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Amiraneli [1.4K]
2 years ago
15

A plumber charges $25 to come to a home, and $15 per hour for a repair. Which equation gives the total cost, y, for a repair tha

t lasts x hours?

Mathematics
1 answer:
pogonyaev2 years ago
5 0

Answer:

15x + 25 = y

Step-by-step explanation:

$25 is a fixed cost and will have to be paid if the plumber comes and $15 times the number of hours it takes to do the repair is the variable cost. 'x' in this case is the number of hours. So the equation will be 15x + 25 = y

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Two construction workers, Tyrone and Diego, are standing 15 yards apart, looking up at a piano hanging between the two men from
Yanka [14]

Answer:

The distance between Tyrone and the piano is 23.7 yards

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle P

Remember that the sum of the internal angles of a triangle must be equal to 180 degrees

∠T+∠D+∠P=180°

substitute the given values

65°+77°+∠P=180°

142°+∠P=180°

∠P=180°-142°=38°

step 2

applying the law of sines

\frac{TD}{sin(P)}=\frac{TP}{sin(D)}

substitute the given values

\frac{15}{sin(38\°)}=\frac{TP}{sin(77\°)}

TP=\frac{15}{sin(38\°)}(sin(77\°))\\\\TP=23.7\ yd

therefore

The distance between Tyrone and the piano is 23.7 yards

6 0
3 years ago
Simplify this correctly and get a lot of points! ;) ;) ;)<br> 9x- 7i &gt; 3 (3x-7u)<br> ;)
taurus [48]
9x- 7i > 3 (3x-7u)
9x- 7i > 9x-21u
9x-9x-7i>21u
-7i > 21u
6 0
3 years ago
Can we<br> multiply these two monomials? (4x^2)(-2b^3a)
arlik [135]

Answer:

-8b^3ax^2

Step-by-step explanation:

7 0
3 years ago
Find the missing length of the triangle.
allsm [11]

Hey there!

Solve using pythagoras theorem (it's given that is triangle is right angled. Pythagoras theorem only works in the case of right triangles) ⇨ Hypotenuse² = Base² + Altitude ²

Here,

Base = 9 mm

Hypotenuse = 15 mm

Altitude = b

Hypotenuse² = Base² + Altitude ²

15² = 9² + b²

225 = 81 + b²

225 - 81 = b²

144 = b²

√144 = b

<u>1</u><u>2</u><u> </u><u>mm </u>= b

Hope it helps ya!

3 0
3 years ago
Please help with this question thanks
ololo11 [35]

the highest fair would be 240 customers charging 11 dollars with a profit of 2,640 dollars

8 0
3 years ago
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