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Elanso [62]
3 years ago
7

An instructor has graded 23 exam papers submitted by students in a class of 24 students, and the average so far is 75. (The maxi

mum possible score is 100.) How high would the score on the last paper have to be to raise the class average by 1 point
Mathematics
1 answer:
DedPeter [7]3 years ago
6 0

Answer: The last paper has to be 99 over 100 to move the class average by 1 point

Step-by-step explanation:

total points on the 23 exams: 23*75 = 1725

-----

For 24 papers to average 76 points you need 24*76= 1824

---

Score on the final paper would have to be (1824-1725) = 99

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2x+5y=10<br><br>x intercept=<br><br>y intercept=​
Stells [14]

Answer:

x= 0/-8

y= 0/5

Step-by-step explanation:

Brain-List?

5 0
3 years ago
Simplify the expression by combining like terms. 22+5−4+7−8
nikklg [1K]

Answer:

22

Step-by-step explanation:

27-4+7-8=

23+7-8=

30-8=

22

3 0
3 years ago
A density curve for all the possible weights between 0 pounds and 10 pounds is in the shape of a rectangle. What is the value of
Evgesh-ka [11]
The total area under the curve must equal 1. Let the value of the density curve be x. Then 10x = 1. Therefore x = 1/10 or 0.1.
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8 0
3 years ago
Read 2 more answers
If tile costs $8.50 per square foot, how much does it cost per inch?
Sphinxa [80]

Answer:

$0.06 per square inch

Step-by-step explanation:

The question should be:

<em>"If tile costs $8.50 per square foot, how much does it cost per square inch?"</em>

<em />

To solve this, we basically need a conversion from feet to inches. BUT 2 times, since we are talking about "square feet" and "square inches".

We know 1 feet = 12 inches

Also, since we are going from square feet to square inches [big to small], we have to divide TWICE.

Thus, we will have:

\frac{8.5}{12*12}

We are dividing 8.5 (the cost) by 12, 2 times since we want square feet in square inches. The answer is:

\frac{8.5}{12*12}=0.06

So, tile costs $0.06 per square inch

6 0
3 years ago
Jose trabaja en una capinteria su jhefe le `pidio que cortara 9metros en cuatro partes de la misma longitud cuantoi deberia medi
Anna11 [10]

Responder:

2 1/4 m; 225 cm

Explicación paso a paso:

Dado:

Cortar 9 metros en 4 partes de la misma longitud;

Por lo tanto,

9 metros / 4

= 2,25 metros

Por lo tanto, cada varilla será 2.25 = 2 1/4 m

En cm;

1 m = 100 cm

2,25 metros = x

x = 100 * 2,25

x = 225 cm

5 0
3 years ago
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