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SpyIntel [72]
3 years ago
11

10. The bill (including parts and labor) for the repair of an oven was $142. The cost

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
6 0

Total cost=$142

cost of parts=$62

cost paid for labour=$142-$62=$80

According to question,

》cost of labour per hr=$32

which can be written as,

》cost of labour/time=$32

Use cross multiplication,

》time=cost of labour/32

Since cost of labour is 80,

Time=80/32

=2.5hrs

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15/15 as a whole number
vladimir2022 [97]
Bruh it's 15. i mean if it is 15/15 then there is 15 things present yunno? idk but i hope this helped, have an amazing day :)
8 0
3 years ago
Solve 3x2 + 4x = −5.
Alla [95]
Move the -5 over by adding 5 to both sides
3x^2+4x+5=0
must use quadratic formula

for an equation in the form
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}

a=3
b=4
c=5

x=\frac{-4+/- \sqrt{4^2-4(3)(5)} }{2(3)}
x=\frac{-4+/- \sqrt{16-60} }{6}
x=\frac{-4+/- \sqrt{-44} }{6}
x=\frac{-4+/- 2\sqrt{-11} }{6}
remember that√-1=i
x=\frac{-4+/- 2i\sqrt{-11} }{6}
x=\frac{-2+/- i\sqrt{-11} }{3}

x=\frac{-2+ i\sqrt{-11} }{3} or x=\frac{-2- i\sqrt{-11} }{3}


4 0
3 years ago
Somebody help pls:)))
netineya [11]
Answer: 5.4

--------------------------------------

Explanation:

Angle D = 43 is the given reference angle
side FE = 5 is the side opposite the reference angle (since its the leg furthest away from angle D)

We want to find side DE which is the other leg. This is the adjacent side with angle D as the reference angle

Use the tangent rule

tan(angle) = opposite/adjacent
tan(D) = FE/DE
tan(43) = 5/DE
DE*tan(43) = 5
DE = 5/tan(43)
DE = 5.36184355 <<-- use a calculator here; this is approximate
DE = 5.4 <<-- round to the nearest tenth

That's why 5.4 is the answer

6 0
3 years ago
list M and n are the zeros of the polynomial 3x square + 11 x minus 4 then find the value of m divided n plus n dividedm​
Vaselesa [24]

Answer:

Step-by-step explanation:

3x²+11x-4

when splitting the middle term

it becomes

3x²+12x-1x-4

=3x(x+4)-1(x+4)

(3x-1)(x+4)

either 3x-1=0 then x=1/3

or x+4=0 then x= -4

m=1/3

n=-4

therefore

value of m divided n plus n dividedm​=1.25

hope this helps plzz mar me brainliest

5 0
3 years ago
What is the volume of the composite figure shown? Use 3.14 for π.
Ivenika [448]

Answer:

25.12

Step-by-step explanation:

the formula of a cone is pi r^2 * h/3

r = radius and h = height

the radius is 2 and the height is 3

and the question says use 3.14 instead of pi so

we have

3.14 * 2^2 * 6/3

2*2 or 2^2 = 4

3.14 * 4 * 6/3

6/3 = 2

3.14 * 4 * 2

4*2 = 8

and 8 * 3.14 is 25.12

7 0
3 years ago
Read 2 more answers
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