A number increased by seven is 15

Answers

Answer 1
Answer:

Answer:

The number is 8.

To solve this equation, we can set it up as follows:

Let x be the unknown number.

  • The equation "A number increased by seven is 15" can be written as:

x + 7 = 15

  • Now, to find the value of x, we need to isolate it on one side of the equation. We can do this by subtracting 7 from both sides of the equation:

x + 7 - 7 = 15 - 7

  • On the left side, the +7 and -7 cancel out, leaving us with just x:

x = 15 - 7

  • Now, simplify the right side of the equation:

x = 8

So, the unknown number is 8.

Answer 2
Answer:

To write the expression, I'll follow these steps :

↠ First, I am going to choose a letter that will represent my number.

↠ Then I'll plug it into the expression, and write the rest.

STEP ONE

  I'll choose d for my number.

STEP TWO

 We now have : d increased by 7 is 15, which is the same thing as d + 7 = 15.

To find d, subtract 7 from both sides :

d = 15 - 7 = 8

Therefore, d = 8.


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2.1x-0.9y=15 simplify
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While waiting for a bus after school, Renae programmed her MP3 player to randomly play two songs from her playlist, below. Assume that the MP3 player will not playthe same song twice. Homework Help
a. A sample space is a list of all possible outcomes for a probabilistic situation. List the sample space for all the
combinations of two songs that Renae could select. The order that she hears the songs does not matter for your list.
How can you be sure that you listed all of the song combinations?
b. Are each of the combinations of two songs equally likely? Why is that important?
c. Find the probability that Renae will listen to two songs with the name "Mama" in the title.
d. What is the probability that at least one of the songs will have the name "Mama" in the title?
e. Why does it make sense that the probability in part (d) is higher than the probability in part (c)?
PLAYLIST
a. I Love My Mama (country)
by the Strings of Heaven
b. Don't Call Me Mama (country) Duet
by Sapphire and Hank Tumbleweed
c. Carefree and Blue (R & B)
by Sapphire and Prism Escape
40²
d. Go Back To Mama (Rock) Duet
by Bjorn Free and Sapphire
e. Smashing Lollipops (Rock)
by Sapphire

Answers

Answer:

a. A sample space is a list of all possible outcomes for a probabilistic situation. List the sample space for all the

combinations of two songs that Renae could select. The order that she hears the songs does not matter for your list.

How can you be sure that you listed all of the song combinations?

Step-by-step explanation:

CPM EDUCATIONAL PROGRAM

hope this helps!!

Mrs.Morales wrote a test with 15 questions covering spelling and vocabulary.spelling questions (x )are worth 5 points and vocabulary questions (y)are worth 10 points.the maximum number of points possible on the test is 100.

Answers

Here's our data:
15 questions total
Total number of points: 100
Spelling questions are worth 5 and represented by x
Vocab questions are worth 10 and represented by y
Therefore:
x+y=15
5x + 10y= 100

So:
x+y=15
x= 15-y

5x +10y =100
5(15 -y) +10y =100
75 -5y +10y =100
75 +5y = 100
5y=25
y=5

x +y=15
x+5=15
x=10
There are 10 spelling questions and 5 vocab questions

Which of the following shows 27/54 written in prime factored form to help in reducing the fraction to simplest form? A. 9x3/9x6
B. 27x1/27x2
C. 3x3x3/3x3x3x2
D. 1/2

Answers

Answer:  C. 27/54 .

Step-by-step explanation:

Here, given number, 27/54

Since the prime factor form of 27 = 3* 3* 3

And, the prime factor form of 54 = 3* 3* 3* 2

putting the prime factor form of both 27 and 54 in the given numbers.

we get, (27)/(54) =(3* 3* 3)/(3* 3* 3* 2) = 1/2

Thus, by putting the prime factor form by C we get the simplest form of the given fraction.

Therefore, Option C is correct.


C. 3x3x3/3x3x3x2

27 splits into 3 and 9, the 9 splits into 2 3's. You can't split the threes.
54 splits into 2 and 27, the 27 is the same as above.

Find the area of a sector with a central angle of 110° and a diameter of 6 cm. Round to the nearest tenth.

Answers

=1/2* r^2 * theta
r=D/2=3 cm
theta=110 deg= 1.92 radian.
area=1/2*3*3*1.92 cm2 =8.64 cm2
=8.6 cm2 (approx.)

Mona solved an equation incorrectly, as shown below:Step 1: 5x = 30
Step 2: x = 30 − 5
Step 3: x = 25

Which statement best explains why Step 2 is incorrect in Mona's solution?

She did not add 5 to 30.

She did not divide 30 by 5.

She did not multiply 30 by 5.

She did not multiply 30 five times.

Answers

Answer:

Option 2nd is correct

She did not divide 30 by 5.

Step-by-step explanation:

As per the statement:

Mona solved an equation incorrectly, as shown below:

Step 1: 5x = 30

Step 2: x = 30 − 5

Step 3: x = 25

Step 2 is incorrect as she did not divide 30 by 5.

Correct steps for the equation are:

Step 1.

5x = 30

Step 2.

x = (30)/(5)

Step 3.

x = 6

Therefore, the statement which explains that Step 2 is incorrect in Mona's solution is, She did not divide 30 by 5.

Mona subtracted 5 where she should have divided 5. If the equasion was. x+5=30 then she would have subtracted 5.

neha used 4 bananas and 5 oranges. Daniel used 7 bananas and 9 oranges. Did neha and daniel use the same ratio of bananas to oranges? if not, who used the gearter ratio of bananas to or oranges.

Answers

4+5=9

7+9=17

17banan:9oran

no

Daniel