Abigail swims a number of laps, y, for every number of minutes, x. She swims 8 laps in 2 minutes

Answers

Answer 1

Answer:

Answer:

8y-2x

Step-by-step explanation:

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What multiplies to 42 and adds to -27
A line is drawn through (–4, 3) and (4, 3). Which describes whether or not the line represents a direct variation?The line represents a direct variation because = . The line represents a direct variation because it is horizontal. The line does not represent a direct variation because it does not go through the origin. The line does not represent a direct variation because –4(3) ≠ 4(3).

Does anyone know this one ????

Answers

What information is marked in the diagram ?

-- The angles in the lower left corner of each triangle are
right angles, so the triangles are right triangles.

-- The angles in the lower right corner of each triangle are equal.

-- The slanted sides of both triangles are equal. (Since the triangles
are right triangles, the slanted sides are their hypotenees.)

If the hypotenuse and one acute angle of a right triangle are
equal respectively to the hypotenuse and one acute angle of
another right triangle, that's enough to prove that the triangles
are congruent.

true same shape size and line one the side so a itnot be because it not the same

I NEED HELP FAST. DUE TOMORROW

Answers

so it asks you to use the quadratic formula which is when you have ax^2+bx+c=0 then you put it into the quadratic formula which is x=((-b+-√(b^2-4ac))/(2a))

so 8x^2+3x=-7
add 7 to both sides
8x^2+3x+7=0

put into the quadratic formula
8x^2+3x+7=0
ax^2+bx+c=0
x=((-b+-√(b^2-4ac))/(2a))
x=((-3+-√(3^2-4(8)(7)))/(2(8)))
solve inside of square root first
3^2-4(8)(7)=pemdas 9-4(8)(7)=9-224=-215

so -3+-√-215
we know that square root of negative is not real and is immaginary so i must be involved
√-1=i so
-215=i√215
so the answer is A

CONTINUATION
i√215=i(15)=15i
-3+-15i means -3+ or minus 15i
then solve for botom part
2(8)=16
(-3+-15i)/16
so the answers are (-3+15i)/16 and (-3-15i)/16

abby owns a square plot of land. she knows that the area of the plot is between 2200 and 2400 square meters. which of the following answers is a possible value for the side length of the plot of land?

Answers

Answer:

Step-by-step explanation:

The formula for the area of a square is A = s². Plug in each value and see if is in between 2200 and 2400.

A = s²

A = (46)²

A = 2116

A = s²

A = (48)²

A = 2304

A = s²

A = (50)²

A = 2500

A = s²

A = (44)²

A = 1936

The only value that fits in between 220 and 2400 is 48.

The list of multiples for 6 is infinite.
True or False?

Answers

Answer:

True

Step-by-step explanation:

As there are infinite numbers, the list of multiples are also infinite.

Multiples of 6 : 6, 12 , 18 , 24 ..............

Answer:

True; yes.

Step-by-step explanation:

Think about it, what does etc, etc mean? It means repetitive-a pattern, in a sort of way. So here are some multiples of 6:

6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96,102,108,114,120,126,132,138,144,150,156,162,168,174,180,186,192,198,204,210,216,222,228,234,240,246,252,258,264,270,276,282,288,294, etc.

As you can see, all I'm doing is adding 6 to every step I go. So when you say there is an infinite number, then these multiples are going to be infinite.

If school starts at 8:30 a.m. and ends at 3:20 p.m., how long is the school day?5 hours and 10 minutes
11 hours and 50 minutes
6 hours and 50 minutes
6 hours and 10 minutes

Answers

The school day is 6 hours and 50 mins long.

Given to us,

school starts at 8:30 a.m.

ends at 3:20 p.m.,

To understand it easier, Let's round of the time to the nearest values,

8:30 a.m. ≈ 9:00 A.m.

3:20 p.m. ≈ 3:00 p.m.

Now, as we can see at 8:30 a.m. to 9:00 A.m., there is an extra time of 30 mins while at 3:20 p.m. to 3:00 p.m., there is an extra time of 20 mins, therefore we will have an extra time of 50 mins overall if we calculate the time from 9:00 A.M. to 3:00 p.m.

Calculation

dividing the time from 9:00 a.m. to 3:00 p.m. into two parts,

9:00 a.m. to 3:00 p.m = 9:00 a.m. to 12:00 p.m + 12:00 p.m. to 3:00 p.m

From 9:00 a.m. to 12:00 p.m the difference is of 3 hours, and the difference from 12:00 p.m. to 3:00 p.m is also 3 hours.

Therefore, the time between 9:00 a.m. to 3:00 p.m is of six hours but we also have extra 50 mins left.

Hence, the school day is 6 hours and 50 mins long.

Learn more about Time:

brainly.com/question/2570752

School day is 6 hours and 50 minutes long.

NEED HELP!Every evening Jenna empties her pockets
and puts her change in a jar. At the end
of the week she counts her money. One
week she had 50 coins, all of them dimes
and quarters. When she added them up,
she had a total of $10.25.

Let d = number of dimes and
q = number of quarters.

Answers

d + q = 50

10d + 25q = 1025

Multiply the first equation by 10.

10(d + q = 50) --> 10d + 10q = 500

We combine this with the second equation

10d + 25q = 1025
10d + 10q = 500

--------subtract--------
15q = 525 iff
q = 35

Plug in q = 35 into any of the original equations,

d + q = 50
d + 35 = 50 iff
d = 15

There are 15 dimes, and 35 quarters.

the equation would be d+q=$10.25

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