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ella [17]
3 years ago
13

A plumber charges $70 per hour $40 for the call. What does he charge for 4 hours of work Use x to represent the hours of work

Mathematics
1 answer:
marin [14]3 years ago
8 0
F(x)=70x+40
f(4)=280+40
f(4)=320
He will make $320 in 4 hours.
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Use braces and digits to designate the set of natural numbers.
alina1380 [7]

Answer:

N = \{1,2,3,4,5,6,.....\}

Step-by-step explanation:

Required

Determine the sets of natural number

Represent this set with letter N

From definition of natural numbers, they are integer numbers starting from 1;

In other words: 1,2,3,4,5, and so on.

To represent this as a set of N, we have

N = \{1,2,3,4,5,6,.....\}

<em>The ..... means that the counting still continues</em>

6 0
4 years ago
Neo is making invitations for their birthday party.
VMariaS [17]

Answer:

15%

Step-by-step explanation:

40=100%

20=50%

4=10%

2=5%

10%+5%=15%

4+2=6

6 0
3 years ago
Change to vertex form<br> 2x²16x+33
loris [4]

y=2x^2+16x+33\\\\y=2x^2+16x+32+1\\\\y=2(x^2+8x+16)+1\\\\y=2(x+4)^2+1\\\\or\\\\y=2x^2-16x+33\\\\y=2x^2-16x+32+1\\\\y=2(x^2-8x+16)+1\\\\y=2(x-4)^2+1

6 0
3 years ago
Prove the polynomial identity.
aleksandr82 [10.1K]

Explanation:

Since we have given that

(2x+1)^2-2(2x+1)

Now, we have to prove it as

(2x+1)(2x-1)

Now, start the iterations:

(2x+1)^2-2(2x+1)\\\\=4x^2+1+4x-4x-2\\\\=4x^2+1-2\\\\=4x^2-1\\\\=(2x)^2-1\\\\=(2x+1)(2x-1)

So, first blank will be filled with

4x^2+4x+1

Second blank will be filled with

4x^2-1

Hence proved.

7 0
3 years ago
If the hypotenuse of a right triangle is 10 inches and the side opposite to aq equals 5 inches, what is the measurement of aq ?
amid [387]
I hope this helps you



10^2=|aq|^2+5^2


100-25= |aq|^2


75= |aq|^2


aq= 5 square root of 3



this triangle 30-60-90
5 0
4 years ago
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