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Bess [88]
2 years ago
10

Hello i need help on these question if u can

Mathematics
1 answer:
Andrei [34K]2 years ago
8 0

Answer:

The third one of the first question.

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The function f(t) = 7 cos(pi over 4t) + 12 represents the tide in Light Sea. It has a maximum of 19 feet when time (t) is 0 and
lord [1]

The function f(t) = 7 cos(pi over 4t) + 12 represents the tide in Light Sea. It has a maximum of 19 feet when time (t) is 0 and a minimum of 5 feet. The sea repeats this cycle every 8 hours

To find the height of the tide after 2 hours, we plug in 2 for t  and find out f(2)

f(t) = 7 cos(\frac{\pi}{4})t+ 12

f(2) = 7 cos(\frac{\pi}{4})*2+ 12

f(2) = 7 cos(\frac{\pi}{2})+ 12

We know that cos (pi/2) is 0

f(2) = 7 (0)+ 12

So f(2)= 12

After two hours, the height of the tide is 12 feet



7 0
3 years ago
Millie has 5 yards of blue fabric and 7 yards of pink fabric. How many quilt squares can she make with the fabric she has if bot
inn [45]
Divide them and you're answer will come out
7 0
3 years ago
5x+10=25 Step 1: 5x=155x=15 Step 2: x=3x=3 Step 3: 5\left(3\right)+10=255(3)+10=25 Step 4: 15+10=2515+10=25 Step 5: 25=2525=25 P
marishachu [46]

Step-by-step explanation:

We need to solve 5x+10=25 ....(1)

Step 1.

Subtract 10 to both sides of the above equation.

5x+10-10=25-10

5x=15

Step 2,

Divide each side by 5.

\dfrac{5x}{5}=\dfrac{15}{5}\\\\x=3

If we want to check whether it is correct or not, step are as follows :

Put x = 3 in equation (1)

5(3)+10=15+10

=25

It means that the above steps are correct.

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3 years ago
Which expression is equal to sec x° multiplied by cot x°?
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Sec x is equal to 1/cosx, cot x is equal to cosx/sinx. cos x cancels, and you are left with 1/sinx. this is equal to cscx. Cosecant is : hypotenuse / opposite, so the answer is **D**
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3 years ago
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Please help!! Algebra 2<br><br> Find f(2) if f(x)=5x⁵-3x⁴- 17x³-4x²+10x+21 F(2)=
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Substitute x for 2
5(2)^5-3(2)^4-17(2)^3-4(2)^2+10(2)+21
do the exponents
5(32)-3(16)-17(8)-4(4)+10(2)+21
simplify
160-48-136-16+20+21
1
f(2)=1
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4 years ago
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