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Masteriza [31]
3 years ago
7

What 2 numbers add up to 1 and multiply to -12

Mathematics
2 answers:
Vinil7 [7]3 years ago
7 0
-3 and 4......................
trasher [3.6K]3 years ago
7 0
-3 * 4 = -12 
-3 + 4 = 1
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Yoko needs 300 copies of her resume printed. Dakota printing charges 19.50$ for the first 200 copies and 9$ for every 100 additi
Leokris [45]

Answer:

A. c(r)=$19.5 if r < 2

c(r)=$19.5+(r-2) ($9) (1.045) if r ≥ 2

B. $29.78

Step-by-step explanation:

A. Based on the information given if we are to express the cost of the resumes which is c(r) algebraically as a piecewise function what we would have will be:

c(r)=$19.5 when r represent an INTERGER and is less than 2

c(r)=$19.5+(r-2) ($9) (1+0.045)

c(r)=$19.5+(r-2) ($9) (1.045) when r represent an INTERGER and is greater than 2

Therefore to express the cost of the resumes c(r) algebraically as a piecewise function will be: c(r)=$19.5 if r < 2

c(r)=$19.5+(r-2) ($9) (1.045) if r ≥ 2

B. Calculation for How much will 300 copies cost, including a sales tax of 4 1/2%

Cost of 300 copies=($19.5+$9)+($19.5+$9) (0.045)

Cost of 300 copies=$28.5+$28.5(0.045)

Cost of 300 copies=$28.50+$1.28

Cost of 300 copies=$29.78

Therefore How much will 300 copies cost, including a sales tax of 4 1/2% will be $29.78

7 0
3 years ago
A cell phone app charges $1.19 to download a song and 4.99 membership fee write an expression that gives the total cost in dolla
Andrew [12]

Answer: $1.19X+ 4.99

then :$15.7

Step-by-step explanation: first you write the expression  which is $1.19X + 4.99 because $1.19 is the cost of per song download and X stands for the numer of songs .

then after  you khow the expression  you substitute ( which meanse to put something instead of a variable like X) 9 because 9 is the total number of song

that how you get $15.7 if you substutute 9 with X.

hi . i hope the explanation is helpful to you .

5 0
3 years ago
Mr. Miller has a 20-foot ladder, which he
dimulka [17.4K]

Answer:

8 ft

Step-by-step explanation:

the ladder will make a right angle triangle with the house. The hypotenuse of the triangle is the ladder, 20 ft, and the height of the triagnle is 18 ft.

Solve for the base of the right angle triangle using pythagorean's theorem:

c=20, a=18, b=?

b^{2}=c^{2} - a^{2}\\b^{2}=20^{2} - 18^{2}

b=\sqrt{72}

b= 8.49 ft

round to the nearest foot,

b = 8 ft

3 0
3 years ago
4(x+8)-2(x-7)=46 x=?
Scorpion4ik [409]

Answer:

x = 0/2

x = 0

Step-by-step explanation:

4(x+8)-2(x-7) = 46

Expanding the brackets

4x +32 - 2x +14 = 46

2x + 46 = 46

2x = 46-46

2x = 0

x = 0/2

x = 0

5 0
3 years ago
This morning, Kevin's car had 13.8 gallons of fuel. Now, 1.9 gallons are left. How much fuel did Kevin use?
lesantik [10]

Answer:

He used 11.9 gallons of fuel.

Step-by-step explanation:

You would subtract 1.9 from 13.8

Hope this helps!

7 0
2 years ago
Read 2 more answers
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