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3 years ago

Please help and hurry. Plllllllllllllzzzzzzzzzzzz get the right answer

Mathematics

2 answers:

weeeeeb [17]3 years ago

7 0

write two properties of aluminium that make it suitable for building body parts of tha aeroplane

Ratling [72]3 years ago

4 0

Answer:

The correct answer is $-\frac{3}{4} x-3$

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Could someone please help me on this?

bagirrra123 [75]

Point slope is
$y - y1 = m(x - x1)$
the slope is 7 and the coordinates given are (5,3), you plug in that into the equation and end up with
$y - 3 = 7(x - 5)$

7 0

3 years ago

Julio is paid 1.4 times his normal hourly rate for each hour he works over 30 hours in a week. Last week he worked 35 hours and

patriot [66]

N = regular rate
1.4n= overtime rate

30n + 5(1.4n) = $436.60 (30 hours x regular rate n) plus 5 hours at 1.4 times reg rate.

30n + 7n = $436.60 now add like terms
37n = $436.60 now divide both sides by 37
n= $11.80
Check to see if my answer is reasonable 30 x 12= 360 + 5 x 10 x 1.4 = about 70 (notice that I used 10 instead of 12 here so I could do it in my head)
360 + 70 = 430 - close enough - my answer is reasonable
Check:
(30 x $11.80) + 5 ( 1.4 x 11.80
354 + 5( 16.52)
354 + 82.60 = 436.60 ($436.60)

6 0

4 years ago

Read 2 more answers

IXL 7th grade math could someone please help!

KIM [24]

Answer:

supplementary angles are two angles that when add equal 180 degrees.

The supplement of an angle is 180 - n.

Step-by-step explanation:

n = 17(180 - n)

n = 3060 - 17n

n + 17n = 3060

18n = 3060

n = 3060/18

n = 170

so the unknown angle (n) = 170 degrees and its supplement = (180 - 170 = 10)......= 10 degrees.

7 0

3 years ago

Read 2 more answers

Simplify the expression 6(2x+1)+3(6x+2)

ExtremeBDS [4]

Answer:

30x+12

Step-by-step explanation:

distribute 6 into (2x+1) and 3 into (6x+2) basically multiply

12x+6+18x+6

combine like terms

12x+18x=30x

6+6=18

hope this helps

7 0

3 years ago

Read 2 more answers

A transformer increases the input voltage from 12V to 12,000V. What is the ratio of the number of wire turns on the primary coil

erma4kov [3.2K]

Answer:

$\frac{n_p}{n_s}=\frac{1}{1000}$

Step-by-step explanation:

Given voltage of primary coil is $V_p=12V$

And voltage of secondary coil is $V_s=12,000V$

A transformer is a device that contains primary and secondary coil. These coils are mounted on soft iron. The change in voltage depends upon the number of turns of primary coil $(n_p)$ and secondary coil $(n_s)$ .

Following equation represents the relation between them.

$\frac{V_s}{V_p} =\frac{n_s}{n_p}\\\\\frac{12,000}{12}=\frac{n_s}{n_p}\\\\1000=\frac{n_s}{n_p}$

Then, ratio of the number of wire turns on the primary coil to the number of turns on the secondary coil is

$\frac{n_p}{n_s}=\frac{1}{1000}$

5 0

4 years ago