A problem states: "There are 7 more girls than boys in a class. There are 23 students in the class in all. How many girls are there in the class?"What are the unknowns in this problem?

Answers

Answer 1

Answer: There are 15 more girls than boys

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Solve 1/2n + 3 < 5 ??

Answers

Answer:

n<4

Step-by-step explanation:

Answer:

$n < 4$

Step-by-step explanation:

$(1)/(2) n + 3 < 5 \n subtract \: 3 \: from \: both \: sides \n \n (1)/(2) n < 2 \n divide \: both \: sides \: by \: (1)/(2) \n \n n < 4$

3x2 − y3 − y3 − z if x = 3, y = −2, and z = −5.

Answers

Plug in each variable:
3(3)²-(-2)³-(-2)³-(-5)
3(9)-(-8)-(-8)+5
27+21
The answer is 48

Solve: y = -7(-13).
GIVING BRAINLIST HURRY UP!!!

Answers

Answer:

The answer is 91

Step-by-step explanation:

~Hoped this helped~

Alex wants to multiply a number by 12. First, she multiplies the number by 6. What number does she now need to multiply her answer by?

Answers

She need to multiply by 2 next.

What is Number System?

A number system is defined as a system of writing to express numbers. It is the mathematicalnotation for representing numbers of a given set by using digits or other symbols in a consistent manner.

Alex wants to multiply the number with 12.

She multiples by 6 first.

So, we need to focus on that what can be multiply by 6 to get 12 or what will be the quotientdividing12 by 6.

Both of the above will tell us what will be next number.

So,

6*2=12

or, 12/6=2

In both situation we get 2.

Hence, she need to multiply by 2 next.

Learn more about numbersystem here:

brainly.com/question/21751836

#SPJ2

Answer:

Hello! your answer should be 2 :)

Step-by-step explanation:

the simpliest way to look at multipicaton is just complex addition, so, for example, 10x3 is the same as 10+10+10. so for your question, we'll just add 6 to itself until we get to twelve! 6x1=6, 6x2=12, nice and simple, there's your answer! :)

Which inequality best models the situation if variable h is the number of hours Miguel could practice the piano each week? Miguel’s goal is to practice the piano more than hours per week. Show the possible number of hours he might practice

Answers

h is the number of hours Miguel could practice the piano each week.

Miguel goal is to practice the piano more than x hours per week.

h >= x

hence depending on the amount ot hours needed to practice each week, you have to set them to be the minimum, and any other larger quantity satisfies the proposition as well.

A math book comprises of 2 sections: arithmetic and geometry in the ratio 5:3. How much of each type of content will be needed to make a book of 480 pages?

Answers

480/8=60

(60*5) : (60*3) = 300:180

800
480/3=160
160(5)=800

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25 points? Suri's age is 4 less than 3 times her cousin's age. Suri is 17 years old. Which method can be used to find c, her cousin's age?1. Subtract 4 from 17, then divide by 3.2. Solve the equation 4c - 3 = 17.3. Add 4 to 17, then multiply by 3.4. Solve the equation 3c - 4 = 17.1, 2, 3, or 4? Thanks :)

Simplify 3j - {2k - [5h - (3j + k)]}.-3h - 5k 3h - 5k 5h - 3k -5h - 3k

A square can be changed into a rectangle by increasing the width by 3 units. Which expression represents the area of the rectangle in square units? (A) x^2+8x+15 (B) x2+15 (C) 2x +8 (D) 2x+15