15,35,40 will it make a right triangle

The average time of the 20 athletes who did not qualify for the final is 11.2 seconds .

Step-by-step explanation:

Here we have , Twenty-eight athletes participate in a 100-meter race. The time of each athlete is measured during the qualification round. The average time is 11 seconds. The 8 athletes with the fastest time qualified for the final. The average time of these 8 athletes is 10.5 seconds. Let's have equations for this:

[tex]\frac{x_1+x_2+.....+x_2_8}{28} = 11[/tex] where [tex]x_1, x_2, ....., x_2_8[/tex] are athletes

⇒ [tex]x_1 + x_2 + .. + x_2_8 = 11(28)= 308[/tex]

⇒ [tex](x_1 + x_2 + .. + x_8 )+ (x_9+x_1_0+...+x_2_8) = 308[/tex]

⇒ [tex](\frac{x_1 + x_2 + .. + x_8}{8} )(8)+ (\frac{x_9+x_1_0+...+x_2_8}{20} )(20) = 308[/tex]

⇒ [tex]10.5(8)+m(20) = 308[/tex] , where m is average time of the 20 athletes who did not qualify for the final.

⇒ [tex]84+m(20) = 308[/tex]

⇒ [tex]20m= 224[/tex]

⇒ [tex]m=11.2[/tex]

∴ The average time of the 20 athletes who did not qualify for the final is 11.2 seconds .

Answer:

6^16

Step-by-step explanation:

4 x 4 = 16

Answer:

Step-by-step explanation:

if bases are equal then powers are added during multiplication.

x^a×x^b×x^c=x^{a+b+c}

here [tex]6^4 \times 6^4=6^{4+4}=6^8[/tex]

Answer:

(6 + 9 + 24)/3

Step-by-step explanation:

First, you must add 6, 9, and 24.

6 + 9 + 24

Now you need to divide that sum by 3.

You must use parentheses to show the sum being divided by 3.

(6 + 9 + 24)/3

None of your expressions contain a division sign, so there is no answer contained in the choices. Did you use the equal sign to mean a division sign?

Answer:

[tex]x=40^o[/tex]

Step-by-step explanation:

the picture of the question in the attached figure

step 1

Find the measure of the interior angle of a regular nonagon

The formula to calculate the measure of the interior angle in any polygon is given by

[tex]\frac{(n-2)180^o}{n}[/tex]

where

n is the number of sides

In this problem we have

n=9 sides

substitute

[tex]\frac{(9-2)180^o}{9}=140^o[/tex]

step 2

Find the value of x

Remember that

The sum of the interior angle and the exterior angle in any vertex of the polygon must be equal to 180 degrees

so

[tex]x+140^o=180^o[/tex]

solve for x

[tex]x=180^o-140^o=40^o[/tex]

Answer: answer is B, long term asset

Step-by-step explanation:

This is because cars are depreciated over time. It is therefore reported under the long term asset in a balance sheet.

Answer:

  6:00 AM

Step-by-step explanation:

London is 9 hours behind Tokyo, so it is still 6:00 AM in London when it is 3:00 PM in Tokyo.

Answer:

85.30184

Step-by-step explanation:

1ft........30.48cm

x .........2600cm

x=2600×1/30.48=85.30ft

Answer: 85.30ft

Answer:

a

Step-by-step explanation:

Answer:

$2250

Step-by-step explanation:

First we calculate total payment made by her in 3 years time. This can be done by multiplying monthly payments by 36 months (3 years time). Then we deduct the same by the loan balance required to pay off. The difference of both is the interest paid over the three years. As done below

Total Payment = 201.39 x 36 = 7,250.04

Interest Paid = 7,250.04 - 5,000 = 2,250.04

Rounding off to whole number that is $2,250

Answer:

63cm³

Step-by-step explanation:

Volume of a pyramid:

⅓ × base area × height

⅓(7×3)×9

= 63 cm³

Answer:

just do the steps accordingly

Step-by-step explanation:

asdv

Hey there! Welcome to Brainly!

When solving equations for a variable, our goal is to get the variable all by itself on one side of the equation to show what it equals.

In your case, there are two variables, but there is no need to worry! Just pretend like C is another number; you are still solving for x.

So, how do we isolate the x? What we need to do is use inverse operations. If you were to say that x+1=20, how would you figure out what x is? Well, you have to get rid of the one next to the x. We need to subtract this one. But, if we subtract the one, we have to do it to the other side of the equation as well so that it balances it out. This leaves us with x=19.

Now, let's figure out your problem. You have a few more steps. When solving bigger equations, you first undo the constants (terms without a variable) and then the coefficients (numbers with variables attached).

So, the first thing we need to do is add 20 to both sides to cancel out the subtracting on x's side.

C+20=25x-20+20

C+20=25x

Now, we need to divide both sides by 25 to completely isolate the x.

(C+20)÷25=x

In algebra, it is customary to put the x on the left side of the equation, so we will just flip it around.

x=(C+20)÷25

We can further simplify this because the 20 in the numerator and 25 in the denominator are not in simplest form.

[tex]\frac{C+20}{25} =\frac{C+4}{5}[/tex]

Given this information, you should be able to put the steps in order accordingly.

I hope this helps! Have a great day!

Answer: D. 30 year fixed, 10% down at a fixed rate of 5%

Step-by-step explanation:

The total cost of the house is $276,650.

He has in his savings $28,000

10% of $276,650 = $27,665. This will cover for the down payment.

His monthly income is $4,475 and he will like to spend 30% of it on his mortgage = $4,475* 30%= $1,342.50.

From the bal of mortgage =

$276,650 - $27,665 = $248,985

$248,985/ (30*12) = $691.625 $248,985* 5% /12= $1037.45

Total monthly repayment = $1037.45+ 691.63= $1729.08

Answer:

b. 30 year fixed, 5% down at a fixed rate of 6.25%

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

Plug x=-9 in. -9-8+(-9×(-8)) -15=-17+72-15=-17+72-15=40. I hope this helped!

Answer:

40

Step-by-step explanation:

72-32=40

Answer: A movie ticket is $9 while a snack is $2

Step-by-step explanation: We shall let a movie ticket be m while a snack is s. So, from the clues given, if two movie tickets and three snacks cost $24, we can write it as the following expression;

2m + 3s = 24

Also if three movie tickets and four snacks cost $35, we can as well write another expression as follows;

3m + 4s = 35.

Now we have a pair of simultaneous equations which are

2m + 3s = 24 ----------(1)

3m + 4s = 35 ----------(2)

We shall solve this by using the elimination method, since none of the variables has a coefficient of 1. We'll start by multiplying equation (1) by 3 and multiplying equation (2) by 2 (so as to eliminate the m variable)

2m + 3s = 24 -------- x3

3m + 4s = 35 ---------x2

We now arrive at the following

6m + 9s = 72--------(3)

6m + 8s = 70--------(4)

Subtract equation (4) from equation (3) and we arrive at

s = 2

Having determined that s equals 2 we can now substitute for the value of a into equation (1)

2m + 3s = 24

2m + 3(2) = 24

2m + 6 = 24

Subtract 6 from both sides of the equation

2m + 6 - 6 = 24 - 6

2m = 18

Divide both sides of the equation by 2

m= 9

Therefore one movie ticket costs $9 while one snack costs $2

The value of x is 1 in the solution to this system of equation.

Step-by-step explanation:

The system of equation are :

2x+y = -1  ---------(1)

x-y = 4  ---------(2)

Adding the equations (1) and (2),

2x+y = -1

x - y = 4  

3x    = 3  

⇒ 3x = 3

⇒ x=3/3

⇒ x = 1

Answer:

D

Step-by-step explanation:

as 70⁰F is s positive number it is greater than any negative number, to in order to see how far apart it is, you have to subtract the lower number from the higher number hence 70⁰F-(-225⁰F) because the 225⁰F is a negative that you are subtracting, 70⁰+225⁰F could also work, as the two negative cancel out

Answer:

Step-by-step explanation:

-14 is an integer

We can also tell as rational number

as -14 can be written in the form p/q, ie -14/1

For the given triangle, x = 5.1 cm and y = 6.1 cm.

Step-by-step explanation:  

Step 1:  

In the given triangle, the angle is 50°. It is given that the opposite side has a length of y cm and the adjacent side has a length of y cm.   The hypotenuse of the triangle measures 8 cm.

To determine the length of the opposite side of the triangle, we use the sin of the given angle.  

To determine the length of the adjacent side of the triangle, we use the cos of the given angle.  

[tex]sin \theta = \frac{oppositeside}{hypotenuse} , cos \theta = \frac{adjacentside}{hypotenuse}.[/tex]

Step 2:  

In the given triangle,  

The length of the opposite side = y cm,  

The length of the adjacent side = x cm,  

The length of the hypotenuse = 8 cm,  

The angle of the triangle = 50°.

[tex]sin \theta = \frac{oppositeside}{hypotenuse} , sin 50 = \frac{y}{8}.[/tex]

[tex]y = 0.7660 (8) = 6.128.[/tex]

[tex]cos \theta = \frac{adjacentside}{hypotenuse} , cos 50 = \frac{x}{8}.[/tex]

[tex]x = 0.6427 (8) = 5.1416.[/tex]

So x = 5.1416 cm and y = 6.128 cm. Rounding these off to one decimal place, we get x = 5.1 cm and y = 6.1 cm.

Answer:

D. $306.

Step-by-step explanation:

If the dishwasher originally cost $450, then after applying 15% off, its price will be 100% - 15% = 85% of the original price:

[tex]\dfrac{85\%}{100\%} *\$450[/tex]

[tex]0.85*\$450 = \$382.5[/tex]

Thus, during the 15% off sale, the dishwasher will cost $382.5.

Now, the employees of the discount appliance store receive an additional 20% off; therefore, the price of the dishwasher will be 100% - 20% = 80% of $382.5:

[tex]\dfrac{80\%}{100\%} *\$382.5[/tex]

[tex]0.8*\$382.5=\$306[/tex]

Therefore, the employee will purchase the dishwasher at a price of $306, which is choice D.

Final answer:

The employee will pay $306 for the dishwasher, which corresponds to answer choice D.

Explanation:

The subject of this question is Mathematics, and it pertains to the calculation of cumulative discounts on an item. The question is designed to test the student's understanding of how to apply successive percentage discounts to an original price.

Original price of the dishwasher: $450

15% off sale discount: 0.15 × $450 = $67.50

Price after sale discount: $450 - $67.50 = $382.50

Employees receive an additional 20% off the lowest price: 0.20 × $382.50 = $76.50

Price after employee discount: $382.50 - $76.50 = $306

Therefore, the employee will pay $306 for the dishwasher, which corresponds to answer choice D.

Answer:

X=4

Step-by-step explanation:

2x+3=11

Substrate 3 from both sides

2x=11-3

2x=8

Divide both sides by 2

X=4

The value of X is 4.

please see the attached picture for full solution

Hope it helps

Answer:

The numbers are 93, 94, 95 and 96

Step-by-step explanation:

Four consecutive integers add up to 378.

Let the first number be x

Second number will be x+1

Third number will be x+2

And the fourth number will be x+3

These four numbers add up to 378

Which means, we add them up

x + (x+1) + (x+2) + (x+3)=378

x+x+1+x+2+x+3= 378

Collect like terms

4x+6=378

4x= 378-6

4x=372

Divide both sides by 4

x=378/4

x=93

The first number is 93

The second number is x+1 = 93+1= 94

The third number is x+2= 93+2= 95

The fourth number is x+3= 93+3=96

Add up the four numbers

93+94+95+96 = 378

The scale factor for the transformation of the pre-image ABC to A'B'C' shown in the figure is 5/2

How to estimate the scale factor of the dilation

From the question, we have the following parameters that can be used in our computation:

The transformation of the pre-image ABC to A'B'C'

By definition, the scale factor is simply the ratio of sides of two corresponding figures

So, the scale factor (S) would be:

S = A'B'C'/ABC

The actual measurements are given as

ABC = 2

A'B'C' = 5

Substitute the known values into the equation

S = 5/2

Hence, the estimated scale factor is 5/2

Answer:

31/40 has to be added to the sum of 5/8 and 8/5 to get 3​.

Step-by-step explanation:

Solve this equation:  5/8 + 8/5 + f = 3, where f is the number that has to be added to the sum of 5/8 and 8/5.

The LCD of 5/8 and 8/5 is 40; thus, 5/8 + 8/5 = 25/40 + 64/40 = 89/40.

Then 89/40 + f = 120/40 (where 120/40 is equivalent to 3).

Subtracting 89/40 from both sides yields the desired result:

f = (120 - 89)/40 = 31/40

31/40 has to be added to the sum of 5/8 and 8/5 to get 3​.

Answer:

[tex]\frac{31}{40}[/tex]

Step-by-step explanation:

let the unknown be x

[tex]\frac{5}{8} + \frac{8}{5} + x =3[/tex]

[tex]\frac{25+64+40x}{40} = 3[/tex]

cross multiply

25 + 64 + 40x = 3 × 40

89 + 40x = 120

collect like terms

40x = 120 - 89

40x = 31

divide both sides by 40

x = [tex]\frac{31}{40}[/tex]

therefore, [tex]\frac{31}{40}[/tex] has to be added to the sum of 5/8 and 8/5 to get 3

Answer:

9/23

Step-by-step explanation:

Students who play at least 1 sport = 23-8

= 15

Students playing both sports = (11+13)-15

= 24-15

= 9

Probability = 9/23

Alternatively,

A venn diagram could be drawn

The probability that a student chosen randomly from the class plays both basketball and baseball is 39%.

First step

Either (or both) sports =(23 - 8)=15 students play

Both=[11 basketball and 13 baseball)-15]= 9 must play both

Second step

Probability=9/23

Probability=0.39 or 39%

Therefore the probability that a student chosen randomly from the class plays both basketball and baseball is 39%.

Learn more about probability here:https://brainly.com/question/24756209

Answer:

[tex]3y + 2 [/tex]

Step-by-step explanation:

We want to find a common factor for

[tex]3 {y}^{3} + 2 {y}^{2} [/tex]

and

[tex]6 {y}^{4} + 4 {y}^{3} [/tex]

We factor each of them to get;

[tex]3 {y}^{3} + 2 {y}^{2} = {y}^{2} (3y + 2)[/tex]

and

[tex]6 {y}^{4} + 4 {y}^{3} = 2 {y}^{3} (3y + 2)[/tex]

We can observe now that;

The factor common to both expression is

[tex]3y + 2[/tex]

Answer:

<A=<G

so <CAB=<EGF

Step-by-step explanation:

Answer:

B.  

∠CAB and ∠GEF

Answer:

Step-by-step explanation:

Answer:

[tex]-5 \frac{4}{5}[/tex]

Step-by-step explanation:

That's the answer

Answer:

I guess the answer would be -5 and 4/5.

Hope this helps!

Answer:

x = 20

Step-by-step explanation:

When a line is on two lines, it means they are congruent. This means they have the same value.

Answer:

By assuming that shortest feather has a length of 1/4 inches, the length of the longest feather is 2 inches.

Step-by-step explanation:

A mathematical translation of the statement of the problem is:

[tex]x - y = \frac{7}{4}[/tex]

Where x, y represent the lengths of the longest and shortest feathers, respectively. Let assume that length of the shortest feather is 1/4 inches. Then, the length of the longest feather is:

[tex]x = y + \frac{7}{4}[/tex]

[tex]x = 2[/tex]

By assuming that shortest feather has a length of 1/4 inches, the length of the longest feather is 2 inches.

The length of the new feather that made the difference between the longest and shortest feathers is 1 3/4 inches.

The question is asking for the possible length of the new feather that made the difference between the longest and shortest feathers. We know that the difference between these feathers is 1 3/4 inches.

To find the length of the new feather, we need to consider the lengths of the longest and shortest feathers.

Let's say the length of the shortest feather is x inches. Then, the length of the longest feather would be x + 1 3/4 inches. So, the equation would be: (x + 1 3/4) - x = 1 3/4 inches.

Simplifying the equation, we get: 1 3/4 = 1 3/4 inches.

Therefore, the length of the new feather is 1 3/4 inches.