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3 years ago

Help i will mark brainlist if i cannn

Mathematics

2 answers:

suter [353]3 years ago

8 0

Answer:

a. 1 and 1/4.

Step-by-step explanation:

I simplified it.

Please mark me brainliest!

NikAS [45]3 years ago

4 0

Answer:

Step-by-step explanation:

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If you assume that there are exactly 365 days in a year, how many seconds are there in one year? Give your answer to the nearest

Elena L [17]

Answer:

31,536,000

Step-by-step explanation:

There are 3600 seconds in an hour and 24 hours in a day, so ...

(3600 s/h)(24 h/da) = 86400 s/da

Then in 365 days, there are ...

(365 da)(86400 s/da) = 31,536,000 s

_____

No rounding is needed.

5 0

3 years ago

What is the y value in this equation ?X(0)=(-1/3y)+6

snow_lady [41]

Answer:

Step-by-step explanation:

8 0

3 years ago

Ex 3.6<br> 6. find the area enclosed between the curve y= -2x²-5x+3 and the x-axis

Xelga [282]

When y=0,

$-2{ x }^{ 2 }-5x+3=0\\ \\ 2{ x }^{ 2 }+5x-3=0\\ \\ \left( 2x-1 \right) \left( x+3 \right) =0$

$\\ \\ \therefore \quad x=\frac { 1 }{ 2 } \\ \\ \therefore \quad x=-3$

--------------------

$\int _{ -3 }^{ \frac { 1 }{ 2 } }{ -2{ x }^{ 2 } } -5x+3dx$

$\\ \\ ={ \left[ -\frac { { 2x }^{ 2+1 } }{ 2+1 } -\frac { 5{ x }^{ 1+1 } }{ 1+1 } +3x \right] }_{ -3 }^{ \frac { 1 }{ 2 } }$

$\\ \\ ={ \left[ -\frac { 2{ x }^{ 3 } }{ 3 } -\frac { 5{ x }^{ 2 } }{ 2 } +3x \right] }_{ -3 }^{ \frac { 1 }{ 2 } }$

$\\ \\ \\ =\left\{ -\frac { 2 }{ 3 } { \left( \frac { 1 }{ 2 } \right) }^{ 3 }-\frac { 5 }{ 2 } { \left( \frac { 1 }{ 2 } \right) }^{ 2 }+3\left( \frac { 1 }{ 2 } \right) \right\} -\left\{ -\frac { 2 }{ 3 } { \left( -3 \right) }^{ 3 }-\frac { 5 }{ 2 } { \left( -3 \right) }^{ 2 }+3\left( -3 \right) \right\}$

$\\ \\ \\ =-\frac { 2 }{ 3 } \cdot \frac { 1 }{ 8 } -\frac { 5 }{ 2 } \cdot \frac { 1 }{ 4 } +\frac { 3 }{ 2 } -\left\{ -\frac { 2 }{ 3 } \left( -27 \right) -\frac { 5 }{ 2 } \cdot 9-9 \right\}$

$\\ \\ =-\frac { 2 }{ 24 } -\frac { 5 }{ 8 } +\frac { 3 }{ 2 } -\left\{ \frac { 54 }{ 3 } -\frac { 45 }{ 2 } -9 \right\}$

$\\ \\ =-\frac { 2 }{ 24 } -\frac { 15 }{ 24 } +\frac { 36 }{ 24 } -\frac { 54 }{ 3 } +\frac { 45 }{ 2 } +9$

$\\ \\ =\frac { 19 }{ 24 } -\frac { 54 }{ 3 } +\frac { 45 }{ 2 } +\frac { 18 }{ 2 } \\ \\ =\frac { 19 }{ 24 } -\frac { 54 }{ 3 } +\frac { 63 }{ 2 }$

$\\ \\ =\frac { 343 }{ 24 }$

Answer: 343/24 units squared.

6 0

3 years ago

Read 2 more answers

Much love if u answer <3 <3"▵EHG ≅ ▵KFC; Which is a true statement?

ipn [44]

ANSWER:- C. EG = KC

EXPLANATION:-
EH = KF
HG = FC
EG = KC
E=K
H=F
G=C

6 0

3 years ago

Solve the following word problem by using an equation and factoring. The sum of a positive number and its square is 20. What is

riadik2000 [5.3K]

Number: n
square of number: n^2
sum of n and n^2 is n+n^2=20
Rewriting this equation, we get n^2+n-20=0 = (n+5)(n-4) = 0

Then n+5=0 and n-4=0, so n = -5 and n = 4.

You must check both results. It could happen that both are correct, or that only one is correct.

5 0

3 years ago