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3 years ago

Select the best answer for the question. 1. 2.1 + 3.32 – 1.4 = ? A. 4.2 B. 4.02 C. 6.82 D. 5.42

Mathematics

2 answers:

Pavlova-9 [17]3 years ago

8 0

The best answer to that question would be B) 4.02

Mark it as brainliest if I helped you :)

alekssr [168]3 years ago

7 0

B.. 4.02 is the correct answer

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Find two positive numbers satisfying the given requirements. The product is 432 and the sum of the first plus three times the se

kogti [31]

Answer:

Step-by-step explanation:

Let the two positive integers be x and y.

If their product is 432, then

xy = 432 ......... 1

Also if the sum of the first plus three times the second is a minimum, then;

p(x) = x + 3y

From 1;

y = 432/x ..... 3

Substitute 3 into 2;

p(x) = x+3y

p(x)= x + 3(432/x)

p(x) = x + 1296/x

Since the expression is at minimum when dp(x)/dx = 0

dp/dx = 1 + (-1296)/x²

dp/dx = 1 -1296/x²

0 = 1 -1296/x²

0 = (x²-1296)/x²

cross multiply

0 = x²-1296

x² = 1296

x = √1296

x = 36

Since xy = 432

36y = 432

y = 432/36

y = 12

Hence the two positive numbers are 36 and 12

4 0

2 years ago

Find the area of the unfolded box bottom.

Marysya12 [62]

The answer is 150 because
5*30
shortcut: 5*3=15
add the zero from the 50
150 is your answer..

6 0

3 years ago

(11-6)^2+6x2-(3+3)^2<br><br> A. 0<br><br> B. 1<br><br> C. 16<br><br> D. 26

Dahasolnce [82]

Answer: =1

Step-by-step explanation:

$\left(11-6\right)^2+6\cdot \:2-\left(3+3\right)^2$

$=5^2+6\cdot \:2-\left(3+3\right)^2$

$=5^2+6\cdot \:2-6^2$

$=25+6\cdot \:2-6^2$

$=25+6\cdot \:2-36$

$=25+12-36$

$=1$

3 0

2 years ago

PlZ HELP ME I REALLY NEED THE ANSWERS. WILL GIVE BRAINLIEST. THANKYOU SO MUCH!!!

Dovator [93]

Answer:

Answers are listed hoping that they make sense XD

Step-by-step explanation:

1. -0.5

2. 7

3. -23

I just substituted the value given from x and solved for y. I hope that is what the question is asking for.

Hope this helps :)

4 0

2 years ago

5-2 ????=7-5 ???? which value of x is the solution to the above equation?

saw5 [17]

5-2x=7-5x
-2x+5x=7-5
3x=2
X=2/3

8 0

3 years ago