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Sergeeva-Olga [200]
3 years ago
14

A plumber charges $45 for a service call to come to your house and $18 an hour while he is working. Write a function that shows

what the plumber charges for repairs. Is this function linear?
Mathematics
1 answer:
Brilliant_brown [7]3 years ago
6 0

Answer:

This relationship can be represented by a linear equation

y=18x+45

Step-by-step explanation:

y=18x+45

Where x is time in hours

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Solve the equation 2x3 + 7x2 – 10x – 24 = 0 in the real number system.
Rom4ik [11]

Answer:

x = 2

x = -4

x = -3/2

Step-by-step explanation:

We need to find the roots of the equation

2x^3 + 7x^2 – 10x – 24 = 0

We can factorize the equation into

(x-2)(x+4)(2x + 3) = 0

Roots

x = 2

x = -4

x = -3/2

The answer to your question is also attached in the images below

4 0
3 years ago
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Please help me with this question!
Alina [70]

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°, thus

∠1 = 180° - (72 + 57)° = 180° - 129° = 51°

The right angle at the left vertex is composed of 72° and ∠2, thus

∠2 = 90° - 72° = 18°

57° and ∠3 form a straight angle and are supplementary, thus

∠3 = 180° - 57° = 123°

∠4 = 180° - (∠2 + ∠3 ) ← sum of angles in a triangle

∠4 = 180° - (18 + 123)° = 180° - 141° = 39°

4 0
3 years ago
I only need number 11 in the picture please help and show work ​
IgorLugansk [536]

Answer:

1 = 115°

2 = 115°

3 = 65°

Step-by-step explanation:

P=65, so S (3) =65

360-65-65=230

230/2=115

Q (1) = 115

R (2) = 115

3 0
2 years ago
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Find the value of x 3x+1=x+9​
Ann [662]

Answer:

X = 4

Step-by-step explanation:

you just gotta subtract 1 from both sides in order to find what x equals. and from there you subtract x from both sides, any letter has an invisible 1 in front, so then you divide 2 from both sides. and you get x = 4

5 0
2 years ago
Find the perimeter and area of each figure.​
ASHA 777 [7]

Answer:

Perimeter = 89mm

area= 528 or 220

Step-by-step explanation:

hope this is useful

3 0
3 years ago
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