THIS IS FOR AN EXAM NEED HELP!!! Directions: Show all your steps as you solve the following problems. Round the solutions to the nearest hundredth if necessary.


7. On a 40‐point test, Steve received an 80%. How many points did he receive on the test?


8. Of the 8760 hours in a year, most televisions are on for 2190 hours. What percent is this?


9. The population of a town increased from 620 to 700. What is the percent of increase?


10. The population of a small town increased 23% from its population in 2000 to its population in 2003.
If the population of the town in 2000 was 25,314, what was its population in 2003?


11. To control his weight, Joel reduced his calorie intake from 2500 calories to 1950 calories each day. What was his percent of decrease for calorie intake?


12. The sales tax in Whittle City is 7%. How much tax is charged on a purchase of $53?


13. What is the simple interest on $2500 invested at an interest rate of 6% for 2 years?


14. Shawn earned a 5% commission on a $500 sale. How much did he earn?


15. Andrew measured the time it took for an apple to fall 50 feet as 1.95 seconds, but his calculations show that it should be 1.77 seconds. What was his experimental error?

Answer:

139.85-m= 32.15

He originally had 139.85 but spent 107.70

Step-by-step explanation:

For this you can would just subtract 139.85 and 32.15

(139.85-32.15=107.70)

Hope this helps! :)

Answer:

The maximum height is 46.64 feet.

Step-by-step explanation:

If we take the derivative of h whit respect to t and equal this to zero we would find the value of t which corresponds to the maximum h.

So, we have the function h(t):

[tex]h(t)=-16t^{2} + 45t + 15[/tex]

Taking the derivative, we have:

[tex]\frac{dh(t)}{dt}=-32t + 45=0[/tex]

Now, we solve it for t:

[tex]t=\frac{45}{32}=1.4\: s[/tex]

Finally, we put this value of t into the original equation.

[tex]h(t)=-16(1.4)^{2} + 45(1.4) + 15[/tex]

[tex]h_{max}=46.64\: ft[/tex]      

Therefore, the maximum height is 46.64 feet. All the given options are wrong, the one that comes closest is option A.

I hope it helps you!          

Answer:

if two central angles of a circle (or of congruent circles) are congruent, then their intercepted arcs are congruent. (Short form: If central angles congruent, then arcs congruent.) 2. If two arcs of a circle (or of congruent circles) are congruent, then the corresponding central angles are congruent.

tell me if you need a better answer :v

Answer:

A

Step-by-step explanation:

Because the y-intercept which is the last number days that it is crossing y at 3 and A is the only one that has a y-intercept of 3.

And now that you have that, you can work out the gradient which is 2

Answer:

c

Step-by-step explanation:

hope is right! :) if not sorry

Answer:

x = 30

Step-by-step explanation:

Given the expression

-2/3 x - 1 =19

We are to find the value of x

Add 1 to both sides

2/3 x -1 +1 = 19+1

2/3 x =20

Multiply

2/3x × 3 = 20×3

2x = 60

x = 60/2

x = 30.

Hence the value of x is 30

Answer:

60% choose the Museum.

Step-by-step explanation:

Add the students who choose the museum and the students who choose the factory to get 95. You would then need to divide the amount of students who choose the museum by the total amount of students. Your answer would be 0.6, or 60%

60% of the students sixth-graders at Jen's school picked the museum.

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, 57 sixth graders picked the museum and 38 sixth graders picked the factory.

So, the total no. of students is (57 + 38) = 95.

∴ The percentage of the sixth-graders who picked the museum is,

=  (57/95)×100%.

= 60%.

learn more about percentages here :

https://brainly.com/question/24159063

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Answer:

(-2,1)

Step-by-step explanation:

The solution is where the two equations/lines intersect, which is at (-2,1)

Answer:

[tex](\frac{1}{6}) ^{th}[/tex] of area

Step-by-step explanation:

Area occupied by Himalayan panda = [tex]\frac{2}{4}^{th}[/tex]  of area

Area occupied by Giant Panda = [tex]\frac{1}{6} ^{th}[/tex] of area

Area occupied by Albino panda = [tex]=\frac{2}{12} ^{th}[/tex]of area

Area occupied by brown Panda = [tex](1-\frac{2}{4}-\frac{1}{6}-\frac{2}{12}) ^{th}[/tex] of area

= [tex](\frac{12-6-2-2}{12} )^{th}[/tex] of area

= [tex](\frac{2}{12}) ^{th}[/tex]of area

= [tex](\frac{1}{6}) ^{th}[/tex] of area

Answer: 3/8

Step-by-step explanation: 3/8 is the answer

Answer:

There's only one prism? But the answer is 366.

Step-by-step explanation:

39+39+27+27+117+117= 366

Answer:

368

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

Answer:

a. 5

b. 3

c. 3

Step-by-step explanation:

Terms are variables, the number connected to the term is called the coefficient, the variable does not need a coefficient to be considered a term. There are 5 terms in a (9x,4y,7x,8w,t) 3 terms in b (Ab,3a,4b) and 3 terms in c (25a,9bc,8def).

Notice how there are multiple variables in sets b and c. Do not get confused into thinking these are multiple terms, they are one. A term is a single expression with one or more variables that are multiplied but never added or subtracted. Ex: abc is one term but 3 variables.

Answer:

Step-by-step explanation:

Multiply N on both sides

X = P*N

Answer:

[tex]X=PN[/tex]

Step-by-step explanation:

[tex]P=\frac{X}{N}[/tex]

Manipulate the literal equation using inverse operations;

[tex]P=\frac{X}{N}\\*N\\\\PN=X[/tex]

Answer:

y=18-5x

Step-by-step explanation:

Answer:

Step one- Divide both sides by 2

Step two- Add three to both sides

Step three- Divide both sides by 6

Step-by-step explanation:

Hope that helped

Answer:

A. (7, 5)

Step-by-step explanation:

Plug each set into line equation, and A. is the only one that makes both sides equal.

5 - 5 = 6 (7 - 7)

0 = 0

Answer:

[tex]1(16 {n}^{2} - 1)[/tex]

hope its helpful ❤❤❤

THANK YOU.

Answer:

25%

Step-by-step explanation:

difference between 8 and 10 is 2, so 8 would need to increase by 2 to get to 10.

2 is 1/4 of 8, and 1/4 is 25%

answer is 25%

Answer:

25 percent

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

A. they will earn 385 dollars in interest in ten years

B. the accounts balance will be $3,885 after 10 years

Step-by-step explanation:

for part A, there are 2 possible answers, depending on what your looking for, if your looking for the percentage interest, then its 11%, but if your looking for how much they will make off of interest in 10 years, then the answer would be $385.  

Answer:

The slope is: -1/9

Answer:

-1/9

Step-by-step explanation:

You have 2 points, (x1, y1) and (x2, y2). To find slope, do (y2-y1)/(x2-x1)

(10, 7) and (1, 8)

slope is

(8 - 7)/(1 - 10)

= 1/-9

= -1/9

Answer:

$48

75 minutes

Step-by-step explanation:

36/75=0.48 so %1 of her money is 0.48 but if you multiply that by 100 then you get $48, im pretty sure there's an easier way to do that but thats how i got it

18/24=0.75

0.75x100=75

Answer:

232°

Step-by-step explanation:

1. 180-52=128

2. 360-128=232

first you subtract 52 from 180 bc you have to get the angle not included for calculating the whole bearing bc the starting point is the north line. so everything before the north line is not valid bc when you're calculating an angle like this you go from lef to to right, clockwise. in every calculation of bearings you go clockwise. next you just subtract the product you got from 360 and that's it.

hope it didn't sound too complicated.

Answer:

Tommy earned $55

Step-by-step explanation:

Proportions

Tommy and Mark made $88 raking leaves for Mrs. Bopp. They were paid the same rate and Tommy raked for 5 hours while Mark raked for 3 hours.

The total time both raked is 5+3=8 hours. The rate Mrs. Bopp paid them was $88/8 = $11 per hour.

Tommy raked 5 hours, so he earned 5*$11 = $55

Tommy earned $55

Answer:

x = 60°

Step-by-step explanation:

Vertical Angles Theorem states that vertical angles, angles that are opposite each other and formed by two intersecting straight lines, are congruent.

Answer:

X= 60° because vertically opposite angles

Answer:

x= −11 2 + 5 2 √5 or x= −11 2 + −5 2 5

Step-by-step explanation:

Answer:

D on edg

Step-by-step explanation:

Answer:

33.3m^2

Step-by-step explanation:

If Jessica waxes 20 m^2 of the floor in 3/5 of an hour, then;

20m^2 = 3/5 hr

To get the area that she waxes in an hour

x = 1 hr

Divide both expression

20/x = 3/5

3x = 20 * 5

3x = 100

x =100/3

x = 33.3m^2

Hence she can wax 33.3m^2 in an hour

Answer:

$210 , 20 weeks

Step-by-step explanation:

[tex]50 + 8x = 150 + 3x \\ 5x = 100 \\ x = 20[/tex]

Answer:

question #1

7/15

explanation:

2/10 can round down to 1/5

4/20 can also be round down to 2/10 and 1/5

8/40 can be rounded down to 2/10, 4/20 and 1/5

7/15 can't be rounded down

Answer:

1. B

2. i dont know this answer sorry:(

3. 30/140 or in simplest form is 1/7

4.B

Answer:

3/8

Step-by-step explanation:

The question requires that we find the amount of 3/4 cup servings in 1/2 cup of milk

= 3/4 × 1/2

= 3/8

Hence the amount of cup servings is 3/8