1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Varvara68 [4.7K]
3 years ago
5

In science class, Sara needed 8 test tubes for 3 different experiments. The first experiment required 2 test tubes and the other

two experiments required the same number of test tubes. How many test tubes were needed for each of the other two experiments?
Mathematics
1 answer:
astra-53 [7]3 years ago
6 0
8 test tubes
3 experiments

First experiment: 2 tubes

Number of tubes for the other two experiments: 8 - 2 = 6

Number of tubes for each experiment: 6 / 2 = 3

Answer: 3 tests tubes were needed for each of the other two experiments.
You might be interested in
Two submarines starting from the same point cruise for two hours, one covering 30 miles per hour and the other 40 miles per hour
Romashka-Z-Leto [24]

Answer:

20 miles away

Step-by-step explanation:

40*2 = 80

30*2=60

80-60=20

6 0
3 years ago
A person jogs 1/4 mile in 1/16 hour. The person's speed is ______ miles per hour.
Gemiola [76]
It would be 4 miles an hour because just adding one of its self untill the 1/16 is whole would be that 1/4 has made 4 of its self already
8 0
4 years ago
Read 2 more answers
Customers who purchase an aluminum-structured Audi A8 can order an engine in any of three sizes: 2.0L, 2.4L, and 2.8L. Of all Au
sergiy2304 [10]

Answer:

The probability that an Audi A8 car with 2.4L engine is selected given that the car failed emissions test taken within four years of purchase is 0.3589.

Step-by-step explanation:

Let's denote event as follows:

<em>A</em> = an Audi A8 car has a 2.0L engine.

<em>B</em> = an Audi A8 car has a 2.4L engine.

<em>C</em> = an Audi A8 car has a 2.8L engine.

<em>X</em> = an Audi A8 car failed emissions test taken within four years of purchase.

The information provided is:

P(A)=0.45\\P(B)=0.35\\P(C)=0.20\\P(X|A)=0.10\\P(X|B)=0.12\\P(X|C)=0.15

The probability that an Audi A8 car with 2.4L engine is selected given that the car failed emissions test taken within four years of purchase is:

P(B|X)=\frac{P(X|B)P(B)}{P(X)}

Compute the probability of an Audi A*8 car failed emissions test taken within four years of purchase as follows:

P(X)=P(X|A)P(A)+P(X|B)P(B)+P(X|C)P(C)\\=(0.45\times0.10)+(0.35\times0.12)+(0.20\times0.15)\\=0.117

Compute the value of P (B|X) as follows:

P(B|X)=\frac{P(X|B)P(B)}{P(X)}=\frac{0.35\times0.12}{0.117} =0.3589

Thus, the probability that an Audi A8 car with 2.4L engine is selected given that the car failed emissions test taken within four years of purchase is 0.3589.

4 0
4 years ago
Please help me with this geometry question
mixer [17]

Answer:

180+18\sqrt{3}\ in^2.

Step-by-step explanation:

The surface area of right triangular prism is the sum of area of two base triangles and 3 area of side rectangles.

The area of base triangle is

A_{base}=\dfrac{a^2\sqrt{3}}{4},

where a is the length of the side of equilateral triangle. In your case, a=6 inches. Thus,

A_{base}=\dfrac{6^2\cdot\sqrt{3}}{4}=9\sqrt{3}\ in^2.

The area of side rectangle is

A_{side}=ah,

where h is the height of the rectangle. In your case, h=10 inches. Thus,

A_{side}=6\cdot 10=60\ in^2.

Hence, the surface area is

SA=2\cdot 9\sqrt{3}+3\cdot 60=180+18\sqrt{3}\ in^2.

6 0
3 years ago
Consider the following functions. f1(x) = x, f2(x) = x2, f3(x) = 7x − 5x2 g(x) = c1f1(x) + c2f2(x) + c3f3(x) Solve for c1, c2, a
Margaret [11]

Answer:

Therefore the solution is = k{-7,5,1} where k ∈R

Step-by-step explanation:

Given that,

f₁(x) =x

f₂(x)= x²

f₃(x)= 7x - 5x²

Also,

g(x) = c₁f₁(x)+c₂f₂(x)+c₃f₃(x)

Putting the values of f₁(x), f₂(x) and f₃(x).

g(x) = c₁.x+c₂x²+c₃(7x-5x²)

Given condition that g(x)= 0

∴ c₁.x+c₂x²+c₃(7x-5x²)=0

⇒(c₁+7c₃)x +(c₂-5c₃)x² = 0

Comparing the coefficients of x and x²

∴c₁+7c₃=0               and       c₂-5c₃ =0

\Rightarrow c_1 =-7c_3                     \Rightarrow c_2=5c_3

Let c₃= k   [k∈R]  

Then c₁ = -7k   and   c₂=5k

Therefore the solution is = { c₁,c₂,c₃}  

                                           = {-7k, 5k, k}

                                            =k{-7,5,1}

5 0
3 years ago
Other questions:
  • What is the same value as 32 tens the picture blary I don't no why
    13·2 answers
  • A scale model of a building has a height of 18 inches and a length of 14 inches. The height of the real building is 360 feet/ Wh
    9·1 answer
  • Math Analysis Please Help !!!!!!
    11·2 answers
  • What is 3/5 times 1/6 in simplest form
    9·1 answer
  • Which statement describes the lines whose equations are y=1/3x+12 and 6y=2x+6
    11·1 answer
  • How do you write 74171.7 in scientific notation
    9·2 answers
  • A line on the coordinate plane passes through the points (7, -5) and (3, 11). A line that is perpendicular to the first line pas
    14·1 answer
  • 2 less than 1/2 a number n is the quantity of 6 + 1 squared​
    14·2 answers
  • As the manager of an auto repair shop, you decide to compile some statistics on the cars you service. Last week your shop servic
    14·2 answers
  • What is the answer can’t seem to get it right.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!