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3 years ago

Two and a half times the sum of nine and twelve

Mathematics

1 answer:

Jobisdone [24]3 years ago

4 0

2.5 × (9 + 12) = 52.5

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the main rotor of a helicopter rotates 430 times per minute. find the number of degrees through which a point on the main rotor

n200080 [17]

Answer:

2580 degrees rotated per second

Step-by-step explanation:

since you have to find the degrees it rotates per second.

you need to divide 430 by 60 to find rotations per second

1) 430/60

= 7.16666667 rotations per second

-then you have to multiply it by 360 degrees ,because their is 360 degrees in a circle

2) 7.16666667 (360)

= 2580 degrees rotated per second

6 0

3 years ago

HEEEELP PLEASE<br> I dont understand

lesya [120]

Answer:

Step-by-step explanation:

$\dfrac{y}{x}=a\to y=ax\\\\\text{We have}\ x=1,\ y=0.5.\\\\\text{Substitute:}\\\\a=\dfrac{0.5}{1}=0.5\\\\\text{Therefore}\ y=0.5x$

7 0

3 years ago

Read 2 more answers

in a test correct answer are given positive numbers and for incorrect negative numbers jack scored in successive rounds were-65,

eimsori [14]

Answer:

<em>Jack scored a total of -40</em>

Step-by-step explanation:

<u>Arithmetic</u>

Jack took a test where the correct answers are given as positive numbers and the incorrect answers are negative numbers.

The scores were

-65,-10,-15,20,30

The total score is the arithmetic sum of all scores, including their signs:

Total score: -65-10-15+20+30

Total score: -40

Jack scored a total of -40

4 0

3 years ago

It would mean the world to me if you could do this

fiasKO [112]

Step-by-step explanation:

do you have a calculator that could count these? with it it would be easy.

anyway here are the first ones and thanks for the one star

3 0

3 years ago

I have no idea how to graph g(x)..or why f(x) is relevant..... Steps would be helpful!! I got a final twomorrow ;-;

SSSSS [86.1K]

When you derive a function from another using the transformation

$g(x) = f(x+k)$

you're translating the graph of the parent function f(x) horizontally.

More specifically, you translate the graph k units to the left if k is positive, k units to the right if k in negative.

So, starting from the graph of f(x), you have that the graph of

$g(x) = f(x+3)$

is the same graph of f(x), but shifted 3 units to the left.

3 0

3 years ago