4.
Consider the following amount of energy
used for three different activities:
. 1 minute of walking uses
25 kilojoules of energy
A (4
• 1 minute of jogging uses 84 kilojoules
of energy
1 minute of swimming uses
50 kilojoules of energy
a) How many more kilojoules of energy
would you use in an hour of jogging
than an hour of swimming?
b) To the nearest tenth, how many
minutes of walking would you have to
do to burn up the 1,130 kilojoules in a candy bar

The number of solutions in the equation 3x² + 4x - 5=0 is (b) two real solutions

The equation is given as:

3x² + 4x - 5=0

A quadratic equation is represented as:

ax² +bx + c=0

Where the discriminant is:

d = b² - 4ac

So, we have:

d = 4² - 4 * 3 * -5

Evaluate

d = 76

If the discriminant is greater than 0, then the equation has 2 real roots.

Hence, the number of solutions is (b) two real solutions

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In a case where the expression is give as volume V of a fixed amount of a gas varies directly as the temperature T and inversely as the pressure P, then the pressure will be 7kg/cm^2.

V = k T/ P

and V= 70 cm^3

T = 420 kelvin

P = 18 kg/cm^2

where K is constant of proportionality,

70 =( k * 420) / 18

k = (70 * 18) / 420

k= 3

Then we were given that the pressure=?

T = 140 kelvin

V = 60 cm^3

then V = k T/ P

P= kT/V

P= (3*140)/60

=7

Then the pressure is 7kg/cm^2

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The unit rate of the equation y = -4x + 2 is -4

From the question, we have the following equation

y = -4x + 2

The above equation is a linear equation

Linear equations are represented as

y = mx + c

Where

When the equations y = mx + c and y = -4x + 2 are compared, we have

Unit rate, m = -4

Y-intercept, c = 2

Note that all linear equations have a constant rate of change

Hence, the unit rate in the linear equation is -4

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The value of g after solving the expression, 5/2-2g = 5g/2-3+g, is 1.

According to the question,

We have the following expression:

5/2-2g = 5g/2-3+g

Now, moving the terms with the same variables on one side and the integers on another side.

Note that when we move any number of term from one side to another which is in addition or subtraction will result in change of the sign from minus to plus and plus to minus.

5/2+3 = 2g+5g/2+g

Taking 2 as the least common factor on the left hand side and right hand side:

(5+6)/2 = (4g+2g+5g)/2

11/2 = 11g/2

Now, 11/2 on the left hand side can be divided by 11/2 on the right hand side:

g = 1

Hence, the value of g is 1.

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Means if a number is bigger than other number.

The three inlet pipes, each working alone can fill the pool in 8 seconds, 12 seconds, and 16 seconds, respectively. it will take them 3.69 seconds  fill the pool

The problem requires to determine how long it takes to fill the pool when the three pipes are working simultaneously

let the time to fill the the pool when the three pipes are working simultaneously be y, such that

8 seconds pipe fills the pool in y/8 seconds

12 seconds pipe fills the pool in y/12 seconds

16 seconds pipe fills the pool in y/16 seconds

Adding the times together

y/8 + y/12 + y/16 = 1

13y/48 = 1

y = 48/13

y = 3.69 seconds

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The possible cards can be made 6719448100.

What is permutation & combination?

Subsets of a set can be created in two separate ways combination and permutation. The subset's components can be listed in any order when combined. The components of the subset are listed in a permutation in a certain order.

We have,

Letters must only be consonants = 26 - 5.

So, the total number of consonants are 21.  

There are 21 choices for the first letter, 21 choices for the second letter,  21 choices for the thirds letter,  21 choices for the fourth letter. For each of these letters, therefore 21 × 21 × 21 × 21 = 194481 possible pairs of letters.

There are 10 possibilities for the first digit & 10 possibilities for the second. therefore there are 10 x 10 = 100 different numbers.

Combining these results, it follows that there are 67194481 x 100 =  6719448100 different cards.

Hence, The possible cards can be made 6719448100.

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The spoon holds 1250 milligrams of sugar if Kenneth needs to remove 12 spoonfuls.

We are given;

Kenneth is making a cake for the first time.

His recipe calls for 280 grams of sugar, but he accidentally pours 295 grams on his first try.

He uses a small spoon to remove the extra sugar.

He needs to remove 12 spoonfuls.

We need to find the quantity of sugar his spoon hold.

First, let us find the extra amount of sugar;

Extra sugar = 295 - 280 = 15 grams.

We will find each spoon by using the unitary method;

Since 12 spoonfuls hold 15 grams.

So, 1 spoonful holds 15 / 12 grams = 1.25 grams = 1250 milligrams.

So, 1 spoonful holds 1250 milligrams of sugar.

Thus, the spoon holds 1250 milligrams of sugar if Kenneth needs to remove 12 spoonfuls.

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Answer:

x=2 and =-4

Step-by-step explanation:

Answer:

Step-by-step explanation:

You want the equations of the horizontal and vertical lines that pass through (2, 3).

A horizontal line has an equation of the form ...

  y = c . . . . . for some constant c

The value of y is the same for every value of x.

To make such a line go through the point (2, 3), we must have ...

  y = 3

A vertical line has an equation of the form ...

  x = c . . . . . for some constant c

The value of x is the same for every value of y.

To make such a line go through the point (2, 3), we must have ...

  x = 2

Answer:

[tex] = \frac{10}{0.2} = \frac{100}{2} = 50 \\ = \frac{10}{0.02} = \frac{1000}{2} = 500 \\ = \frac{10}{0.002} = \frac{10000}{2} = 5000 \\ \\ [/tex]

hopefully that will help u

1. The completion of the inventory table is as follows:

2. The Cost of Ending Inventory and the Cost of Goods Sold under LIFO, FIFO, and Weighted-Average, are as follows:

                                      LIFO           FIFO      Weighted-Average

Ending inventory          $425          $691                $573

Cost of goods sold      $492          $226               $344

FIFO (First-in, First-out) lies on the assumption that the physical flow of goods sold depends on the chronological order of acquisition.

LIFO (Last-in, First-out) assumes that the cost of goods sold should be based on the latest inventory purchases.

The weighted-average method uses the average cost of goods to determine both the ending inventory and the cost of goods sold.

LIFO:

Ending inventory = $425 ($917 - $492)

Cost of goods sold = $492 (12 x $20 + 12 x $21)

FIFO:

Ending inventory = $691 (9 x $11 + 17 x $20 + 12 x $21)

Cost of goods sold = $226 ($917 - $691)

Weighted Average:

Ending inventory = $573 (40 x $14.33)

Cost of goods sold = $344 (24 x $14.33)

                                    Units  Unit Cost    Total Cost

Jan. 1      Beg. Inventory  20     $8.00           $160

May 10   Purchases          15     $11.00           $165

June 30 Purchases          17    $20.00         $340

Dec. 10  Purchases          12    $21.00          $252

Total                                64                          $917

Units sold                       24

Ending inventory           40 (64 - 24)

Average cost = $14.33 ($917/64)

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2. Calculate the cost of the ending inventory and the cost of goods sold under LIFO, FIFO, and Weighted-Average.

Answer:

x=5

Step-by-step explanation:

7x=70/2

7x=35

7x/7=35/7

x=5

Answer: purple is the greatest

The probability that the marble picked is not yellow is:

10/12

Given:

we have a bag containing exactly 2 red, 2 yellow, 4 green,

3 white, and 1 blue marble.

we are asked to determine the probability that the marble is not yellow = ?

Favorable outcomes for yellow marbles = 2

Total number of outcomes = 12

Probability, P(E) = Number of outcomes favorable to E/Number of all possible outcomes of the experiment.

P(picking an yellow marble) = 2/12

therefore,

P(not picking a yellow marble) = 1 - 2/12

= 12-2/12

= 10/12

Hence the probability that the marble is not yellow is 10/12

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The time spent exercising for a student who spends 6 hours texting is 6 hours.

The scatter plot is given in the question,

As per the given scatter plot, we take the two points (9, 1) and (3,7).

The equation of the line of best fit:

Let the approximate equation would be as:

y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x -x₁]

x₁ = 9, y₁ = 1

x₂ =3, y₂ = 7

y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x -x₁]

y - 1 = (7 - 1)/(3 - 9)](x - 9)

y - 1 = (- 6/6)(x - 9)

y - 1 =  -1(x - 9)

y = -x + 9+ 1

y = -x + 10 ...(i)

The time spent exercising by a student who spends 4 hours texting

This means that x = 4.

Substitute the value x =4 in the equation (i), and solve for y

y = -4 + 10

y = 6

Hence, the time spent exercising for a student who spends 6 hours texting is 6 hours.

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Answer: I believe both the x and y- intercepts are “(0,0)”

Step-by-step explanation: there is only one intercept and it is at the origin (0,0) making both the x and y - intercepts (0,0) :)

If on the third day, she earns three times as much as the second day. The amount that she earn on the first day is $856.

Let  a = Amount earned on the first day

Let b = Amount earned on the second day

Let c = amount earned on the third day

Let a + b + c =2568,

Hence,

2b + b +3b =2568

6b =2568

b =2568/6

b =428 second day

So,

a = 2b

a =2(428)

a =856 first day

Thus

c = 3b where b = 428

c=3(428)

c=1284 third day

Check:

a +b + c = $2568

856 + 428 + 1284 = $2568

Therefore she earned $856 on the first day.

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Concurrent lines meet at the point of concurrency.

The pH of the liquid which is 3.886 indicates that it is more acidic than coffee.

The pH of a solution gives a measure of the concentration of hydronium ions in the solution, and therefore, indicates the level of acidity or basicity of the solution.

pH values ranges from 0 to 14, with solutions that are more acidic having a pH of less than 7, while basic solutions have a pH of more than 7.

The given pH of coffee = -4.886

The concentration of the liquid = 10 × The concentration of the ions in coffee

Which gives;

-㏒₁₀C = 4.886

Concentration of the hydronium ions in coffee, C = [tex]10^{(-4.886)}[/tex]

Concentration of ions in the unknown liquid = 10 ×  [tex]10^{(-4.886)}[/tex] = [tex]10^{(-3.886)}[/tex]

pH of the unknown liquid = [tex]-log_{10} \left(10^{(-3.886)}\right) = 3.886[/tex]

The pH of the unknown liquid indicates that it is more acidic than coffee

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Answer:

$35

Step-by-step explanation:

All you have to do is subtract 10 from 45 because it was $10 off and the original price was $45.

Answer:

The answer is 55, you can figure this out as each number is increasing by 10

a_n=-5+10n

hope it helps

The depreciation expense for each year to the new delivery truck purchased by Cookie Palace would be $4, 375.

When given the residual value, depreciation can be found using the straight - line method which has the formula:

= (Cost of delivery truck - residual value) / Number of years in estimated life

Solving for the depreciation expenses each year gives:

= (20, 000 - 2, 500) / 4

= 17, 500 / 4

= $4, 375

In conclusion, the depreciation to the delivery truck every year would be $4, 375.

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The value of the test statistic of the given problem is; -17.969

In statistics, hypothesis testing is simply a method used to test a claim about a population.

We are given;

Sample size; n = 1160

Sample proportion; p^ = 88% = 0.88

The percentage of 97% represents the proportion of a population and this tells us that we are making a claim about the population proportion (p) in the hypotheses.

We claim "fewer then 97%", which indicates less than 97% or 0.97:

p<0.97

The null hypothesis states that the population proportion is equal to the value mentioned in the claim.

H₀: p = 0.97

The claim is either the null hypothesis or the alternative hypothesis. If the null hypothesis is the claim, then the alternative hypothesis states the opposite of the null hypothesis.

Hₐ: p < 0.97

The value of the test-statistic is gotten from the formula;

z = (p^ - p)/(√(p(1 - p)/n))

z = (0.88 - 0.97)/(√(0.97(1 - 0.97)/1160))

z = -17.969

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The solution for the function f(x) is x = 9/4 or -1.

Function is a combination of different types of variable and constants.

A function is denoted by f(x).

The given function is,

f(x) = x²+11x²-15x-27

⇒f(x) = 12x²-15x-27

To find solution of this function, find factor,

f(x) = 12x²-27x+12x-27

f(x) = 3x(4x-9) + 3(4x-9)

f(x) = (4x-9)(3x+3)

To find solutions substitute f(x)=0,

⇒(4x-9)(3x+3) =0

x=9/4 or -1

So the possible value of x is 9/4 or -1.

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$17690 is the amount Michael owed his dad .

 Equations and equations of maximum degree 1 are also called "linear equations". The linear equation formula can be written as Y = mx + b. where m is the slope of the line, b is the y-intercept, and x and y are the variables. Slope indicates the direction and slope of the line. . This is because (0,y) is the point where the line intersects the y-axis.

The amount Michael owes is given by :

y = - 290x +18,560

x = number of months ; y = amount owed

Amount owed after 3 months :

Put x = 3 in the equation :

y= - 290(3) +18,560

y = - 870 + 18560

y = 17690

According to the general form of a linear equation :

y = mx + c

Where, m = slope ; c = intercept

The slope = - 290 ; Intercept = 18560

Slope is the change in y per unit change in x ; The slope means that amount owed, y decreases by 290 per month

The intercept shows that the original amount borrowed is 18560

Amount Michael owes his father decreases by 290 per month.

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Answer:

The Number is -5

Step-by-step explanation:

We will form the Equation and solve for the Number

Let the Number be x

Product of 30 and a Number = 30x

75 less than the Product of 30 and a Number = 30x - 75

75 less than the Product of 30 and a Number is -225

Then 30x - 75 = -225

Now solve for x (the Number)

add 75 for both sides

30x = -225 + 75 = -150

Divide both sides by 30

x = -150 / 30 = -5

Glad to Help

Answer:

154 legs

Step-by-step explanation:

40-3=37

37 times 4 = 148

3 times 2 ° 6

148+6= 154

Answer: 154 legs

Step-by-step explanation: First, multiply 37×4 because there are 37 cows with 4 legs, which gets you 148. Since there are 3 cows with only 2 legs, do 3×2=6. Finally, add 148 and 6 to get 154 legs.

please give brainliest!

a. Jays total income is $93.50 and total spending is $103.25.

b. Jays Spending is greater than income.

c. Total saving is -9.75

d. Jays savings are negative. Since Jays spending is greater than income it does not make sense.

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

Given,

Jays Income:

Part time job: $83.50

Allowance: $10

Spending:

Clothing: $32.50

Lunches: $19.75

Entertainment: $29.00

Transportantion: $22.50

a. Jays total income and total spending

Total income = $83.50+$10.00

=$93.50

Total spending = $32.50+$19.75+$29.00+$22.50

=$103.25

b. Spending is greater than income.

c. Jays saving=Total income - Total spending

=93.50-103.25

=-9.75

d. Jays savings are negative. Since Jays spending is greater than income it doesnt make sense.

Hence,

a. Jays total income is $93.50 and total spending is $103.25.

b. Jays Spending is greater than income.

c. Total saving is -9.75

d. Jays savings are negative. Since Jays spending is greater than income it doesnt make sense.

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