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anyanavicka [17]
3 years ago
12

I need a-e to be solved I’m confused still

Mathematics
1 answer:
monitta3 years ago
7 0
A) 36 means that there are 36 students taking Italian and music AT SAME TIME

b) 59 means that there are 59 students taking only music 

c) 48 means that there are 48 students taking neither Italian nor music

d) Italian OR Music = 97 + 36 +59 = 192

e) Do not take Italian: 48 + 59 = 107

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Problem ID: PRABDU8Y<br> Find the value of the variable.<br> 7(m +5) = 21<br> engage
Nitella [24]
Answer: m= -2

7(m+5) = 21

7m + 35 = 21
-35. -35

7m = -14
————-
7. 7

m = -2
8 0
3 years ago
Anyone plz help I need it
son4ous [18]

Answer:

27.5 inches

Step-by-step explanation:

(68.1+11.2+x)/3=35.6

68.1+11.2+x=106.8

79.3+x=106.8

x=27.5

4 0
3 years ago
a car reduced its speed in a ratio of 2 to 3 if the final speed was 90 km per hour then what was the original speed.​
Licemer1 [7]

Answer:

Orginal Speed is 135

Step-by-step explanation:

The ratio of final speed: original speed is

\frac{2}{3\\}

We know that 90 km is it final speed so, we set up a proportion

\frac{2}{3} =90/x

2x=270\\x=135

8 0
2 years ago
If mr. douty goes to the store and purchases 5 equally priced items for a total of $172.45, how much did each item cost individu
natima [27]

Answer:

$34.49

Step-by-step explanation:

To figure out this problem, you would need to divide the total price by the total amount of items you are buying

In this case it is...

172.45/5

=34.49

So the price of each item is approx. $34.49

5 0
1 year ago
Using differential calculus, maximize the volume of a box made of cardboard (top is open) as shown in Figure A. 15, subject to t
lana [24]

The maximum volume of the box is 40√(10/27) cu in.

Here we see that volume is to be maximized

The surface area of the box is 40 sq in

Since the top lid is open, the surface area will be

lb + 2lh + 2bh = 40

Now, the length is equal to the breadth.

Let them be x in

Hence,

x² + 2xh + 2xh = 40

or, 4xh = 40 - x²

or, h = 10/x - x/4

Let f(x) = volume of the box

= lbh

Hence,

f(x) = x²(10/x - x/4)

= 10x - x³/4

differentiating with respect to x and equating it to 0 gives us

f'(x) = 10 - 3x²/4 = 0

or, 3x²/4 = 10

or, x² = 40/3

Hence x will be equal to 2√(10/3)

Now to check whether this value of x will give us the max volume, we will find

f"(2√(10/3))

f"(x) = -3x/2

hence,

f"(2√(10/3)) = -3√(10/3)

Since the above value is negative, volume is maximum for x = 2√(10/3)

Hence volume

= 10 X 2√(10/3)  -  [2√(10/3)]³/4

= 2√(10/3) [10 - 10/3]

= 2√(10/3) X 20/3

= 40√(10/27) cu in

To learn more about Maximization visit

brainly.com/question/14682292

#SPJ4

Complete Question

(Image Attached)

3 0
1 year ago
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