find the percent change from the first value to the second. 30; 42​

I believe that the answer is 25.

Answer:

38

Step-by-step explanation:

Because ST is midsegment the half of DG

BRAINILIEST PLEASE

Answer:

$414

Step-by-step explanation:

Let's start by figuring out how much he earns per hour.

253/11=23

Greg earns $23 per hour. So if he worked for 18 hours, he would make $414.

Answer:

$414

Step-by-step explanation:

First, we have to find the unit rate, so our first equation is:

253 ÷ 11 = 23

So Greg gets $23 an hour

So for 18 hours our equation is:

23 x 18 = 414

So Greg would make $414 if he worked for 18 hours

Answer:

Map scale is 1:400000 => 1 cm on the map represents 400000 cm (4 km) on the ground.

So, 18 km on the ground is represented by 18/4 cm or 4.5 cm on the map.

Answer: 4.5 cm

Step-by-step explanation:

The clear and easiest way to deal with this problem is to convert all measurements to centimeters because that is the stated unit to be used. In SI, the metric prefixes can be written as exponents. The prefix kilo corresponds to 10^3 while the prefix centi corresponds to 10^-2 so 18 km = 18 x 10^3 m = 18 x 10^3 x 10^2 cm= 18 x 10^5 cm.

The number 18 x 10^5 cm is to be reduced to 400,000 times in the map and it means a process of division is to be performed. Dividing 18 x 10^5 cm by 400,000 gives a quotient of 4.5 cm.

This means that an actual distance of 18 km, on the map it just corresponds to 4.5 cm distance if the scale used is 1:400,000.

Answer:

[tex]the \: value \: of \: the \: vertical \: component \to : \\ (v_v) = 3m {s}^{ - 1} \\ [/tex]

Step-by-step explanation:

[tex]let \: the \: velocity \: be \to \: v \\let \: the \: horizontal \: component \: be \to \: v_h \\ let \: the \: vertical \: component \: be \to \: v_v \\ applying \: the \: pythagorean \: rule \: of \: vectors \to : \\ {v}^{2} = {v_v}^{2} + {v_h}^{2} \\ {v_v}^{2} = {v}^{2} - {v_h}^{2} \\ {v_v}^{2} = {5}^{2} - {4}^{2} \\ v_v = \sqrt{(25 - 16)} \\ v_v = \sqrt{9} \\ \boxed{ v_v = 3 {ms}^{ - 1} }[/tex]

Answer:

$130.7086

Step-by-step explanation:

List price of phone answering system = $99.86

Handset cord = $8.95

Telephone wire = 45 cent/foot ; length = 50 feet

Rebate on phone system = $5

Store coupon =$1 of each accessory

Sales tax = 6% on final price

Price before coupon = (99.86 + 8.95 + (50*0.45)) =$131. 31

Number of accessories = 3

Total coupon = $5 + ($1 * 3) = $8

Price after coupon = final price : $131.31 - $8 = $123.31

Sales tax = 0.06 * $123.31 = $7.3986

Amount paid = $123.31 + $7.3986 = $130.7086

Answer:

The coordinates of point D( 4,4)

Step-by-step explanation:

Step(i):-

Given points are E(10,4) and B(16,4)

'E' is the mid-point of segment BD

Let D(x₁, y₁) be a point

   E = midpoint of segment BD

 [tex](10,4) = (\frac{x_{1} +x_{2} }{2} , \frac{y_{1} +y_{2} }{2} )[/tex]

[tex]10 = \frac{x_{1} +16 }{2}[/tex]    

20 = x₁ + 16

20-16 = x₁

  x₁ =4

Step(ii):-  

[tex]\frac{y_{1} +y_{2} }{2} = 4[/tex]

[tex]\frac{4 +y_{2} }{2} = 4[/tex]

4 + y₂ = 8

    y₂ = 8-4 =4

The co-ordinates of point D( 4,4)

Answer:

125 fish

Step-by-step explanation:

The Tide Pool has 10 crustaceans and 25 fish. So, simplified, for every 2 crustaceans there are 5 fish. That also means, the amount of crustaceans is 2/5 of the amount of fish.

Deep Blue has 50 crustaceans. That is 2/5 of how many fish are in the tank. Multiply 50 by 5/2 to get the amount of fish.

(50 * 5)/2

250/2

There are 125 fish in the Deep Blue tank.

Answer:125

Step-by-step explanation:

 ??? ??? I was also looking for the answer

Annwer:

Diameter

Explanation:

A chord that passes through the of a circle is called a diameter and is the longest chord.

hehe:)

Answer:

Diameter

Step-by-step explanation:

Answer:

$1350

Step-by-step explanation:

Percentage commision earned = 10%

Amount needed to pay for concert = $135

Hence, total sales for the week must be :

Let total sales = x

10% of total sales = $135

10/ 100 * x = $135

0.1x = $135

x = $135 / 0.1

x = $1350

Complete Question

Kayla is baking cupcakes. She needs 2 3/4cups of white sugar and 1 5/6 cups of brown sugar. How much sugar is in Kayla's cupcakes?

Answer:

4 5/12 Cups of sugar

Step-by-step explanation:

She needs 2 3/4cups of white sugar and 1 5/6 cups of brown sugar.

The amount of sugar is in Kayla's cupcakes is calculated as:

White sugar + Brown Sugar

= 2 3/4 cups + 1 5/6 cups

2+ 1 + [ 3/4 + 5/6]

Lowes Common Denominator = 12

3 + [9 +10/12]

3 + 19/12

3 + 1 5/12

= 4 5/12 Cups of sugar

Therefore, 4 5/12 Cups of sugar is in Kayla's cupcakes.

Answer:

104 bagels

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

C is the answer.

Step-by-step explanation:

i just got it right so that means you would too> let's goooo!!

The employees will have to travel within 19.25 minutes to 28.75 minutes.

'Normal distribution is a continuous probability distribution wherein values lie in a symmetrical fashion mostly situated around the mean.'

According to the given problem,

Mean time = 24 minutes

Standard deviation = 5 minutes

Therefore,

⇒24 + 5 = 29

⇒24 - 5 = 19

Now,

(29 - 19) * 95% = 9.5

Hence, we can conclude that 95% of the employees will have to travel within 19.25 minutes to 28.75 minutes.

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Answer:

this right answer for this would be D

Answer:

D brainly won't let me explain..

Answer:

slope=200

y-intercept=500

Step-by-step explanation:

Equation of straight line in slope intercept form is given as

[tex]y=mx+b[/tex]

here

slope=m=200/day

y-intercept=b=500

[tex]y=200x+500[/tex]

Answer:

The dimensions of the lawn are 22 m and 18 m

Step-by-step explanation:

Let us solve the question

Let the length of the rectangular lawn is x m and its breadth is y m

∵ The length of the lawn = x meters

∵ The breadth of the lawn = y meters

∵ Its perimeter = 80 meters

→ The formula of the perimeter is P = 2(length + breadth)

∴ 2(Length + breadth) = 80

→ Substitute the length by x and the breadth by y

∴ 2(x + y) = 80

→ Divide both sides by 2

∵ (x + y) = 40

∴ x + y = 40 ⇒ (1)

∵ The length had been 2 m less    

∴ The new length = x - 2 meters

∵ breadth had been 2 m more

∴ The new breadth = y + 2 meters

∵ The lawn would have been a square

→ The square has equal sides, then equate the new length and breadth

∴ x - 2 = y + 2

→ Add 2 to both sides

∵ x - 2 + 2 = y + 2 + 2

∴ x = y + 4 ⇒ (2)

→ Substitute x in equation (1) by equation (2)

∵ y + 4 + y = 40

→ Add the like terms

∴ 2y + 4 = 40

→ Subtract 4 from both sides

∵ 2y + 4 - 4 = 40 - 4

∴ 2y = 36

→ Divide both sides by 2

∴ y = 18

→ Substitute y by 18 in equation (2) to find x

∵ x = 18 + 4

∴ x = 22

∴ The dimensions of the lawn are 22 m and 18 m

Answer: [tex]\dfrac12[/tex] of candy is left.

Step-by-step explanation:

Given: Fraction of candy bar I got = [tex]\dfrac14[/tex]

Fraction of candy bar friend got = [tex]\dfrac14[/tex]

Considering whole candy as 1.

Then, fraction of candy left = [tex]1-\dfrac14-\dfrac14[/tex]

[tex]=1-\dfrac24\\\\=1-\dfrac12\\\\=\dfrac12[/tex]

Hence, [tex]\dfrac12[/tex] of candy is left.

Answer:

Step-by-step explanation:

m

Answer:

z=500

Step-by-step explanation:

since we know that the whole equation is equal to 250, we can substitute values in.

250=150/1/5 -z

250=750-z

-500=-z

z=500

The value of z for the function f(x)=150/x-z is z=500.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the function f is defined by f(x)=150/x-z where z is a constant. The value of the function at x = 1/5 is 250.

The value of the constant z will be calculated as,

The whole equation is equal to 250, we can substitute values in.

250=150/1/5 -z

Simplify the equation and solve for the value of z,

250=750-z

-500=-z

z=500

Therefore, the value of z for the function f(x)=150/x-z is z=500.

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Answer:

y=9

Step-by-step explanation:

-2y + 6 = -12

-2y - 6 = -6

-2y = -18

-2/y= -18/-2

y= 9

You need to subtract six one both sides first, that will cancel out the positive six, and that will also give you this:

-2y = -18

Now, divide negative two on both sides, that will cancel out both the negative signs, and it will also cancel out the two and it will give you your final answer:

y = 9

Answer: where is the rest of the question?

Step-by-step explanation:

The right presentation of the question is:

(a) Write 32 + 24 as a product of the two factors using the GCF and the distributive property.

(b) Write 32 + 23 as a product of the two factors using the GCF and the distributive property.

Answer:

[tex](a)\ 32 + 24 = 8*7[/tex]

[tex](b)\ 32 + 23 = 5*11[/tex]

Step-by-step explanation:

Solving (a):

First, we take the GCF of 32 and 24

[tex]32 = 2 * 2 * 2 * 2 * 2[/tex]

[tex]24 = 2 * 2 * 2 * 3[/tex]

Take common factors:

[tex]GCF = 2 * 2 * 2[/tex]

[tex]GCF = 8[/tex]

So, we factorize 32 and 24 using 8.

The expression becomes:

[tex]32 + 24 = 8(4 + 3)[/tex]

Simplify the expression in bracket

[tex]32 + 24 = 8(7)[/tex]

Remove bracket

[tex]32 + 24 = 8*7[/tex]

--------------------------------------------------------------------------------------------------

Solving (b):

[tex]32 + 23 =[/tex]

32 and 23 do not have a common factor, so we have to start by writing 32 as 30 + 2

[tex]32 + 23 = 30 + 2 + 23[/tex]

Add 2 to 23

[tex]32 + 23 = 30 + 25[/tex]

Take the GCF of 30 and 25

[tex]30 = 2 * 3 * 5[/tex]

[tex]25 = 5 * 5[/tex]

Take common factors:

[tex]GCF = 5[/tex]

So, we factorize 30 and 25 using 5.

[tex]32 + 23 = 5(6 + 5)[/tex]

Simplify the expression in bracket

[tex]32 + 23 = 5(11)[/tex]

Remove bracket

[tex]32 + 23 = 5*11[/tex]

Answer:

6,10,14,...

Find the 30th term.

18,22,26,30

Explanation:

+4 each time?

Answer:

b

Step-by-step explanation:

the chocolate chip cookies are 5/15 and the equavilent is 1/3

Answer:

(3n)- 6 or the other way around 6-(3n)

Step-by-step explanation:

Answer:

8 specialty pizzas

Step-by-step explanation:

the ratio is 3 cheese pizzas for every 2 specialty pizzas 3/2 so you multiply 2 times 12 (2 × 12= 24) and then divide the 24 by 3 (24 ÷ 3= 8)

Answer:

hello ! i just did this project and received a 100,, so here you are ::

1. I hypothesize that if you continue to add more drops, then the time it takes will continue to increase.

2. A; 9.70 secs, B; 14.63 secs, C; 18.78 secs, D; 28.70 secs, E; 31.45 secs.

3. The formation continued to increased. As more was added, the time it took to reach the full reaction was increased.  

4. Yes.  

5. When the concentration of all the reactants increases, more molecules or ions interact to form new compounds, and the rate of reaction increases. When the concentration of a reactant decreases, there are fewer of that molecule or ion present, and the rate of reaction decreases.

6. 6mL.

Step-by-step explanation:

like i said,, i go this correct so dw ! <3

The rate of reaction depends on the slow step of a reaction.

A hypothesis is a tentative explanation of an observation. This question refers to an experiment so I will try to explain as much as possible. We can see that the rate of reaction is determined by the concentration of the ascorbic acid.

Hence, we can assert that, the more the concentration of the ascorbic acid, the lower the rate of reaction. The rate of reaction depends on the slow step of a reaction.

We know that the molar mass of ascorbic acid is 176 g/mol. The mass of ascorbic acid is  6 g. Hence;

Number of moles of ascorbic acid = 6 g/176 g/mol = 0.034 moles

concentration of ascorbic acid = 0.034 moles/20 × 1 × 10-3 = 1.7 M

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