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3 years ago

Can someone help me with this??

Mathematics

2 answers:

Bad White [126]3 years ago

6 0

Answer:

sorry sorry don't know this

PtichkaEL [24]3 years ago

4 0

Answer:

34 minutes: 22 $\frac{2}{3}$ miles 1 hour: 40 miles

Step-by-step explanation:

First, find how far it will travel in 1 minute. This will make it easier to find the other distances. Use cross multiplication.

2 $\frac{1}{3}$ miles 3 $\frac{1}{2}$ minutes

? miles 1 minute

? = 2 $\frac{1}{3}$ × 1 ÷ 3 $\frac{1}{2}$

= 2/3 miles in 1 minute

34 minutes?

2/3 × 34 = 22 $\frac{2}{3}$ miles

1 hour (60 minutes)?

2/3 × 60 = 40 miles

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F(1)=-12, f(n)=2f(n-1) <br> find first 4 terms

amid [387]

<h3>First four terms are: -12, -24, -48, -96</h3>

============================================

Explanation:

The notation f(1) = -12 tells us that the first term is -12.

The equation f(n) = 2*f(n-1) indicates that we're multiplying the (n-1)th term by 2 to get the nth term. Basically we multiply each term by 2 to get the next term.

-12*2 = -24

-24*2 = -48

-48*2 = -96

So the first four terms are -12, -24, -48, -96.

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

Alternative Approach

f(1) = -12 .... first term

f(n) = 2*f(n-1) ... nth term recursive formula

f(2) = 2*f(2-1) ... plug in n = 2

f(2) = 2*f(1)

f(2) = 2*(-12) ... plug in f(1) = -12

f(2) = -24 ... second term

f(n) = 2*f(n-1) .... resetting for the next computation

f(3) = 2*f(3-1) ... plug in n = 3

f(3) = 2*f(2)

f(3) = 2*(-24) ... plug in f(2) = -24

f(3) = -48 .... third term

f(n) = 2*f(n-1) ... one more reset

f(4) = 2*f(4-1) .... plug in n = 4

f(4) = 2*f(3)

f(4) = 2*(-48) ... plug in f(3) = -48

f(4) = -96 ... fourth term

We get the first four terms to be -12, -24, -48, -96, which was the same as earlier.

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Schach [20]

Answer

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Step-by-step explanation:

The equation given in the question is as follows.

3x² + 7 = 28

Now simplify the above eqaution

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