ou swim in a 100-meter race. Your best time is 59.48 seconds. You want to swim the race in 51.55 seconds. How much will you need to trim from your best time?

Answer:

What is step 6

Step-by-step explanation:

Answer:

6. -3

7. 16

8. -39

Step-by-step explanation:

Answer:

x = 18/25, y = -198/25

Step-by-step explanation:

Given the system of equations:

2x – y = 13x

-3x + 2y= -18

You can combine these two equations effectively by multiplying the first equation by 2, and adding because -2y and 2y will cancel out when added. So you will be left with only x terms

( 2x - y = 13x ) × 2

+ -3x + 2y = -18

________________

2(2x) - 3x + 2(-y) + 2y = 2(13x) - 18

4x - 3x - 2y + 2y = 26x - 18

x + 0 = 26x - 18

x = 26x - 18

________________

[Then use the properties of equality to simplify the expressions in the equation to derive the value of x]

x - x = 26x - 18 - x (subtraction property of equality)

0 = 25x - 18

0 + 18 = 25x - 18 + 18 (addition property of equality)

18 = 25x

18 / 25 = 25x / 25 (division property of equality)

18 / 25 = x

x = 18 / 25 (symmetric property of equality)

_______________

Now with the value of x, we can find the value of y by substituting the value of x into the variables of the top equation {2x – y = 13x} because this involves the simpliest steps.

Given x = 18 / 25.

2x – y = 13x → 2x – y + y = 13x + y → 2x = 13x + y → 2x – 13x = 13x + y – 13x → -11x = y → y = -11x.

Now that we know y = -11x, y = -11(18/25) which is - (11 × 18) / 25 = -198/25

Answer:

0.175

Step-by-step explanation:

8/1.4 = 0.175 which is how many each will have

Answer:

The answer is first one.

Hope it helps uh!

Answer:

Step-by-step explanation:

1000*4%= 40

10000*6%=600

640

Answer:

1000*4%

10000*6%

640

Step-by-step explanation:

Hope this helps

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

51×1

17x1

=51/17

Simplifying 51/17, the answer is

=3

Answer:

22.88 or 23

Step-by-step explanation:

2.6 * 8.8 = 22.88, rounded is 23

I hope this helped, please mark Brainliest, thank you!

Answer:

One-fourth(90)

Step-by-step explanation:

One-fourth is closer to 26% and 88 is closer to 90.

Hope this helped

Answer:

6.2

Step-by-step explanation:

6.231 to the 10th

Answer:

He will spend about $6.23

Step-by-step explanation:

You just multiply 9.3 and .67 and get 6.231 rounded to 6.23

Answer:

$22.50

Step-by-step explanation:

if 3 bags of cat food = 13.50, divide 13.5 by 3 to get the cost of one bag, which is $4.50.

since hes getting 5, we can use 13.50 once and then the price of one bag (4.5) twice for the other two.

so that would be 13.5 + 4.5 + 4.5 = $22.50

hope this helped :)

Answer:

cost of three bags of cat food = 13.50

cost of 1 cat food = 13.50/3 = 4.50

cost of 5 cat food = 4.50*5 = 22.5

Step-by-step explanation:

Answer:

30% profit

Step-by-step explanation:

The amount by which the shopkeeper reduced the advertised selling price = 20%

The resulting profit over the cost price = 4%

Let x represent the initial advertised selling price, and let y represent the new selling price, and let c represent the cost price, we have;

x - 20% of x = y

x - x × 20/100 = y

0.8·x = y

y = c + 4% of c = 1.04·c

∴ 0.8·x = 1.04·c

x = 1.04·c/0.8 = 1.3·c

x = 1.3·c = c + 0.3·c = c + 30% of c

x = c + 30% of c

From which we have that the initial advertised selling price, x = The cost price + 30% of the  cost price

Therefore, the initial advertised selling price = The cost price + 30%profit on   cost price.

The shopkeeper would have made 30% profit if the dress had then been sold at the original selling price.

Answer:

-4/3

Step-by-step explanation:

The line is decreasing so the slope will be negative. The slope formula is  [ y2-y1/x2-x1 ].

-1-3/1-(-2)

-4/3

Best of Luck!

Answer:

the answer is D .I think I may not be wrong

Answer:

35 mph

Step-by-step explanation:

The answer should be the average speed it takes to drive, so you would find the average of the speed to go to A with the speed to go to B. You already have the two answers for part A and B, so you would add them, then divide them by 2. It would look like this:

[tex]\frac{30+40}{2} =\frac{70}{2} =35[/tex]

So it would be 35 mph

Answer:

A

Step-by-step explanation:

7%=0.07

27,000 MULTIPLIED by 0.07=1890

Alice paid: 25,110

Answer:

to read 16pages need 46 minutes

Answer:

the answer is 58.32

Step-by-step explanation:

Answer:

math is torture

Step-by-step explanation:

Answer: 23

Step-by-step explanation:

Answer:

5

Step-by-step explanation

2 + 5 is 7 which equals 1 person 7 x 5 = 35 which means their will be 5 people per group because 30 {room cost} plus 35 is 65

what do i mean?

2 + 5 IS 1 person and 2 plus 5 is 7 so the remaining money they have would be 35 because 65 minus 30 is 35 so i divid 35 by 7 which brings 5 people

Answer:

7

Step-by-step explanation:

Answer:

S=3

Step-by-step explanation:

4(2(3)-3)=3((3)+1)

4(6-3)=3(4)

12=12

OR

8s-12=3s+3

5s-12=3

5s=15

s=3

Answer:s=3

Step-by-step explanation:

So the first thing that you do is the distributive property on both sides and then you combine like terms. After that you put the variable all on on side consonants. Then you divide and you get s.

Answer:

3 1/6

Step-by-step explanation:

5 1/2 =  5 3/6

         -

2 1/3 =  2 2/6

            _____

              3 1/6

Answer:

63.6 m^2

Step-by-step explanation:

A = (pi)r^2

r = d/2 = 9 m / 2 = 4.5 m

A = (3.142)(4.5 m)^2

A = 63.6 m^2

Answer:

y= -6x+23

Step-by-step explanation:

perpendicular: opposite signs and reciprocal

m= 1/6 and y-intercept = 23

y= -6x+23

Answer:

1.) 9.32

2.) 4.82

Step-by-step explanation:

neat trick i learned that really helps: SOH-CAH-TOA

Sine (opposite, hypotenuse), Cosine (Adjacent, Hypotenuse), Tangent (Opposite, Adjacent)

1.)

sin(21) = x/26    <----------- multiply by 26 to get x by itself

26*sin(21) = x  <----------- multiply 26 by sin(21)

9.32 = x      <------ rounded answer

2.)

cos(64) = x/11      <------------ multiply by 11 to get x by itself

11*cos(64) = x      <---------------- multiply 11 by cos(64)

4.82 = x      <-------- rounded answer

Answer:

Please no, not morgz

Step-by-step explanation:

Im begging you

Answer:

What's the question?

Step-by-step explanation:

Oh shi................

Welp Morgz is gonna kill us