Ask question

Ask question

All categories

Makovka662 [10]

3 years ago

14

Dean used a triple beam balance to find that the mass of a rock was 40 g and he used a graduate cylinder that measures the volum

e is 5 ml. What is the density?
a
9 m/l
b
10 g/ml
c
6 g/ml
d
8 g/ml

PLSSSSSSSSSSSSSSSSSSS HELP MEEEEEEEEEEEEEEEEE

1 answer:

zhenek [66]3 years ago

4 0

Answer:

Never bwa hahaha JK try d

Step-by-step explanation:

You might be interested in

Help please, hurry

Lady bird [3.3K]

The answer would be B

8 0

3 years ago

The shaded triangle is set inside a pentagon. What type of triangle is the shaded triangle?

SpyIntel [72]

That is a right angled triangle

5 0

3 years ago

Read 2 more answers

The Falcone family is planning to drive from Syracuse, New York to Buffalo, New York. On a map with a scale of

Ad libitum [116K]

Answer:

The Falcones have to travel at 25 m/h to make the trip in 2 hours.

Step-by-step explanation:

In order to find the answer you have to use the formula to calculate speed:

speed=distance/time

distance=50 miles. The stament indicates that the distance between Syracuse and Buffalo is 1 inch and that the map has a scale of inch = 50 miles.

time=2 hours

Now, you can replace the values on the formula:

speed=50 miles/2 hours

speed=25 m/h

According to this, the answer is that the Falcones have to travel at 25 m/h to make the trip in 2 hours.

7 0

3 years ago

Consider a large shipment of 400 refrigerators, of which 40 have defective compressors. If X is the number among 15 randomly sel

Vlad [161]

Answer:

The required probability is 0.94

Step-by-step explanation:

Consider the provided information.

There are 400 refrigerators, of which 40 have defective compressors.

Therefore N = 400 and X = 40

The probability of defective compressors is:

$\frac{40}{400}=0.10$

It is given that If X is the number among 15 randomly selected refrigerators that have defective compressors,

That means n=15

Apply the probability density function.

$P(X=x)=^nC_xp^x(1-p)^{n-x}$

We need to find P(X ≤ 3)

$P(X\leq3) =P(X=0)+P(X=1)+P(X=2)+P(X=3)\\P(X\leq3) =\frac{15!}{15!}(0.1)^0(1-0.1)^{15}+\frac{15!}{14!}(0.1)^1(1-0.1)^{14}+\frac{15!}{13!2!}(0.1)^2(1-0.1)^{13}+\frac{15!}{12!3!}(0.1)^3(1-0.1)^{12}\\$

$P(X\leq3) =0.944444369992\approx 0.94$

Hence, the required probability is 0.94

4 0

3 years ago

Whats 1/7 + 3/4 ?<br> Please help me?

Katen [24]

Answer:

25/28

Step-by-step explanation:

28 is the greatest common factor, found by multiplying 7 by 4 (the denominators)

1/7 = 4/28

3/4 = 21/28

21/28 + 4/28 = 25/28

6 0

3 years ago

Read 2 more answers