)=.12

f(.1)=-.4

f(.2)=1.3

f(.3)=2.6

f(.4)=3.7

Step-by-step explanation: