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
BabaBlast [244]
2 years ago
8

What is the mean of this data set? 74, 81, 77, 88 *

Mathematics
1 answer:
Yanka [14]2 years ago
4 0
Answer is 160



explanation: add all of them up and divid by how many numbers are in the data set
74+81+77+88=320
then divid 320 by 4 =160




You might be interested in
Jenna sells apples and pears. If 20 apples and 60 pears re sold every hour, there will be 80 pears when all the apples are sold.
lutik1710 [3]

Answer:

There are 1,360 pears.

Step-by-step explanation:

Suppose that there are P pears and A apples.

We know that:

"If 20 apples and 60 pears are sold every hour, there will be 80 pears when all the apples are sold."

Suppose that all of these are sold after N hours, then:

20*N = A

80*N = P - 80

We also know that:

"if 60 apples and 20 pears are sold every hour, there will be 400 pears when all the apples are sold."

60*N = A

20*N = P - 400

Then we have four equations:

20*N = A

80*N = P - 80

60*N = A

20*N = P - 400

From the first one and the second one, we get:

20*N = A = 20*N = P - 400

A = P - 400

Now we have 3 equations:

80*N = P - 80

60*N = A

A = P - 400

Now we can just replace the third equation into the second one, then we get:

60*N = A = P - 400

Now we have two equations:

80*N = P - 80

60*N = P - 400

Now, remember that we want to find the number of pears, so we want to find the value of P.

To do it, we can take the quotient of the two equations, so we get:

(80*N)/(60*N) = (P - 80)/(P - 400)

8/6 = (P - 80)/(P - 400)

Now we can solve this for P

(8/6)*(P - 400) = P - 80

(8/6)*P - (8/6)*400 = P - 80

(8/6)*P - P = (8/6)*400 - 80

(2/6)*P = (8/6)*400 - 80

P = (6/2)*( (8/6)*400 - 80 )

P = 3*( (8/6)*400 - 80 ) = 1,360

There are 1,360 pears.

3 0
2 years ago
The expression 1000(1.1)t represents the value of a $1000 investment that earns 10% interest per year, compounded annually for t
melamori03 [73]
1000(1.1)4
multiply the numbers
$4400
3 0
3 years ago
Read 2 more answers
8) An extremely handsome math teacher is on African
viva [34]

Answer:

One less zebra

Step-by-step explanation:

T        z        l

0       200   220

1         160    175       (subtract 40 from 200  and 45 from 220)

2        120    130

3         80      85

4         40  =  40      <===== lion has zebra lunch before the river is reached

Zdistance = 200 - 40s

Ldistance = 220 - 45 s            where  's' is seconds

8 0
2 years ago
In the diagram shown, line m is parallel to line n . Justine says that ∠3 ∠ 3 and ∠7 ∠ 7 are supplementary angles. Is she correc
agasfer [191]

The correct answer is C.

Because by looking at the diagram you can see that angles 7 and 8 are intersected

6 0
3 years ago
Which figure is the image produced by applying the composition T 0,3 o R0,90 to figure R?
Lyrx [107]

We are given original image R.

It is being translated by (0,3) first and then rotated by a positive angle 90 degrees.

Translation by (0,3) represents (x,y) --> (x, y+3) rule.

Positive 90 degree rotation represents, counterclockwise rotation.

The rule for counterclockwise rotation is (x,y) --> (-y,x).

Therefore, final rule for would be

(x,y) --> ( -y,x+3 )

Let us take a coordinate of R on y-axis as (0,-4).

Now if we apply rule (x,y) --> ( -y,x+3 ) we get

(0,-4)  --> (-(-4), 0+3) = (4,3).

Let us check the figure with coordinate (4,3).

We can clearly see that Figure H has transformed coordinate (4,3).

<h3>Therefore, correct option is first option A. figure H.</h3>
8 0
3 years ago
Other questions:
  • In? gambling, the chances of winning are often written in terms of odds rather than probabilities. The odds of winning is the ra
    13·1 answer
  • Each batch of cookies requires 1 3/5 cups of butter. If Amanda has 8 cups of butter, how many batches of cookies can she bake
    6·1 answer
  • What is 0.6288 rounded to the nearest hundredth? ​
    15·1 answer
  • Can anyone please help me
    9·2 answers
  • X-13&lt;-5 solve the inequality and graph the solution
    15·1 answer
  • I know I haven't been on this app for a long time but can ya'll help me
    12·1 answer
  • 50 × {9 − [(35 − 8) ÷ (1 + 2)]} =
    11·2 answers
  • Multiply (4u - 9s) (4u+ 9s)
    13·1 answer
  • Gemma said, "−6 is closer to 0 than 4 because it is the smaller number."Is Gemma’s statement true or false? Give a math argument
    5·1 answer
  • Find the quadratic equation with integral coefficients having roots 6 and 2.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!