HELP PLEASE Will give brainliest

Mathematics

1 answer:

Alenkasestr [34]2 years ago

6 0

Answer:

$=7x^2+8x-2$

Step-by-step explanation:

So, on Monday, Tuesday, and Wednesday, he mowed:

$(4x^2+3x-4),(5x-8),(3x^2+10)$

yards, respectively.

To determine how many yards he mowed in the three days, simply add the three expressions. Thus:

$(4x^2+3x-4)+(5x-8)+(3x^2+10)$

Combine like terms:

$=(4x^2+3x^2)+(3x+5x)+(-4-8+10)$

Add or subtract:

$=7x^2+8x-2$

And it cannot be simplified further :)

You might be interested in

Write 14/√2 + √50 in the form b√2 where b is an integer.

kifflom [539]

Answer:

$12 \sqrt{2}$

Step-by-step explanation:

Taking the terms one at a time,

$\frac{14}{ \sqrt{2} } \\ \frac{14 * \sqrt{2} }{ \sqrt{2} * \sqrt{2} } \\ \frac{14 \sqrt{2} }{2} \\ 7 \sqrt{2}$

$\sqrt{50} \\ \sqrt{25 * 2} \\ \sqrt{25}* \sqrt{2} \\ 5 * \sqrt{2} \\ 5 \sqrt{2}$

Adding the terms, you have;

$7 \sqrt{2} + 5 \sqrt{2} =(7 + 5) \sqrt{2} = 12 \sqrt{2}$

Hope it helps!

I'm out!

3 0

2 years ago

Read 2 more answers

Helpppppppppppppppppppppppppppppp

Diano4ka-milaya [45]

In this case it is to find the roots of the polynomial.
We have then:
2x ^ 2-5x + 1 = 3
Rewriting:
2x ^ 2-5x-2 = 0
Applying resolver we have
x = (- b +/- root (b ^ 2 - 4ac)) / (2a)
Substituting values:
x = (- (- 5) +/- root ((- 5) ^ 2 - 4 (2) (- 2))) / (2 (2))
x = (- (- 5) +/- root ((25 + 16)) / (2 (2))
x = (5 +/- root (41))) / (4)
x = ((5/4) +/- (root (41)) / 4)
Answer:
x = ((5/4) +/- (root (41)) / 4)
(option 4)

8 0

3 years ago

Help please help me with this.

boyakko [2]

$\pi r^2h$