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Lorico [155]
3 years ago
15

Jan's average score after fifteen tests was 82. Her average on the next five tests was 90. What was her average score for all tw

enty tests?
Mathematics
1 answer:
Leokris [45]3 years ago
4 0

Answer:

86

Step-by-step explanation:

82+90=172

172/2 (divided by two because thats how many numbers we added up to get 172)

172/2=86

86 is your answer

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278328 - 20 divided by 29 like yeaaaa
prohojiy [21]

Answer:

278308 ÷ 29

Step-by-step explanation:

9596.828 is your answer

6 0
3 years ago
Read 2 more answers
Mr. Flowers 23 1/4 of land. He is going to 1/3 the acreage. He will sell the rest as 1/2-acrea lots. How many lots will he have
loris [4]

Answer:

  B.  31

Step-by-step explanation:

The acreage Mr. Flowers intends to sell is 2/3 of his total, so is ...

  (2/3)(23 1/4) = (2/3)(93/4) = 31/2 . . . . acres

Divided by 1/2 (which is the size of a lot), we will get the number of lots this will make:

  (31/2)/(1/2) = 31/1 = 31

Mr. Flowers will have 31 lots for sale.

8 0
3 years ago
From 5x^2-6x+8, subtract 3x^2-2x-4?
victus00 [196]
(5x^2-6x+8)-(3x^2-2x-4)=\\5x^2-6x+8-3x^2+2x+4=2x^2-4x+12
8 0
4 years ago
WILL MARK BRAINLIEST ANSWER AND EXPLAIN thank you!!!
scoray [572]

Answer:

I don't think any of those answers represent pi

first of all the circumference of the circle is pi* diameter since the circumference of the circle is 43.96 feet and the diameter is 14 feet the equation would look like this   43.96=14*pi,pi=43.96/14,so that means the pi would obviously be 3.14

I´m pretty sure I´m correct.

3 0
3 years ago
The graph of which function is decreasing over the interval (–4, ∞)?
Phoenix [80]

Step-by-step explanation:

ok, logic

all of them are parabolas

1st and 3rd are opening up, so they defenitely increase, so no

decraseing

the vertex hs to be be at x=-4

y=a(x-h)^2+k

h has to be -4

y=a(x+4)^2+k

the answer is 2nd one or f(x)=-(x+4)^2+4

5 0
3 years ago
Read 2 more answers
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