It takes Zach 15 minutes to walk 7 1/2 blocks to the swimming pool. At this rate, how many blocks can he walk in one minute? Circle the letter of the correct answer.
Dee chose c as the correct answer. What was her error?

What was her error?

Answer:

Immediately after she ran the mile, her heart rate was 100 beats per minute.

Step-by-step explanation:

If Kim ran a mile in Physical Education class, and after one hour of rest her heart rate was 60 beats per minute, having dropped 2/5 of the pace it had immediately after finishing running, to know what was said heart rate it is necessary to perform the following calculation:

2/5 = 0.4

Thus, her heart rate dropped 40%. Since 100-40 is equal to 60, your 60 beats are 60% of the heart rate immediately after running. Therefore, the post-exercise heart rate is derived from the following calculation:

60 = 60

100 = X

((100 x 60) / 60) = X

(6,000 / 60) = X

100 = X

Therefore, her heart rate immediately after running was 100 beats per minute.

Answer: A is the answer

Answer: a

Step-by-step explanation:

edge

Answer:

$1.50 per popsicle and $7.50 for 5 popsicles

Step-by-step explanation:

$4.50 divided by the mumber of posicles so 3 which is 1.5 them multiply by 5 to get the price of 5 popsicles.

Answer:

6+9n=4

its right

Answer:

2. 9x+4y=16

    -9x        -9x

4y=-9x+16

----  ----  ----

4      4      4

y= -9x

     --- +4

      4

4. 4x+3y=-9

  -4x         =4x

     3y=-4x-9

     ---    --- ---

     3       3  3

y= -4x

    ---- - 3

      3

6. 7x-3y=6

  -7x      -7x

       -3y=-7x+6

        ---  ----   ---

       -3    -3    -3

y= 7x

   --- -2

    3

Answer: 2 1/9

Step-by-step explanation: There are 2 1/9‘s left when you see how many can fit into the last 1/3 box. But if the answer is not 2 1/9 than the answer is 2.

Answer:

y= -3

Step-by-step explanation:

Answer:

A:8

Step-by-step explanation:

Because it says how much money was earned from a teacher. And only 1 teacher bought an $8 ticket.

Answer:

tgulriao e jkbal2 3n

Step-by-step explanation:

Answer:

10 minutes

Step-by-step explanation:

We have

0 < π/12 < π/2

and

tan(π/12) = sin(π/12) / cos(π/12)

Both sin(x) and cos(x) are positive for 0 < x < π/2, so we expect tan(π/12) to also be positive.

Recall the double-angle identities for cosine,

cos²(x) = (1 + cos(2x)) / 2

as well as the Pythagorean identity,

tan²(x) = sec²(x) - 1

and by definition,

sec(x) = 1 / cos(x)

Putting everything together, we have

tan(x) = √(1 / cos²(x) - 1)

tan(x) = √(2 / (1 + cos(2x)) - 1)

Let x = π/12. Then 2x = π/6, and cos(π/6) = √3 / 2, so that

tan(π/12) = √(2 / (1 + cos(π/6)) - 1)

tan(π/12) = √(2 / (1 + √3 / 2) - 1)

tan(π/12) = √(4 / (2 + √3) - 1)

tan(π/12) = √(4 / (2 + √3) - (2 + √3) / (2 + √3))

tan(π/12) = √((2 - √3) / (2 + √3))

tan(π/12) = √(7 - 4 √3)

Answer:

X+9=2X

Step-by-step explanation:

the answer is X=9

Answer:

3+3=6 , 4+4=8

Step-by-step explanation: Brainliest pls

9514 1404 393

Answer:

  n² -n +1

Step-by-step explanation:

First differences of the terms of the sequence are ...

  3-1 = 2

  7-3 = 4

  13-7 = 6

  21-13 = 8

Second differences are ...

  4-2 = 2

  6-4 = 2

  8-6 = 2

In a quadratic sequence the coefficient of the squared term is half of the second difference value. Here, that means the squared term will be (2/2)n² = n².

__

We can find the other terms of the quadratic expression by considering the differences between n² and the actual sequence.

The sequence of n² terms is ...

  1, 4, 9, 16, 25

When we subtract these from the actual sequence, we get ...

  1-1 = 0

  3-4 = -1

  7-9 = -2

  13-16 = -3

  21-25 = -4

That is, the amount subtracted from n² is one less than the term number.

The expression for the n-th term is ...

  an = n² -n +1

Answer:

20

Step-by-step explanation:

a negative times anegative is a postive

-10× -2= +20

Answer:

angles 3, 1, 7, 5

Step-by-step explanation:

suplementary angles add up to 180 degrees so

<4 + <3=180

<4 + <1 =180

<4 + <7=180

<4 + <5= 180

Answer:

2,4 or -4,4

Step-by-step explanation:

Your answer is C because that shows the description of what they're asking.

Answer:

A

Step-by-step explanation:

Been a while since i’ve done this but I’ pretty sure since A starts on 2 and goes back 7 (into the negatives for minus 7) it would be A.

Answer:

I hope this helps!

Answer: here are some examples :

8-1 9^

-2 9^

8/9^

4 9^

8/9^

10 9^

-6 x 9^

3 9^5 x 9^-7

Step-by-step explanation: pls mark branliest

Answer:

The answer is 6/49, I hope this helps.

Answer:

Step-by-step explanation:

i think it is 12 for $9.99

Answer:

6743÷110 = 67.43÷1.1........... thanks

Answer:

7 and 1/15

Step-by-step explanation:

4+2 then add two fifths with two thirds (convert them into a mixed number)

Write the mixed number as a sum of the whole number (6+1 1/15)

6+1 is 7

answer is 7 1/15

Answer:

Step-by-step explanation:

A rational number is a number that can be written in the form [tex]\frac{a}{b}[/tex] where b ≠ 0.

In order to properly arrange the numbers on the number line, we need to arrange it in an ascending order.

6/3 = 2

-3/4 = -0.75

1.5 = 1.5

0.25 = 0.25

-5.4 = -1.25

The numbers written in an ascending order will be,

-1.25 = -5/4

-0.75 = -3/4

0.25

1.5

2 = 6/3

Therefore writing this on the number line, we will have it in this order:

-1.25, -0.75, 0.25, 1.5, 2

Answer:

Non Proportional

Step-by-step explanation:

.99(2) = 1.96  1.96(2) = 3.92

That does go, therefore it's non proportional

Hope that makes sense !

Answer:

Its 15

Step-by-step explanation:

20% of 75 is just 15 lol. So i guess 15 Kilograms :)

(brainliest if this is correct for you)