In science class, Matt tried to find the mass of a penny. A penny is known to have a mass of 2.5 g. Matt overestimated the weight of the penny and had a percent error of 4%. How much did Matt think the penny weighed?

Answer:

A, C, E for the first one; B, C, E for the second one; B and E for the last one

Step-by-step explanation:

Answer: B

Step-by-step explanation: The formula for the area of a circle is A = πr2. The way you find r is dividing the diameter by 2. So B is the answer.

Answer:

4 years

Step-by-step explanation:

Interest (I) = $ 100

r = 3.8 %

P = $ 700

t = ?

[tex]t = \frac{I *100}{P*r}\\\\t = \frac{100 * 100}{700 * 3.8}\\\\t = \frac{100 * 100}{70 * 38}\\\\t = 3.75[/tex]

t = 4 years

Answer:

Volume is about 26.5 in^3

Step-by-step explanation:

The volume = 4/3 pi r^3   where r = the radius.

the radius = 1/2 diameter =  1/2 * 3.7  = 1.85 ins.

So V = 4/3 * 3.14 * 1.85^3

= 26.5084

Answer:

7/20

Step-by-step explanation:

Just multiply the numerators with each other and then multiply the denominators

Answer:

5/8

Step-by-step explanation:

Answer:I cant do this sorry but good luck!

Step-by-step explanation:

Answer:

x = 2.8 units

Step-by-step explanation:

volume = width x length x height

23.52 = 1.5 x 5.6 x height

height = 23.52/(1.5 x 5.6) = 23.52/8.4 = 2.8 units

Answer:

first one is 90

second one is c

Step-by-step explanation:

First one

2·(3·3+6·3+6·3)=90

second one

if he puts in ten then takes out ten he just took out everything

Answer:

12 square feet for question 1

and for question number 2 the  2

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

all three equations show that the amount of variable c's there are is 4, and the amount of the number 9 there is is 4

Answer:

The y intercept is kinda in the middle but if it was approximate then probably 4 and the equation would be y= 1x +4

Step-by-step explanation:

The y intercept is 4 because that where the line hits on the y axis and the x would be 1 because it goes up one and over one to the next dot. If i were to guess i think how many months for 13 matches it might be around 3 but sry if that's not right

Answer: -13

Step-by-step explanation: What you would do is you would take 4+2 and you'll get 6 and the opposite of that is -6 and then you would add -7+ -6 to get -13

Answer:

50% 4 red marbles 8 total marbles

Step-by-step explanation:

Answer:

1/6

Step-by-step explanation:

The answer is 2/12 but you simplify which gives you 1/6

Answer:

thxs ig?

Step-by-step explanation:

ugh i hate those ppl with the links

anyways

1) 16t^2 = 144

4t = 12

t = 3

2) x^2 + 10x + 25 = 9

x^2 + 10x + 16 = 0

(x+8)(x+2) = 0

x = -8 or -2

Hope this helps :)

Answer:

ANSWER TO 1 is t = 3

ANSWER TO 2 is x = -2

Step-by-step explanation:

2) x^2 + 10x + 25 = 9

x^2 + 10x + 16 = 0

(x+8)(x+2) = 0

x=-2

1) 16t^2 = 144

4t = 12

t=3

Answer:

38.5

Step-by-step explanation:

Answer:

f

Step-by-step explanation:

Answer:

360 ft

Step-by-step explanation:

There are 4 plates on a baseball field including the home plate. Mulitply that by the distance: 90ft.

4 x 90 = 360

Answer:

"distance between bases on a baseball field is 90 feet"   so, a home run is:

   home to first bast = 90

   first base to second base = 90

   second base to third base = 90

   third base to home plate = 90

 distance for a home run =      p         [note: this is the perimeter a baseball diamond]

Now, "three players hit home runs " and "What's the total distance the players run?"

  So, calculate 3p to get that answer.

Step-by-step explanation:

so basically it's a square, 90 ft on each side.

Perimeter = 4(side length) = 360 ft per player

Answer:

120m^2

Step-by-step explanation:

Let's start with the bottom. Since the height, base and width are all 4m, we can say that one square = 16 m^2.

There are 5 squares (counting the bottom), and 16 * 5 = 80.

Now the top triangles. We can split the bigger triangle in half. The base is 4m, you can tell from the bottom. To find the area of the triangle, split 4 in half to find the base of the smaller triangles, which equals 2.

Now for the smaller triangles, the base is 2 and the height is 5. We know that to find a triangle's area, you do (b * h)/2, which is (2*5)/2 = 5.

The big triangle is 2 of the small triangles, so you can multiply the smaller triangle's area by 2, which is 5 * 2 = 10.

There are 4 identical triangles at the top-- so 10 * 4 = 40.

80 + 40 = 120.

Hope this helps!

Answer:

B. 254.3 m^2

area of a circle= pi×radius^2

A= pi×9^2

18/2=9

The radius is 9.

A= pi*r^2

A=3.14 x 9^2

A=3.14 x 81

A=254.34

Therefore, the answer is B

Answer:4/5

Step-by-step explanation:

I think it's 4/5 because the number 3 is only one number of 5. And if you subtract 5-1, you'll get 4.

Answer:

−0.78r − 5.67

Step-by-step explanation:

Answer: Hope you feel better bub. ⊂(・﹏・⊂)

Answer:

1.6

Step-by-step explanation:

The mean deviation is a measure of dispersion, A measure of by how much the values in the data set are likely to differ from their mean. The absolute value is used to avoid deviations with opposite signs cancelling each other out.

Answer:

6 Is the m.a.d of it

Answer:

A

Step-by-step explanation:

Honestly, I’m not sure, but it’s the only one that made the most sense to me.

Hopefully This Helps, good luck!

Answer:

B i think

Step-by-step explanation: