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
gayaneshka [121]
3 years ago
6

NEED HELP ASAP PLEASE HELP

Mathematics
2 answers:
Ivenika [448]3 years ago
8 0

Answer:

I think it's A

Step-by-step explanation:

I'm sorry if i'm wrong

Tresset [83]3 years ago
3 0

Answer: Choice C) 0.000042

4.2 \times 10^{-5} = 0.000042

There are four zeros between the decimal point and the 4.

==========================================

Explanation:

The exponent -5 means we move the decimal point five spaces to the left to go from 4.2 to 0.000042

If the exponent was positive 5, then we would move the decimal point five spaces to the right.

You might be interested in
A building contains two elevators, one fast and one slow. The average waiting time for the slow elevator is 3 min. and the avera
cupoosta [38]

Answer: The expected waiting time is 1\dfrac{2}{3}\ min

Step-by-step explanation:

Since we have given that

Average waiting time for slow elevator = 3 min

Average waiting time for fast elevator = 1 min

probability that a person choose the fast elevator = \dfrac{2}{3}

Probability that a person choose the slow elevator = \dfrac{1}{3}

So, the expected waiting time would be

E[x]=\sum xp(x)=3\times \dfrac{1}{3}+1\times \dfrac{2}{3}\\\\=1+\dfrac{2}{3}\\\\=\dfrac{3+2}{3}\\\\=\dfrac{5}{3}\\\\=1\dfrac{2}{3}\ min

Hence, the expected waiting time is 1\dfrac{2}{3}\ min

8 0
3 years ago
the height of a triangle is 7 cm longer than its base. The area of the triangle is 60 cm². What is the base of the triangle?
Digiron [165]
Base is 8cm, and height is 15 cm
4 0
3 years ago
Read 2 more answers
Given that x= –1/2 and y = 4 , evaluate 3x²y + xy²​
zvonat [6]

Answer:

-5

Step-by-step explanation:

3x²y + xy²​

Let x = -1/2 and y = 4

3(-1/2)^2 (4) + (-1/2) (4)^2

Exponents first

3(1/4) (4) + (-1/2) 16

Multiply

3 - 8

Subtract

-5

​

7 0
3 years ago
Read 2 more answers
Negative -5/8 - 1/2= <br> I wanna know fast anyone??
alexira [117]

Answer" -9/8

by-step explanation:

-5/8 - 1/2 = -9/8

Simplify: -9/8= 1  1/8

3 0
3 years ago
Robert slices a large loaf of bread to make 12 sandwiches. He made 3 turkey sandwiches and 5 veggie sandwiches. The rest are ham
lions [1.4K]
We already know that there are 12 sandwiches.

If there are 3 turkey and 5 veggie then there's 8 out of 12 sandwiches that aren't ham.

12 sandwiches - 8 non-ham sandwiches = 4 ham sandwiches

Now we know there are 4/12 ham sandwiches

We need to simplify this now.
4/12 can be divided by 4

4 goes into 4 1 time and 4 goes into 12 3 times making the answer 1/3

1/3 of the sandwiches are ham.
3 0
3 years ago
Other questions:
  • Find the z-score for the standard normal distribution where: P (z&lt; -a) = 0.2451
    12·1 answer
  • Please help area and perimeter of functions
    14·2 answers
  • 5a+7=4a+4 solve for a.​
    15·2 answers
  • The radio of boys to girls is 3:4. There were 60 girls at the dance. How many boys were at the dance?
    13·2 answers
  • Check image I’ll give brainliest to first correct answer
    9·2 answers
  • Find f(-2) for the function f(x) = 3x2 – 2x + 7.
    8·1 answer
  • Pls help and show workings <br> Due ASAP
    13·1 answer
  • PLEASE HELP ITS DUE SOIN AND I DONT KNOW HOW TO ANSWER​
    6·1 answer
  • Synthetic Substitution <br><br><br> (x+y)(x^2-xy+y^2)
    7·1 answer
  • What is the measure of x?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!