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Nuetrik [128]
2 years ago
6

Look at the expression 1/2 (c + 8). Tell whether each statement about the expression is True or False. 50 points if right and if

right ill mark brainiest. here is a picture to help please do it right for test I need right answer right away please try to don't guess please.

Mathematics
2 answers:
serious [3.7K]2 years ago
7 0

Answer:

<h3>a. True</h3>

\frac{1}{2} (c + 8) \: and \:  \frac{c + 8}{2}  \\ are \: equivalent \: expression

<h3>b. True</h3>

\frac{1}{2} (c + 8) \: and \:  \frac{1}{2} c + 4 \\ are \: equivalent \: expression

<h3>c. False</h3>

The \: only \: terms \: in \:  \frac{1}{2} (c + 8) \: are \:  \frac{c}{2}  \: and \: 4, \\ not \: c \: and \: 8

<h3>d. True</h3>

You \: can \: multiply \: c \: and \: 8 \: by   \\ \frac{1}{2}  \: in \:  \frac{1}{2} (c + 8) \: to \: find \: an \\ equivalent \: expression

Alika [10]2 years ago
4 0

Answer:

a)true becuase ×1/2 and ÷2 are doing the same thing

b) true bc they simplified the equation

c)true bc a term is a number or letter and 1/2 is the coefficient

d) true bc thats what the equation is telling you to do

Step-by-step explanation:

I hope that helped

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If x-1/x=5 find x^3+1/x^3=?
ipn [44]

\dfrac{x-1}{x}=5\ \ \ \ /x\neq0\\\\\dfrac{x-1}{x}=\dfrac{5}{1}\ \ \ \ |\text{cross multiply}\\\\5x=x-1\ \ \ \ |-x\\\\5x=1\ \ \ \ |:5\\\\x=0.2\\\\\dfrac{x^3+1}{x^3}=\dfrac{x^3}{x^3}+\dfrac{1}{x^3}=1+\dfrac{1}{x^3}\to1+\dfrac{1}{0.2^3}=1+\dfrac{1}{0.008}\\\\=1+\dfrac{1}{\frac{8}{1,000}}=1+\dfrac{1,000}{8}=1+125=126\\\\\text{Answer:}\ \dfrac{x^3+1}{x^3}=126

5 0
3 years ago
Read 2 more answers
6)<br> Solve.<br> x + 5 = 10<br> A)<br> x = 2<br> B)<br> x = 3<br> 09<br> x = 4<br> D)<br> X = 5
LenaWriter [7]
D is the correct answer
x+5=10: subtract 5 from both sides the 5 will cancel out leaving x=5
x+5=10
-5 -5
x=5
4 0
3 years ago
A rectangular garden must have a perimeter of 150 feet and an area of at least 1200 square feet. Describe the possible lengths o
kipiarov [429]

Answer: 51.86 and 23.14

Step-by-step explanation:

The rectangular garden must have a perimeter of 150 feet

Perimeter of rectangular garden =

2l + 2w=150 -----------1

The rectangular garden must have a perimeter of 150 feet and an area of at least 1200 square feet.

Area of rectangular garden =

l×w= 1200 feet^2 -----------2

From equation 2, l=1200/w

Put l=1200/w in equation 1

2× 1200/w + 2w = 150

(2400/w) +2w = 150

(2400+2w^2)/w =150

2400+2w^2= 150w

2w^2- 150w+2400=0

Using the general formula

w = [-b+-√(b^2-4ac)]/2a

a = 2, b =-150, c=2400

w =[--150+/-√(-150^2-4×2×2400)]/2×2

=[150+/-√(22500-19200)]/4

=[150+/-√3300)]/4

=(150+57.45)/4 or (150-57.45)/4

w= 207.45/4 or 92.55/4

w= 51.86 or w= 23.14

l = 1200/51.86 or l= 1200/23.14

l = 23.14. or l= 51.86

For an area of at least 1200ft^2

The dimensions are 51.86 and 23.14

4 0
3 years ago
A hot air balloon descends from an altitude of 2,000 feet at a constant rate of 90 feet per minute. The graph shows the altitude
liberstina [14]

Answer:

y=90x+2,000

Step-by-step explanation:

90 is the rate of change because the hot air balloon descends 90 feet per minute.

And 2,000 is the starting point because the hot air balloon started the descent at 2,000 feet.

6 0
3 years ago
Read 2 more answers
Please help me! Math
erastova [34]
A. 3/2
b.0.5
c.you have to add them
3 0
3 years ago
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