The choir at wise middle school was preparing for their Hispanic concert. While rehearsing their opening song they noticed it took 48.7 seconds to sing it.They felt it was too long and sang it again taking off 2.9 seconds from the original time. The third time they sang it they were able to take an additional 0.47 seconds off their time. How long did it take the choir to sing the song the third time?

Answers

Answer 1

Answer:

45.88 seconds

Step-by-step explanation:

[tex]t_1[/tex] = Time taken to sing the fist time = [tex]48.7\ \text{s}[/tex]

Time taken to sing the second time was [tex]2.9\ \text{s}[/tex] less than the first time so

[tex]t_2=t_1-2.9\\\Rightarrow t_2=48.7-2.9\\\Rightarrow t_2=45.8\ \text{s}[/tex]

Time taken to sing the third time was [tex]0.47\ \text{s}[/tex] less than the the second time

[tex]t_3=t_2-0.47\\\Rightarrow t_3=45.8-0.47\\\Rightarrow t_3=45.88\ \text{s}[/tex]

So the time it took the choir to sing the third time was 45.88 seconds.


Related Questions

The length of the rectangle is twice the width. Find the length of the rectangle if the perimeter is 42m.

Answers

Answer:

28m

Step-by-step explanation:

2x+x=42

3x=42

x=14

However, since the length of the rectangle is twice the width, we'll need to multiply it by 2.

So: 14 times 2=28

Find the distance between the two points in simplest radical form.
(1,8)(6,-4)

Answers

Distance in simplest radical form is 13

Or root 169

Can a linear function ever be even
or odd?
Can an exponential function ever be
even or odd?

Answers

Answer:

The exponential function x is neither. An exponential function is a sum of an even and an odd fuction. The even fuction is known as even x and odd function is known as  x. the x is even function and sinx is odd function.

But thats if its an x funtion so uf its just a plain function its known to be even!

Step-by-step explanation:

Hopefully this helped, if not HMu and I will try my best to get you a better answer!

In an asteroid field, 75% of the asteroids are carbonaceous asteroids. There are 375,000 carbonaceous asteroids in the asteroid field. How many asteroids are not carbonaceous? Asteroids are not carbonaceous.

Answers

Given:

In an asteroid field, 75% of the asteroids are carbonaceous asteroids.

There are 375,000 carbonaceous asteroids in the asteroid field.

To find:

The number of asteroids that are not carbonaceous.

Solution:

Let the total number of asteroids be x.

According to question,

[tex]75\%\text{ of }x = 375000[/tex]

[tex]\dfrac{75}{100}x=375000[/tex]

[tex]0.75x=375000[/tex]

Divide both sides by 0.75.

[tex]x=\dfrac{375000}{0.75}[/tex]

[tex]x=500000[/tex]

Asteroids not carbonaceous = Total asteroids - Carbonaceous asteroids

                                                [tex]=500000-375000[/tex]

                                                [tex]=125000[/tex]

Therefore, 125,000 asteroids are not carbonaceous.

what’s 15/25 in its simplest form?

Answers

Answer: 3/5

Step-by-step explanation: Just divide both by 5.

scientific notation for 7×10^9​

Answers

Answer:

7,000,000,000

Step-by-step explanation:

7×10^9

The number after ten is how many zeros you put.

Answer: 7000000000

Step-by-step explanation: 7x

1000000000

Fill in the blank with a constant, so that the resulting quadratic expression is the square of a binomial.
\[x^2 + 22x + \underline{~~~~}.\]

Answers

121.

Check: x^2+22x+121=(x+11)^2

Answer: 121

Step-by-step explanation:

The formula for the square of sums is [tex](a+b)^2=a^2+2ab+b^2[/tex].

Applying the formula, we see that the only option for b is 11 squared, or 121.

Which of the following represents the lowest speed in miles per hour?

Answers

Answer:

need more to answer can you give like units or something

Step-by-step explanation:

Answer:

need more info

Step-by-step explanation:

QUESTION OF THE DAY: Judy is recreating a small version of the Statue of Liberty out of clay. The scale for the statue is 3 inches to 100 feet. If the actual height of the statue is 305 feet, what would the height of the model be in inches?

Answers

Answer:

184in

Step-by-step explanation:

Since the scale for the statue is 3 inches to 100 feet, we can say 3:100 as a ratio.

To find approximately 305 feet you must divide 305 by 100.

100 can go into 300 evenly 3 times. Since the ratio is 3:100 you should multiply how many times the 100ft fit into the 300ft and the 3in (3 x 3) which is about 9in.

One way we can do this is to divide the hight of the Statue by the model height:

305ft 20in = 15.25ft 1in or 184in (12in per foot).

And so for every inch of the model, it represents 15.25 feet.

For 305 it would be

Which of the following numbers is irrational?
0.13
✓3
-0.3

Answers

the square root of 3 is irrational

A quadratic equation in standard form is written az = but c, where a, b, and
care real numbers and a is not zero.
A. True
B. False

Answers

Answer:

false

Step-by-step explanation:

If your breakfast costs $12 and you are
charged 9% sales tax, what is the total
cost of your meal?

Answers

Answer:

find 9% of 12

12 times 9 divided by 100

108/100

$1.08

12+1.08

Your mean costs $13.08

-Have a nice meal!

The answer is $13.08 and here are the steps :)

how to describe transformation

Answers

A movement of an object

Derek scored a 15/25 on his math test and Meredith scored a 8/14 on her science test. Who had the best score? Explain.

Answers

Answer:

Derek

Step-by-step explanation:

15/25

8/14

find common factor:

350 is the lcm for both of them

Derek: 15/25= 210/350

Meredith: 8/14= 200/350

So, Derek got a better score

Answer:

derek

Step-by-step explanation:

if u simplify them, meredith in simplest form in decimal is .571428

and derek when you simplify his in simplest form in decimal is .6

so therefore derek has a higher or better score

plz give me brainliest

[6×(4−2)+(21×23+1)]÷32

Answers

Answer:

Step-by-step explanation:

15.5

Answer:

15.5 is your answer. can I solve. for these u say yes or no

Evaluate 8(6+5)/2²+6(2)​

Answers

Answer:

34

Step-by-step explanation:

1. Add 6 and 5 and that multiplies with 8 which would be 88

2. Then divide by 4, leaving you with 22.

3. Add that with 6(2), 12, and that gives you 34

Use Pemdas. 6+5 = 11 . then 2 to the 2nd power is 4. 8x11 =88 then 6x2 is 12 .. 88 divided by 4 is 22 . Last 22+12 is 34.

At the amusement park there were t-shirts for sale for $18.95 each. James bought 4 of them. About how much did he spend?
$80.00
$60.00
$24.00
$75.80

Answers

James would be spending the amount of  $75.80 which is the correct answer would be an option (D).

What is the Multiplication operation?

In mathematics, the multiplication operation Values on each side of the operator are multiplied.

We have been given that there were t-shirts for sale for $18.95 each at the amusement park, and James bought 4 of them.

To determine the amount of cost did he spend.

The amount of cost is equal to the multiplication of each t-shirts cost and

quantity.

The amount of cost = the cost of each t-shirt × quantity

The amount of cost = $18.95 × 4

Apply the multiplication operation to get

The amount of cost = $75.80

Therefore, he would be spending the amount of  $75.80.

Learn more about the arithmetic operations here:

brainly.com/question/25834626

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WILL GIVE 75 POINTS!! will send $2 IN CASHAPP!

Here are recipes for two different banana cakes. Information for the first recipe is shown in the table.
1st Recipe: y = 1.5x
2nd Recipe: y = 7/4x
If you used 4 cups of sugar, how much flour does each recipe need?

a. First: 2 cups, Second: 8 cups
b. First: 7 cups, second: 6 cups
c. First: 4 cups, second: 2 cups
d. First: 6 cups, Second: 7 cups

Answers

Step-by-step explanation:

H hvuvuvuvuvuv9yvig kg

add 2/3 +-7/11 +-1/4​

Answers

Answer:

1 73/132

Step-by-step explanation:

GCF of 4, 11 and 3 is 132.

Convert the fractions and add!

please help!!! it doesn't show me the graph btw

Answers

Answer:

Yul I can't help u I don't understand it

is this a function or not a function explain why or why not

Answers

it is a function bc every x term is only used once (once an x term is used more than once, it isnt a function)

How many boxes should be shaded on the grid to show 3/8 x 3/4

Answers

Answer:

9 boxes

Step-by-step explanation:

2 Write the equation of the line that goes
through (-2, 4) and is parallel to the line y = 1/2 x + 2

Answers

hi

if the twi lines are  parallel , they have the same slope.

So  slope  is   1/2.  

equation of a line is  :  mx +p

The line goes throught  (-2 ; 4)

We have    1/2 ( -2)  + p =  4

                   -  2/2  +p = 4

                   -1 +p = 4

                       p = 4+1

                       p = 5

equation of the line  is   y = 1/2x +5

can you guys help with these questions??

Answers

Answer:

Step-by-step explanation:

<3 = 55° ( vertically opposite angles )

<4 = 180 - 105 = 75° ( linear pair )

<5 = 180 - ( 55 + 75 ) ( angle sum property of a triangle )

    = 180 - 130

    = 50°

<1 = <2 ( angles opposite to equal sides )

let < 1 and < 2 be x

55 + 2x = 180 ( angle sum property of a triangle )

2x = 180 - 55

2x = 125

x = 125 / 2

x = 62.5

therefore, < 1 = <2 = 62.5°

Hope this helps

plz mark as brainliest!!!!!!

2x-3=x+1
Show the work on what x is

Answers

Answer:

x=4

Step-by-step explanation:

Let's solve your equation step-by-step.

2x−3=x+1

Step 1: Subtract x from both sides.

2x−3−x=x+1−x

x−3=1

Step 2: Add 3 to both sides.

x−3+3=1+3

x=4

Answer:

x=4

2x - 1x = x

x-3= 1

3+1 =4

so x=4

The graph of f(x) = 7^x is stretched vertically by a factor of five. Which of the following is the equation of the new graph, g(x)?
A.
g(x) = 5^(7x)
B.
g(x) = 7(5^x)
C.
g(x) = 7^(5x)
D.
g(x) = 5(7^x)

Answers

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[tex]g(x) = 5( {7}^{x} )[/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

The correct answer is (( D )) .

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The Graph transformation of [tex]f(x) = 7^x[/tex] which stretched vertically by a factor of five is  [tex]g(x) = 5(7^x)[/tex] .

What is graph transformation?

Graph transformation is the process by which an existing graph, or graphed equation, is modified to produce a variation of the proceeding graph .

According to the question

The graph of [tex]f(x) = 7^x[/tex]  stretched vertically by a factor of five .

i.e

we have to make change is graph equation so y axis changes 5 times .

Therefore ,

[tex]f(x) =( 7^x ) * 5[/tex]

The Graph transformation  of f(x) is

[tex]g(x) = 5(7^x)[/tex]

Hence, the Graph transformation of [tex]f(x) = 7^x[/tex] which stretched vertically by a factor of five is  [tex]g(x) = 5(7^x)[/tex]

To know more about Graph transformation here:

https://brainly.com/question/10059147

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What is the area of this figure?
4 mm
4 mm
12 mm
13 mm
9 mm
4 mm
12 mm

Answers

What is the figure sir/ma’am

#2: Solve the linear system below using the elimination method. Type your
answer as an ordered pair in the form (#,#). *
5x + 7y = 33
11x + 7y = 39
+

Answers

The given linear system is:

[tex]\displaystyle \left \{ {{5x+7y=33} \atop {11x+7y=39}} \right.[/tex]

The question is asking to solve using elimination. When eliminating, you can either eliminate x or y. In this system, y is much easier to eliminate. The y variable in both equations are 7y. To eliminate, one of them has to be negative, so multiply one of the equations by -1.

I will be multiplying the second equation by -1.

[tex]\displaystyle (11x + 7y = 39) \times -1 = -11x-7y=-39[/tex]

Rewrite the system:

[tex]\displaystyle \left \{ {{5x+7y=33} \atop {-11x-7y=-39}} \right.[/tex]

Subtract:

[tex]5x+7y=33\\-11x-7y=-39[/tex]

[tex]5x-11x=33-39\\-6x=-6[/tex]

Lastly, you need to leave the variable x alone. The variable is currently -6x or -6 times x. To remove it, you need to do the opposite of it, which is dividing by -6.

[tex]\displaystyle \frac{-6x}{-6} =\frac{-6}{-6}[/tex]

[tex]\displaystyle x=1[/tex]

Now that you have the value of x, substitute it into one of the equations to find y. I will be substituting it into the first equation.

[tex]5x+7y=33 \rightarrow 5(1)+7y=33[/tex]

Open the parentheses and multiply:

[tex]5+7y=33[/tex]

Move 5 to the other side to leave the variable alone:

[tex]5+7y-5=33-5[/tex]

You will be subtracting since you're "removing" it by doing the opposite of it.

[tex]7y=28[/tex]

Lastly, divide both sides by 7 to leave y alone.

[tex]\displaystyle \frac{7y}{7} =\frac{28}{7}[/tex]

[tex]y=4[/tex]

[tex]\displaystyle (x,y) \rightarrow (1, 4)[/tex]

The answer is (1, 4).

Answer:

(1, 4)

Tbh this question was a bit of a challenge for me but hopefully it helps ya.

Step-by-step explanation:

First, let's solve for y. So we have to eliminate the x values.

(5x + 7y = 33 ) *11

(11x + 7y = 39) *-5

___________

55x + 77y = 363

-55x -35y = -195   This eliminates the x value.

42y = 168 Divide both sides by 42 to isolate y: 168/42=   y = 4

Now let's solve for x.

(11x + 7y = 39) *7

(5x + 7y = 33 ) *-7

___________

77x + 49y = 273

-35x -49y = -231   This cancels out the y values, which leaves 42x = 42

x = 1 and y = 4, so the answer is (1, 4)

Find the slope of the line passing through the points (-3, 7) and (2, -6).

Answers

Answer:

-13/5

Step-by-step explanation:

=y2-y1/x2-x1

= -6-7/2--3

= -13/5

The cost of 4 pounds of bananas is $3.52. What is the constant of proportionality that relates the cost of dollars, y, to the number of pounds of bananas, x?

Answers

.88
3.52 divided by 4
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