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Nata [24]
3 years ago
7

Jacob bought 30 eggs and William

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
8 0

Answer:

30+20=50

30/50=.6

60%

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The equation 3sinx+cos^2x=2 is solved below<br> Please help! Thanks!
Kay [80]
We have that
3sin x+cos²<span>x=2
</span>3sin x+(1-sin²x)<span>=2
</span>-sin²x +3sin x=1
sin²x -3 sin x+1=0---------> up to here the procedure is correct
let
A=sin x
then
A²-3A+1=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

(A²-3A)=-1

Complete the square. Remember to balance the equation by adding the same constants to each side.

(A²-3A+2.25)=-1+2.25

Rewrite as perfect squares

(A-1.5)²=1.25

(+/-)(A-1.5)=1.12

first solution

(A-1.5)=1.12--------> A=1.12+1.5-----> A=2.62-----> sin x=2.62

second solution

-(A-1.5)=1.12----> -A+1.5=1.12----> A=1.5-1.12----> A=0.38---> sin x=0.38

the answer is

the equation was factored incorrectly

8 0
3 years ago
Read 2 more answers
A 40% discount is the same as paying:
Drupady [299]

Answer:

Step-by-step explanation:

60% of original price

3 0
3 years ago
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Solve for x.
attashe74 [19]
-5.73 repeating is x
4 0
3 years ago
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Liana started to evaluate the function f(x) = 2x2 – 3x + 7 for the input value 2.
Ne4ueva [31]

Step-by-step explanation:

the answer is 9 i hope it helps

5 0
3 years ago
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You are working to earn enough money for a vacation which costs 1200.0 dollars. Your take-home pay is $16.50/hour, but you only
Harrizon [31]

Answer:

It will take 18\frac{2}{11} days to earn enough money to pay for your vacation.

Step-by-step explanation:

From the question,

The total cost of the vacation is 1200.0 dollars, that is $1200.0

Also, you earn $16.50/hour but you only work for 4 hours each day.

First, we will determine how much you earn in a day.

If you work for 4 hours each day and earn $16.50 / hour; then the amount you earn in a day is

$16.50/hour × 4 hour

= $66.00

Hence, you earn $66.00 dollars each day.

Now, to determine the number of days it will take for you to earn enough money to pay for your vacation, that will be

The cost of the vacation divided by the amount earned each day

Cost of the vacation = $1200.0

Amount earned each day = $ 66.00

Hence, the number of days it will take for you to earn enough money to pay for your vacation is

$1200.0 / $66.00

= 18\frac{2}{11} days or 18.18 days

Hence, it will take 18\frac{2}{11} days to earn enough money to pay for your vacation.

8 0
3 years ago
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