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weqwewe [10]
3 years ago
5

Tina's score on her midterm exam was at the 40th percentile. The grades

Mathematics
1 answer:
telo118 [61]3 years ago
4 0
The value of x is 12.9
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Which equation can be used to solve for x xx in the following diagram? Choose 1 answer: (Choice A) A ( 5 x + 30 ) − 5 x = 90 (5x
Alona [7]

Answer: answer is C

Step-by-step explanation:

for find x
(5x+30)+5x=90
 5x+30+5x=90 add like terms
after,
 10x+30=90
10x+30-30=90-30
 10x/10=60/10
   x = 6

to obtain answer as C
it mean
(5x+30)+5x=90
(5(6)+30)+5(6)=90 we know x=6 so add 6 to x and multiply and obtain answer is correct!
30+30+30=90

7 0
2 years ago
John read the first 114 pages of the novel, which was 3 less than 1/3 of the novel
Nastasia [14]
Let p = total pages in the book 
<span>114 pages of a novel which was 3 pages less than 1/3 </span>
<span>114 was 1/3 total pages - 3 pages </span>
<span>114 = 1/3p - 3</span>
6 0
3 years ago
Read 2 more answers
How many decibels is this? show work​
slavikrds [6]

Answer:

  • <u>115 dB</u>

Explanation:

<u>1. Given equation:</u>

\beta =10log(\frac{I}{I_0})\\\\ I_0=10^{-12}W/m^2

<u>2. Given intensity:</u>

I=0.315W/m^2

<u>3. Decibels</u>

\beta =10log(0.315/10^{-12})\\ \\ \beta =10log(315,000,000,000)\\ \\ \beta =10(11.498)=114.98\approx 115

4 0
3 years ago
Find the quotient 5/18 divided by 2/6
Gnesinka [82]
5/18 diveded by 2/6 is 5/18*6/2 then its 5/18 * 3 which gives 15/18 or 5/6 
7 0
3 years ago
7x+18−6(x+1)−12 Please answer this you get 10 points!!!!
ra1l [238]

Answer:

x

Step-by-step explanation:

7x+18−6(x+1)−12

start out with distributive property

7x+18+(-6x)+(-6)+(-12)

then add the common things together

x+0

answer is just x, or infine answers, you could put in anything for x

7 0
3 years ago
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