3 years ago

David walks 3 km north , and then turns east and walk 4 km

Mathematics

1 answer:

Serga [27]3 years ago

7 0

he walked 7 km in all.

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Write 2 numbers that round to 480 when rounded to the nearest 10.

OLga [1]

Step-by-step explanation:

First, 480 rounded to the nearest ten is:

480

second 480 rounded to the nearest ten is 481

6 0

3 years ago

(98 POINTS) (PLEASE HURRY!)

Montano1993 [528]

Answer:

1. no like terms

2. x^ 3 − x^ 2 − x + 1

3.x y + x + y + 1

4.x^ 3 + x^ 2 y + x y^ 2 + y^ 3

Lol

6 0

3 years ago

Sklyer has 15 less than twice as many customers as when she started selling newspapers. She now has 155 customers. How many did

arlik [135]

155 = 2x -15
170 = 2x
85 = x

She had 85 when she first started.

8 0

3 years ago

Read 2 more answers

. Approximate each of the following logarithms to four decimal places. Use the LOG key on your calculator rather than logarithm

Free_Kalibri [48]

Answer:

$log_2(6)=2.584$

Step-by-step explanation:

Here the logarithm has base 2

$log_2(3^2)=log_2(6)$

Let

$log_2(6)=x$

$log_ya=x\\\Rightarrow y^x=a$

$\\\Rightarrow 2^x=6$

Now, take logarithm to the base 10

$log 2^x=log6\\\Rightarrow xlog2=log6\\\Rightarrow x=\frac{log6}{log2}\\\Rightarrow x=2.584$

So, $log_2(6)=2.584$

5 0

3 years ago

3. The functions f and g are defined by f: x → ax – b where a and b are constants and g: x → X+4.

valentinak56 [21]

Answer:

fg(2) = 9 means that f(g(2)) = 9

We know that g(2) = 6

So f(6) = 9 which means that

6a - b = 9 (note 1)

And we know that g(f(1/2)) = 2

And we know that f(1/2) = 1/2(a) - b

So g(1/2(a) - b) = 2

Meaning that 1/2(a) - b + 4 = 2

So 1/2(a) - b = - 2 (note 2)

Using note 1 and 2 we can solve the equation

11/2(a) = 11 so a = 2 and b = 3

5 0

3 years ago