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denis23 [38]
3 years ago
9

Pls help it's due today​

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

x = 5

y = 8.66

Step-by-step explanation:

I hope this helps!!

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The slope of a roof is called its pitch. The parthenon, an ancient greek temple, has a roof with a rise of 3.6 meters and a run
diamong [38]
Slope = 3.6/12
Slope = 0.3
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7 0
4 years ago
On monday it took 5 builders to 3 1/2 hours to build a wall
zubka84 [21]

Answer:   £ 81.38

Step-by-step explanation:

Given: On Monday,

5 builders took 3\dfrac{1}{2} hours  ( i.e. \dfrac{7}{2} hours )  to build a wall.

On Tuesday, only 2 builders were available.

As workers are inversely proportional to the time if the job remains constant.

Inverse variation equation : x_1y_1=x_2y_2

Let x be the time taken by 2 builders, then

2\times x =5\times \dfrac{7}{2}

\Rightarrow\ x=\dfrac{35}{2}\times\dfrac{1}{2}=\dfrac{35}{4}=8.75

So, 2 builders will take 8.75 hours.

Each paid  £9.30 for each hour.

Then, each builder will be paid for the work completed on Tuesday = £9.30 x  8.75

≈ £ 81.38

Hence, each builder will be paid £ 81.38 for the work completed on Tuesday .

5 0
4 years ago
It takes Adi 2 hours to drive from home to her office and 3 hours if she drives 15 mph slower. What is the distance between Adi'
Solnce55 [7]

Answer:

90 miles

Step-by-step explanation:

Let ori. speed = z

distance = speed × time

= z × 2

= 2z miles

distance = (z - 15) × 3

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2z = 3z - 45

z = 45mph

distance = 45 × 2

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(Correct me if i am wrong)

8 0
3 years ago
X^2+(y-5)=25 find the center of the circle
mash [69]

{x}^{2}  + (y - 5) = 25 \\  {x }^{2}  + y = 25 + 5 \\  {x}^{2}  + y = 30  \\  {x}^{2}  + y =  \sqrt{30}  \\
centre: (0,0)
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3 0
3 years ago
If A= 3x^2+5x-6 and B = -2x^2-6x+7 then A-B equals ​
Ber [7]

Answer:

A-B=x^2-x+1

Step-by-step explanation:

A-B=3x^2+5x-6+(-2x^2-6x+7)

 =3x^2+5x-6-2x^2-6x+7

 =x^2-x+1

5 0
2 years ago
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