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Trava [24]
3 years ago
9

Please help me with this algebraic expression

Mathematics
1 answer:
Crazy boy [7]3 years ago
7 0
Answer: 5

explanation: the numbers are going up +5 every time
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A pipe is 10 ft long. It need to be cut into pieces that are each 2/5 feet long. How many pieces can be made from the pipe?
e-lub [12.9K]
The answer is 25. To check 10/.4 is 25 and 0.4 equals to 2/5
3 0
3 years ago
It took Hannah 32 minutes to run 8 laps. How many minutes will it take her to run 1 lap?
Anuta_ua [19.1K]
I think the answer would be 4
8 0
3 years ago
Help me pleaseeee!
amm1812

Answer:

Percent is a fraction where the denominator is represented by 100 or 100 parts make one whole

Step-by-step explanation:

3 0
3 years ago
Given 5n² + 6n + 7 = n² - 4n : a. Find the value of the discriminant. b. State the number and type of roots/solutions/zeros.[2 r
Vika [28.1K]
\bf 5n^2+6n+7=n^2-4n\implies 5n^2+6n+7-n^2+4n=0
\\\\\\
4n^2+10n+7=0\\\\
-------------------------------\\\\
\begin{array}{llccll}
&{{ 4}}x^2&{{ +10}}x&{{ +7}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\\\\\\
discriminant\implies b^2-4ac=
\begin{cases}
0&\textit{one solution}\\
positive&\textit{two solutions}\\
negative&\textit{no solution}
\end{cases}

if you get a positive value, that means 2 real solutions
if you get 0, means 1 real solution only
if you get a negative value, is an imaginary root solution, same as saying no solution.
4 0
3 years ago
Find the area and the circumference of a circle with radius 7 ft.
Aleks04 [339]

Answer:

Area is 307.72 ft^2

Circumference is 43.96 ft

Step-by-step explanation:

Area is 2pir^2

Circumference is 2rpi

pi is about 3.14

A=2pi(7)^2

A= 98pi which is about 307.72 ft^2

C= 2(7)pi

C= 14pi which is about 43.96 ft

(I'm not sure whether they want the answer left in terms of pi or not)

4 0
3 years ago
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