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Marysya12 [62]
3 years ago
6

The cost of Phone Plan Q is $10 per month plus $0.14 per minute. Phone Plan R costs $7 per month plus $0.17 per minute. If Antho

ny talks on the phone for 70 minutes in a month, which plan is less expensive for Anthony, and by how much?
A. Plan Q by $0.90

B. Plan R by $0.90

C. Plan Q by $1.10

D. Plan R by $1.10
Mathematics
1 answer:
exis [7]3 years ago
4 0

Answer:

The correct answer would be B

Step-by-step explanation:

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en una guardería ay una matricula de 50 lactantes de los cuales 20 son niñas cual es la razon de niñas a niños en dicha guarderi
Svetradugi [14.3K]

Answer:

La razón de niñas a niños en la guardería es de 2 niñas por cada 3 niños.

Step-by-step explanation:

Una razón es una división entre dos números, generalmente en forma racional (fraccionaria). La razón de niñas a niños en la guardería es la cantidad de niñas dividida por la cantidad de niños de la dicha guardería, Es decir:

x = \frac{20}{30}

x = \frac{2}{3}

La razón de niñas a niños en la guardería es de 2 niñas por cada 3 niños.

7 0
3 years ago
Given that g(x)=3x-7 <br> Find the value of k<br> <img src="https://tex.z-dn.net/?f=g%5E%7B2%7D%20%284k%2F3%29%3D8" id="TexFormu
frez [133]

Answer:

{  \frac{7}{4} - \frac{\sqrt{2} }{2} ,  \frac{7}{4} + \frac{\sqrt{2} }{2} }

Step-by-step explanation:

ax² + bx + c = 0

x_{12} = ( - b ± \sqrt{b^2 -4ac} ) ÷ 2a

~~~~~~~~~~~

g(x) = 3x - 7

g²(x) = (3x - 7)²

g²(x) = 9x² - 42x + 49

g²( \frac{4k}{3} ) = 9( \frac{4k}{3} )² - 42( \frac{4k}{3} ) + 49

9( \frac{4k}{3} )² - 42( \frac{4k}{3} ) + 49 = 8

16k² - 56k + 41 = 0

a = 16 , b = - 56 , c = 41

D = b² - 4ac = ( - 56)² - 4(16)(41) = 512 = 2^{9}

k_{1} = ( 56 + √2^{9} ) ÷ 32 = \frac{7}{4} + \frac{\sqrt{2} }{2}

k_{2} = \frac{7}{4} - \frac{\sqrt{2} }{2}

3 0
3 years ago
Evaluate -3(9+y) if y = -7 ​
mario62 [17]

Answer:

-6

Step-by-step explanation:

Substitutet -7 for y in -3(9+y):  -3(9 - 7)  =  -3(2)  =  -6

6 0
3 years ago
Read 2 more answers
Evaluate the following functions for the given value.<br> 19. f(x) = -x3 + x2; -2
suter [353]

Answer:

12

Step-by-step explanation:

f(x) = -x^3 + x^2

Let x = -2

Evaluate the expression

f(-2) = -(-2)^3 + (-2)^2

       = - (-2)*(-2) * (-2)  + ( -2) * (-2)

       = -(-8) + ( 4)

    = 8 + 4

   = 12

3 0
2 years ago
Sam and Bethan share £54 in the ratio 5:4. how much will each person get
Sunny_sXe [5.5K]
Given :- 
sam and Bethan shareare in the ratio 5:4 respectively. 
 Total no of money is = 54ÂŁ 
 Solution :-
 Let Sams share is be x ie = 5 
 Let Bethans share be y ie = 4
 Total no of share is = 9
 Therefore the persons share is (particular persons share / total no of share) *
total value of money 
 Ans : -
 Therefore sams share x is = (5/9)* 54 =30ÂŁ
 Therefore Bethans share y is = (4/9) * 54 = 24ÂŁ
5 0
3 years ago
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