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bagirrra123 [75]
3 years ago
7

Xavier is thinking of a number. Nine more than four times the number is the same as fifteen less than twice the number. What is

Xavier's number?
Mathematics
1 answer:
AysviL [449]3 years ago
5 0
I think it’s 21 not sure because I did 9 more than 4 times which is 9*4 =36 then u subtract 15 less which would be 36-15 which equals 21
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Khloe made 20% of her free throws over the season. If she shot 240 free throws, how many did she make?
Butoxors [25]
20% is the same as saying 0.2, so if you multiply 0.2 by 240, you should get your answer. Or an alternate way of seeing it is 2 times 24.
8 0
2 years ago
What is the inverse function of f(x) = x
sasho [114]

Answer:

y = x

Step-by-step explanation:

The inverse of f(x) = x is just y = x.

7 0
3 years ago
Jen Butler has been pricing​ Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 79.
xxMikexx [17]

<u>Answer:</u>

Price of the​ adult's ticket = $13

Price of a​ child's ticket = $ 10

<u>Step-by-step explanation:</u>

Given:

Cost of train fares for Three adults and four children = $79

Cost of train fares Two adults and three children  = $ 56

To Find:

Price of the​ adult's ticket and the price of a​ child's ticket =?

Solution:

Let the cost of one adult's ticket be x  and

Let the cost of one child's ticket be y

Then

Three adults and four children must pay $ 79 be

3x + 4y = 79-----------------------------------------------(1)

Two adults and three children must pay $56

2x + 3y = 56----------------------------------------------(2)

multiply  eq(1) by 2, we get

6x + 8y = 158----------------------(3)

multiply  eq(2) by 3, we get

6x + 9y = 168----------------------(4)

Subracting (3) from (4)

 6x + 9y = 168

 6x + 8y = 158

(-)      (-)       (-)

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

0x +  y = 10

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

y=10

Now substitute the value of y in eq (1) to get the value of x

3x + 4(10)= 79

3x +  40 = 79

3x = 79 - 40

3x = 39

x = \frac{39}{3}

x= 13

3 0
3 years ago
Suppose that there is a coffee shop in an office(Which also has interns). It is observed that out of the people that visit the c
ser-zykov [4K]
The probability that the first 6 people who are asked that aren't interns is 35% 
The probability that the first intern that we talk to is a female is 25%
8 0
3 years ago
It costs $2.80 to make a sandwich at the local deli shop. To make a profit, the deli sells it at a price that is 170% of the cos
Svetlanka [38]

Answer:

Sandwich sells for  $4.76  .

Step-by-step explanation:

As given

It costs $2.80 to make a sandwich at the local deli shop.

To make a profit, the deli sells it at a price that is 170% of the cost.

170% is written in the decimal form

= \frac{170}{100}

= 1.7

Thus

Sandwich selling cost = 1.7 × Cost of making

Put all the values in the above

Sandwich selling cost = 1.7 × $ 2.80

                                    = $4.76

Therefore the Sandwich sells for  $4.76  .

7 0
3 years ago
Read 2 more answers
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