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oksano4ka [1.4K]
3 years ago
11

Solve the equation. If necessary, round your answer to the nearest tenth.

Mathematics
1 answer:
Sergio039 [100]3 years ago
8 0
X^2=121/4
x^2=30.25
x=+/- 5.5
so B
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The sum of three consecutive odd numbers is 51. Find the numbers. Show your work and
Pachacha [2.7K]
15,17,19 are all odd numbers and add to 51
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2 years ago
A rectangular parking lot must have a perimeter of 440 feet and an area of at least 8000 square feet. Describe the possible leng
tangare [24]

Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

A rectangular parking lot must have a perimeter of 440 feet

Perimeter of rectangular plot =2(l+b)=2(x+y)=440

2(x+y)=440

x+y=220

y=220-x

We are also given that an area of at least 8000 square feet.

So, xy \leq 8000

So,x(220-x) \leq 8000

220x-x^2 \leq 8000

So,220x-x^2 = 8000\\-x^2+220x-8000=0

General quadratic equation : ax^2+bx+c=0

Formula : x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

x=\frac{-220 \pm \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=\frac{-220 + \sqrt{220^2-4(-1)(-8000)}}{2(-1)} , \frac{-220 - \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=45.96,174.031

So, The possible parking lengths are 45.96 feet and 174.031 feet

3 0
3 years ago
Someone help me please!!!
dusya [7]

Answer:

Its upside down.

Step-by-step explanation:

8 0
3 years ago
Liz ran 4/5 km on Monday and 56 KM on Tuesday  about how much did she run?
Dimas [21]

Answer:

56.8

Step-by-step explanation:

4/5+56 =56.8

very sorry if this is wrong

3 0
2 years ago
Read 2 more answers
What is 3 multiplied by 1 8/11 as a mixed number or fraction
marishachu [46]

Answer:

57/11 or 5 2/11

Step-by-step explanation:

Convert 1 8/11 into an improper fraction:  1 8/11 = 19/11.

Next, multiply this 19/11 by 3, obtaining 57/11.

This mixed numer is an improper fraction.  

If you wish to go further, convert 57/11 into a mixed number:

57/11 = 5 2/11

4 0
3 years ago
Read 2 more answers
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