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nexus9112 [7]
2 years ago
10

A book and a pen cost $18. The book and 2pens cost $21. What is the cost of the book​

Mathematics
2 answers:
iren2701 [21]2 years ago
5 0

Answer:

15

Step-by-step explanation:

one  pen is three dollars. that leaves 15 dollars left over.

If correct may l please have brainliest?

PIT_PIT [208]2 years ago
4 0

Answer:

15 dollars

Step-by-step explanation:

21 - 18 = 3

18 - 3 = 15

I hope this helps have a good day and stay safe!

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A shopkeeper had a profit of ₹ 50 on Monday , a loss of ₹ 20 on Tuesday and of loss of
Oliga [24]

Answer:

12

Step-by-step explanation:

Remark

I can't use a symbol for the currency. I'll just get the answer in numbers. You can add the symbol.

Solution

First day: 50

Second day: - 20

Third day: - 18

50 - 20 - 18 = 12

4 0
3 years ago
Find the magnitude of AB.<br> A(-2, 6), B(1, 10)<br> O A 2<br> OB. ✔️15<br> O C.5<br> OD ✔️2
natita [175]

Answer:

C. 5

Step-by-step explanation:

Use the Distance Formula.

Substitute the values of x1 , y1 , x2 , and y2 .

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|AB|² = |9+16|

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6 0
3 years ago
Dos triángulos son semejantes, si sus ángulos son iguales y sus lados proporcionales. Verdadero o falso?
iren2701 [21]

Answer: verdadero.

Step-by-step explanation:

En geometría se dice que dos figuras son semejantes si tienen la misma forma pero no necesariamente el mismo tamaño.

Ahora, lo que define la forma de un triángulo son sus ángulos, entonces si dos triángulos tienen los mismos ángulos, estos triángulos van a tener la misma forma.

Y los lados siendo proporcionales entre ellos (recordar que una relación proporcional es y = k*x) habla de la relación entre los tamaños de los dos triángulos.

Entonces si, "dos triángulos son semejantes, si sus ángulos son iguales y sus lados proporcionales" es verdadero.

5 0
2 years ago
Preparing for a visit to London, a New York resident exchanged 3,500
Aleksandr [31]
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3 0
3 years ago
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How to find the Area of a triangle
JulijaS [17]

Answer:

A = h b/2

Step-by-step explanation:

7 0
3 years ago
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