Nine times the sum of a number and 2 is 189. I need to make it to an equation.
Answers
Equation:
9(a+2)=189
Solve the equation:
9a+18=189
9a=189-18
9a=171
a=171/9
a=19
Check the solution:
Let a=19
9(a+2)=189
9(19+2)=189
171+18=189
189=189
Therefore, the equation is 9(a+2)=189 and a is 19.
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During scuba lessons, Sue dove 30 feet, Harriet dove 120 feet, and Kathy dove 90 feet.What integers represent these depths? Order the integers from least to greatest. (Remember, the depth is underneath the surface of the water.)
Answers
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hope it helps!
120 cm2
132 cm2
156 cm2
276 cm2
Answers
Since the squarebase has side 6 cm and triangular side has height 10 cm, the total surface area of square pyramid is 156 cm²
What is the Total surface area of a square pyramid?
A square pyramid has a square base and four triangular sides, its surface area, A = area of square base + 4 × Area of triangular side.
Area of square base
Area of square with side, L is A = L²
Area of triangularbase
Area of triangle with height and base, L which is the length of the square base is A' = 1/2Lh
Thus, total surface area of square pyramid ,
A" = L² + 4 × 1/2Lh
= L² + 2Lh
Given that the length of the square base is 6 cm and the height of the triangular side is 10 cm.
Now substituting the values of the variables intot he equation, we have
A" = L² + 2Lh
A" = (6 cm)² + 2 × 6 cm × 10 cm
A" = 36 cm² + 120 cm²
A" = 156 cm²
So, the total surface area of square pyramid is 156 cm²
Learn more about total surface area of squarepyramid here:
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Answer:
C) 156cm²
Step-by-step explanation:
1. 6x6=36
2. 6x10=60
3. 60/2=30
4. 30x4=120
5. 120+36=156cm²
Answers
Answer:
red is the anwser y=3x+2
5x>20
Answers
Answer:
x > 4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
Equality Properties
Step-by-step explanation:
Step 1: Define Inequality
5x > 20
Step 2: Solve for x
- Divide 5 on both sides: x > 4
Here we see that any value x greater than 4 would work as a solution to the inequality.
Answers
Answer:
La fracción de bombones que se comieron entre los dos es
La caja tenía 40 bombones.
Step-by-step explanation:
Sabes que Andrés se comió 1/5 de los bombones de una caja y Ana 1/2 de la misma. Para conocer la fracción de bombones que se comieron entre ambos, debes sumar las fracciones que comieron cada uno:
Para hacer suma de fracciones con distinto denominador, lo primero que hay que hacer es determinar un denominador común. Para eso debes calcular el mínimo común múltiplo (mcm) entre los denominadores.
En este caso, el mcm entre 5 y 2 es 10.
Ahora tienes que multiplicar cada numerador por el número que hayas multiplicado el denominador. Para ello, dividís el m.c.m entre el denominador inicial y el resultado se multiplica por el numerador de esa fracción:
- 10÷5= 2 ⇒ 2*1= 2 Por lo tanto, 2 es el numerador de la primera fracción.
- 10÷2= 5 ⇒ 5*1= 5 Por lo tanto, 5 es el numerador de la segunda fracción.
Entonces:
Ahora simplemente sumas los denominadores:
La fracción de bombones que se comieron entre los dos es
Sabes que quedaron 12 bombones en la caja. Representando 1 la cantidad total de bombones, y si se comieron 7/10 de la caja, entonces quedaron:
Restando de manera similar al procedimiento usado para la suma se obtiene:
Finalmente podes aplicar la siguiente regla de tres: si 3/10 representa los 12 bombones que quedaron en la caja, entonces en 1 (que representa la cantidad total de bombones) cuantos bombones hay?
cantidad total de bombones=40
La caja tenía 40 bombones.
Answers
actually the answer is 120, apex:)
Answer:
120 combos
Step-by-step explanation:
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