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
Tamiku [17]
2 years ago
12

I need help, I am confused.

Mathematics
1 answer:
Ann [662]2 years ago
3 0

Answer:

is 21

Step-by-step explanation:

becuase 7-6 (the lCM) is 1 and 20 + 1 = 21

You might be interested in
The sum of two numbers is 43 . The smaller number is 19 less than the larger number. What are the numbers?
Setler [38]
Let the smaller number be x and the larger number be y.
We can calculate this by using simultaneous equation, aka listing 2 equations out.
From given,
X + y = 43
Let this be equation no. 1
X + 19 = y
Let this number be equation 2.
We can do simultaneous equations either by substitute method or elimination. In this case I'm using substitute.
We can already obtain the value of y (in terms of x) in euqation no. 2, so all we gonna do is to put y into equation 1.
X + x + 19 = 43
Solve this by algebra.
2x = 43 - 19
X = 12
Now we know the exact value of x
Now substitute x = 12 into equation no. 2
12 + 19 = y
Y = 31
So the answer is 12 and 31
7 0
2 years ago
If f(x) = x2 – 3, then f(-1) is equivalent<br> to
zloy xaker [14]

Answer:

negative 5. or -5

Step-by-step explanation:

f(-1)= (-1)2-3

2 times -1= -2

-2-3= -5

f= -5

7 0
3 years ago
Read 2 more answers
Worth 75 points!! Need help with calculus
Keith_Richards [23]
The correct answer is:

2u-v=7(5i-3j)

Therefore, 5, and 3 go inside the box.
4 0
2 years ago
If $x$ is the average of $13$, $-16$, and $6$ and if $y$ is the cube root of $8$, find $x^2 + y^3$. Please Help
Alekssandra [29.7K]

Answer:

If we have a set of N elements:

{x₁, x₂, ..., xₙ}

The mean value (also called the average value) Is calculated as:

Average = (x₁ + x₂ + ... + xₙ)/n

So if x is the average of 13, -16 and 6 ( a total of 3 values)

x will be equal to:

x = (13 + (-16) + 6)/3 = (19 - 16)/3 = 3/3 = 1

x = 1

And we know that:

y = ∛8

Remember that:

2*2 = 4

and

4*2 = 8

then

2*2*2 = 2^3 = 8

then ∛8 = 2.

So we have:

y = ∛8 = 2

Now we can replace these values in the equation:

x^2 + y^3

replacing:

x = 1

y = 2

we get:

1^2 + 2^3 = 1 + 8 = 9

5 0
2 years ago
Lyte wishes to study speed of Reaction Time to press a button in response to the onset of a lamp. The independent variable (V) i
Vaselesa [24]

Complete question:

Dr. Lyte wishes to study speed of Reaction Time to press a button in response to the onset of a lamp. The independent variable (V) is the color of the light produced by the lamp (red, orange, yellow, green, or blue) Since only 10 participants are available, she elects to administer the IV within-subjects with all 10 participants being exposed to all five levels of the color variable. The order of the color of the light presentation is to be counterbalanced. Using concepts from the textbook, why would Dr. Lyte need to use counterbalancing in this scenario?

Answer:

Here,

Independent variable (IV) is: the color of the light produced by the lamp (red, orange, yellow, green, or blue)

We are also told only 10 participants are available.

All 10 participants are being exposed to all five levels of the color variable in the same order.

Counterbalancing is said to be a technique used when establishing task order. It helps prevent introduction if cofounding variables.

Dr. Lyte will need to use counterbalancing technique in this scenario because some of the participants may be unable to understand difference in similar colours. Example some participants may not be able to differentiate between orange and red when the red colour comes after orange.

But using counterbalancing technique, Dr. Lyte can avoid such an error.

6 0
3 years ago
Other questions:
  • Perimeter of a square or a rectangle
    12·2 answers
  • The formula for the area of a triangle is A= bh, where b is the base of the triangle and h is the height of the triangle. What i
    13·1 answer
  • 1....1/4 y + 1 1/2 + 2-1 3/4 y -12<br><br> 2....5=1/5x-3<br><br> 3....1/2 h + 1 from 3/4 h +4
    10·2 answers
  • It took mr. Raleigh a total of 9 hours to drive to his grandpa’s house. He drove m miles before lunch 240 miles after lunch. If
    14·1 answer
  • Given right triangle GYK, what is the value of tan(G)?
    12·2 answers
  • You had 13 of your allowance left on Monday. On Tuesday, you spent 13 of that amount of money. On Wednesday, you spent 13 of wha
    5·1 answer
  • Amer is a clerk. His group medical insurance costs $3,292 a year, of which the
    12·1 answer
  • (4) |-5 + (-2)| _____ |5 + 2| <br> &lt;<br> &gt;<br> =
    14·2 answers
  • What would you expect to happen if a pay rate of $13.50 per hour were offered?
    14·1 answer
  • I will give brainliest! Please Help!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!