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A student answered 72 problems on a test correctly and received a grade 83%. How many problems were on the test, if all the problems were worth the
same number of points? (Round to the nearest wholenumber)

Answer:

1:00 PM

Step-by-step explanation:

8:30 AM + 2.35h + 1.30h + 25m = 1:00 PM

Answer:

[tex]a_n=-2-5n[/tex]

Step-by-step explanation:

Arithmetic Sequences

The arithmetic sequences are those where any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.

The equation to calculate the nth term of an arithmetic sequence is:

[tex]a_n=a_1+(n-1)r[/tex]

Where

an = nth term

a1 = first term

r   = common difference

n  = number of the term

We are given the sequence

-7 -12 -17 -22 -27 ...

The first term of this sequence is a1=-7. We can calculate the common difference by subtracting two consecutive terms:

r = -12 - (-7) = -12 + 7 = -5

The nth term is:

[tex]a_n=-7+(n-1)(-5)[/tex]

Multiplying:

[tex]a_n=-7-5n+5[/tex]

Simplifying:

[tex]\boxed{a_n=-2-5n}[/tex]

Answer:

20

Step-by-step explanation:

The area of a circle is equal to pi*radius^2

We can then write this as

314.1592=π*r^2

We then divide pi to get

100=r^2

take the square root and you find that the radius equals around 10

The diameter is always equal to the radius times two which means that the diameter is 20

hope this helps

Answer:

StartFraction 1 over 10 end fraction

Answer:

is one over ten startfraction

Step-by-step explanation:

Answer:

[tex]4x - 22 = 9x + 2 - 8x \\ 4x - 22 = x + 2 \\ 4x - x = 2 + 22 \\ 3x = 24 \\ x = 8[/tex]

Answer:

81.25

Step-by-step explanation:

Answer:

81.081%

Step-by-step explanation:

Put 117 into the numerator's place and 144.3 into the denominator's. 117/144.3= .810810... Move the decimal two places to the right to get your percentage.

Answer:

Terry had £780 initially and Faye had £1300

Step-by-step explanation:

System of Equations

We'll call the following variables:

x = Terry's balance in his bank account

y = Faye's balance in her bank account

The initial relation between them is:

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

Cross-multiplying:

5x = 3y        [1]

If Terry put £220 in his account he had x+220 and if Faye withdrew £300 from her account, she had y-300. Both quantities are equal, thus

x + 220 = y - 300

Subtracting 220:

x = y - 520         [2]

Substituting in [1]

5(y - 520) = 3y

Multiplying:

5y - 2600 = 3y

Adding 2600 and subtracting 3y:

2y = 2600

Dividing by 2:

y = 1300

From [2]:

x = 1300 - 520

x = 780

Terry had £780 initially and Faye had £1300

Answer:

7800 meters and 1600 miligrams

hope you feel better

Answer:

Step-by-step explanation:

Farad hiked 7.8 kilometers or 7800 meters

Humming bird ways 1600 milligrams

Hope this helps

Answer:

25/14

Step-by-step explanation:

Answer:

7/2

Step-by-step explanation:

Answer:

10 hours

Step-by-step explanation:

130-50-80

80 divided by 8 equals 10

Answer:

Hope this helps:)

Answer:

Step-by-step explanation:

hope it helps :)

Answer:

m=-7

Step-by-step explanation:

4+4+20m=-132

8+20m=-132

20m=-132-8

20m=-140

m=-7

move all terms to the left side and set equals to zero. then set each factor equal to zero

Answer:

x = 60

Step-by-step explanation:

The Factor of sides is 1.5 and I found that out by dividing one side to the identical side on the other triangle then you multiply the bottom side by 1.5 to get the answer

please give brainliest

Answer:

1. The equation to solve this equations is:

= 3x = 231

2. The three integers are 77, 78 and 79.

Step-by-step explanation:

The sum of 3 consecutive integers = 234

let x = first integer

let x+1 = second integer

let x+2 = third integer

Therefore,

= x + x + 1 + x + 2 = 234

simplified to:

= 3x = 231

b) Adding three consecutive numbers adds the smaller number to itself three times, and then adding 1 for the second number, and two for the third number. So, the sum of the three consecutive numbers is divisible by 3.  Therefore, to get the second (or middle) number, divide the total by 3, and then subtract 1 and add 2 to get the first and the third numbers, respectively.

Answer:thanks

Step-by-step explanation:

Answer:

24

Step-by-step explanation:

Answer:

[tex]10x^{2}[/tex] + 20x + 50

Step-by-step explanation:

[tex]a^{2} + b^{2} = c^{2} \\(x+7)^{2} + (3x+1)^{2} = 10x^{2} + 20x + 50[/tex]

Answer:

Answer is on the pic

Step-by-step explanation:

I hope it's helpful!

Answer: A and D

Step-by-step explanation:

The diagonals are perpendicular since,

- HJ ⊥ KL

- Slope of HJ x Slope of KL = -1

Options A and D are the correct answer.

Parallelogram is a quadrilateral that has two pairs of parallel sides.

In a parallelogram, opposite sides and angles are equal.

The adjacent angles add up to 180 degrees.

We have,

HJKL is a quadrilateral.

The diagonals are HJ and KL.

To show that the diagonals are perpendicular,

We can have the following.

- HJ ⊥ KL _____(1)

- Slope of HJ x Slope of KL = -1 _____(2)

Thus,

The diagonals are perpendicular since,

- HJ ⊥ KL

- Slope of HJ x Slope of KL = -1

Learn more about parallelograms here:

https://brainly.com/question/1563728

#SPJ2

Answer:

701.64

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

they are vertical angles so they are equal

6y+40=10y-32

6y+40+32=10y-32+32

6y+72=10y

6y-6y+72=10y-6y

72=4y

72/4=4y/4

18=y

Answer:

225 ft squared

Step-by-step explanation:

Area is length by width and since its a square the length and width are the same.

15 x 15 = 225

Answer:

225 ft squared

Step-by-step explanation:

area is L x W, area of a square is s^2

so 15ft x 15ft = 225 ft squared

Answer:

Step-by-step explanation:

Number Square Root (√)

12           3.464

Answer:

75 + 25d > 250

d > 7

Step-by-step explanation:

Number of signatures needed : > 250

Amount of signatures ready = 75

Exoected number of signatures per day = 25

Number of days, d, needed signatures will be collected ;

Number of ready signatures + (expected number of signatures per day * number of days) > number of signatures needed

Mathematically,

75 + 25d > 250

25d > 250 - 75

25d > 175

d > 175 / 25

d > 7

Answer:

Step-by-step explanation:

Yes