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morpeh [17]
2 years ago
7

Gabrielle's age is three times Mikhail's age. The sum of their ages is 56, what is their age?

Mathematics
2 answers:
Alenkinab [10]2 years ago
8 0
X - age of Mikhail's
3x - age of Gabrielle (three times Mikhail's age)

x + 3x = 56
4x = 56 |:4
x = 14   <-- age Mikhail
3 * x = 14 * 3 = 42   <-- age Gabrielle

As is clear from the job three times the 14 to 42 by adding 14 gives 56, which is behind what they have in total.

My name is Ann [436]2 years ago
6 0
G=3M

G+M=56

-------------------------------------------

3M+M=56

4M=56

M=56/4=14

---------------------------------------------

G+14=56

G=42

---------------------------------------------

So Gabriel is 42 and Mikhail is 14.
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What is the sum of all measures of the interior angles of a regular pentagon?
Ugo [173]
There are 540 degrees total in the interior angles of a regular pentagon.

Just so you know, the total degrees of interior angles goes up by 180 degrees.

A triangle is 180 degrees, a quadrilateral 360, and a pentagon 540.
6 0
2 years ago
Ron finds 9 books at a bookstore that he would like to buy, but he can afford only 5 of them. In how many ways can he make his s
olga55 [171]

Answer:

d. 126; 70

Step-by-step explanation:

given that Ron  finds 9 books at a bookstore that he would like to buy, but he can afford only 5 of them.

Out of 9 books he has to select 5 of them

Here selection of books can be done in any order.  Hence order does not matter

No of ways he selects 5 books out of 9 books = 9C5

= 126

Part II

One book is a must

Hence he has options only 4 books from the remaining 8.

No of ways when one book is compulsory = selecting 3 books from 8 books

= 8C4

= 70

Option d is right.

6 0
2 years ago
Explain how you would choose a scale to use for a map. What things would you need to consider
lianna [129]
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On a map, the equal sign in 1 in. = 30 mi does not mean that the two quantities are equal, as it would in an equation.

A scale is the ratio that compares a length in a drawing to the corresponding length in the actual object. If a 30-mile road is 1 in. long on a map, you can write the scale of the map in these three ways:

Go here for more. http://www.phschool.com/itext/mgmath_course2/Ch05/05-07/PH_MSM2_ch05-07_Obj1.html
4 0
3 years ago
Willie changes the quadratic function f(x)=x2?6x+14 to vertex form f(x)=a(x?h)2+k. If Willie does this correctly, what is the va
andrew11 [14]

Answer:

The value of k is 5.

Step-by-step explanation:

Since we know we can convert function's quadratic form to vertex form by completing the square.

f(x)=x2?6x+14

We will add and subtract 9 to our equation in order to complete the square.

1(x^{2} ?6x+9)-9+14

Upon completing the square and combining like terms we will get,

1(x?3)^{2} +5

Upon comparing Willie's vertex form with our expression we can see that k is 5.

Therefore, the value of k is 5.

8 0
3 years ago
PLEASE HELP I NEED THIS TURNED IN,
DerKrebs [107]

Answer:

3/3 is equivilant to 1.

Multiplying 6/4 by 1, would be 6/4. Also, multiplying 6/4 by 3/3 would be 18/12, which could be simplified to 6/4.

Hope this helps!    

3 0
3 years ago
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