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Anit [1.1K]
3 years ago
14

Can someone please help???? BASIC ALGEBRA problem

Mathematics
1 answer:
user100 [1]3 years ago
7 0

Answer:

3.  9x+5+x-7=25

4.  10x-2=25

5.  10x=27

Step-by-step explanation:

3.  9x+5+x-7=25

4.  10x-2=25

         10x=25+2

5.  10x=27

          x=27÷10

x=2.7

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12 - 3/4 (d + 16) = negative 5
Nutka1998 [239]

Answer: d=20/3

Step By Step:

Step 1, Simplify:

12-3/4(d+16)=-5

(-3/4)d+(12-12)=-5

(-3/4)d=-5

Step 2, Multiply each side by 4/(-3)

(4/-3)*(-3/4)d=(4/-3)*-5

d=20/3

8 0
3 years ago
Read 2 more answers
If 1200 cm2 of material is available to make a box with a square base and an open top, find the largest possible volume of the b
Colt1911 [192]

Answer:

The largest possible volume V is ;

V = l^2 × h

V = 20^2 × 10 = 4000cm^3

Step-by-step explanation:

Given

Volume of a box = length × breadth × height= l×b×h

In this case the box have a square base. i.e l=b

Volume V = l^2 × h

The surface area of a square box

S = 2(lb+lh+bh)

S = 2(l^2 + lh + lh) since l=b

S = 2(l^2 + 2lh)

Given that the box is open top.

S = l^2 + 4lh

And Surface Area of the box is 1200cm^2

1200 = l^2 + 4lh ....1

Making h the subject of formula

h = (1200 - l^2)/4l .....2

Volume is given as

V = l^2 × h

V = l^2 ×(1200 - l^2)/4l

V = (1200l - l^3)/4

the maximum point is at dV/dl = 0

dV/dl = (1200 - 3l^2)/4

dV/dl = (1200 - 3l^2)/4 = 0

3l^2= 1200

l^2 = 1200/3 = 400

l = √400

I = 20cm

Since,

h = (1200 - l^2)/4l

h = (1200 - 20^2)/4×20

h = (800)/80

h = 10cm

The largest possible volume V is ;

V = l^2 × h

V = 20^2 × 10 = 4000cm^3

4 0
3 years ago
Henry is using cardboard to build a box in the shape of a rectangular prism. A net of the box is shown.
Brut [27]

Answer:240 square feet

Step-by-step explanation:

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3 years ago
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The symbol above represents the principle of yin and yang, one of the main concepts in Chinese philosophy. What does the concept
alukav5142 [94]
It represents the<u> balance of opposites</u> and The existence of evil. 
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If the ramp will be 3 feet above the ground and have a 4 foot Base , How long will the ramp be?
FinnZ [79.3K]

Answer:

5 feet long

Step-by-step explanation:

According to the Pythagorean Theorem, a^2 + b^2 = c^2  where "a" and "b" are the two legs of the right triangle and "c" is the hypotenuse.

We are trying to find the part that is at an angle, which is "c". So if we know "a" is "3 and "b" is 4, we can plug the values into the equation.

3^2 + 4^2 = c^2       plug in the values

9  +  16 = c^2           simply the two squared values

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c = 5                          switch the values

6 0
3 years ago
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