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Diano4ka-milaya [45]
3 years ago
8

Evaluate the expression for a = 5 and b = 12.

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
5 0
The answer is c
(12^2)- (4x5)
=124
kati45 [8]3 years ago
5 0
<h3>Given</h3>

d = b² -4a

a = 5, b=12

<h3>Find</h3>

the value of d

<h3>Solution</h3>

Put the numbers where the corresponding letters are, then do the arithmetic.

d = 12² - 4·5

d = 144 - 20

d = 124

The appropriate choice is ...

... C. 124

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Emma has completed 70% of her summer reading list. She has read 14 books so far. How many books are there on her summer reading
REY [17]

The number of books in her summer reading list is = 20

The number of books that has been read by Emma = 14

The percentage of books that has been read by Emma  = 70%

But the percentage of books in Emma summer reading list = 100%

∴ The number of books in her reading list= ˣ

That is ;

           70% = 14

          100% = ˣ

Make ˣ the subject of formula,

            ˣ = 100 × 14 / 70

            ˣ = 20

Learn more here:

brainly.com/question/20766171

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3 years ago
PLEASE HELP GIVING 20 POINTS PLUS BRAINLIEST FOR CORRECT ANSWERS!!!
PtichkaEL [24]

Answer:

Answer will be

A=0.58

B=0.42

5 0
3 years ago
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Mathematics achievement test scores for 300 students had a mean and a variance equal to 550 and 3,600, respectively. If the dist
blondinia [14]

Answer:

number of scores between 490 and 610 is = 0.68 x 300 = 204

Step-by-step explanation:

The concept of Probability distribution is applied as it relates to the Z-scores.

Z = X - Mean /Standard deviation

The detailed steps and appropriate substitution is as shown in the attached file.

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3 years ago
What is the area of this triangle?<br><br> A=bh2
Galina-37 [17]
Alright, so you know that the formula for the area of a triangle is a=bh/2 

First start out by identifying your base and height. 

Base is the side that the shape is "standing on", in this case, that would be 9cm. 

Now, the height is the measurement that is perpendicular (90 degrees to the base), which in this case is 12 cm. 

Now, plug these values into your formula 

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8 0
3 years ago
CAN SOMEONE PLEASE ANSWER THISS ASAP PLEASE
solong [7]

Answer:

Step-by-step explanation:

11.04 = 10(1.02)^n

1.104 = 1.02^n

ln 1.104 = ln 1.02^n

ln 1.104 = n ln 1.02

n = ln 1.104/ ln 1.02

n = 4.99630409516

4.99 can be rounded to 5.

So a reasonable domain would be 0 ≤ x < 5

PART B)

f(0) = 10(1.02)^0

f(0) = 10(1)

f(0) = 10

The y-intercept represents the height of the plant when they began the experiment.

f(1) = 10(1.02)^1

f(1) = 10(1.02)

f(1) = 10.2

(1, 10.2)

f(5) = 10(1.02)^5

f(5) = 10(1.1040808)

f(5) = 11.040808

f(1)=10(1.02)^1

f(1)=10.2

Average rate= (fn2-fn1)/(n2-n1)

                     =11.04-10.2/(5-1)

                    =0.22

the average rate of change of the function f(n) from n = 1 to n = 5 is 0.22.  

8 0
3 years ago
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