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Vika [28.1K]
3 years ago
6

What is the result of 3.18 * x -6.12=

Mathematics
1 answer:
RideAnS [48]3 years ago
5 0

Answer:

if you're using x as a multiplication sign then the answer is − 19.46 (i rounded the answer to the nearest hundredth), but it the x is a variable, there's no way to solve it.

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A shop sells shakes for $2 and doublescoop cones for $3. One day they sold 8 more shakes than scoops, and made $156. How many sh
I am Lyosha [343]

Answer:

x = 36 and y = 28

Step-by-step explanation:

Let she sells x shakes and y doublescoop cones

One day they sold 8 more shakes than scoops, and made $156.

ATQ,

2x+3y = 156 ..(1)

Also,

x = y+8 ..(2)

Put the value of x from (1) to equation (2)

2(y+8)+3y = 156

2y+16+3y = 156

5y = 156 - 16

5y = 140

y = 28

Put the value of y in equation (2)

x = 28+8

x = 36

<em>Hence, they will sell 36 shakes and 28 doublescoop cones.</em>

8 0
3 years ago
A plane left Chicago at 8 A.M. At 12 P.M., the plane landed in Los Angeles, which is 1,700 miles away.
DaniilM [7]

Commercial passenger flights always list the time AT THE PLACE where
the event took place.  The data you gave in your question means that the
flight departed ORD at 8:00 AM Central (Chicago) Time, and arrived LAX
at 12:00 PM Pacific (Los Angeles) time.

Since the trip spanned two time zones, it was actually in the air for 6 hours.

Average speed = (distance) / (time to cover the distance)

                         = (1,700 miles) / (6 hours)  =  (283 and 1/3) miles per hour.

====================================

But that wasn't what you had in mind, was it.

You meant that the flight took 4 hours.

In that case, the average speed was

                   (1,700 miles) / (4 hours)  =  425 miles per hour.

This is a much more reasonable average speed for a long haul
passenger jet airliner.

5 0
3 years ago
Jenny works in a picture framing shop. She has a function f(x) equals X +2 that find the size of a square frame, given a picture
Iteru [2.4K]

Given:

The function for size of a square frame is

f(x)=x+2

where, x is the side length of the picture.

The function for the price in dollars for the frame is

p(x)=3x

To find:

The single function for the price of a picture with an edge length of x.

Solution:

We know that, for a picture with an edge length of x.

Size of a square frame = f(x)

Price in dollars for the frame = p(x)

Single function for the price of a picture with an edge length of x is

(p\circ f)(x)=p(f(x))

(p\circ f)(x)=p(x+2)       [\because f(x)=x+2]

(p\circ f)(x)=3(x+2)           [\because p(x)=3x]

Let the name of this function is c(x). So,

c(x)=3(x+2)

Therefore, the required function is c(x)=3(x+2).

8 0
3 years ago
Find the length of the right triangle’s other leg. Round to the nearest tenth. SHOW YOUR WORK. leg = 9 ft hypotenuse = 12 ft
GREYUIT [131]

Use the Pythagorean Theorem: a^2 + b^2 = c^2. a and b are the legs, and c is the hypotenuse. Plug in your numbers: 9^2 + b^2 = 12^2

81 + b^2 = 144. Subtract 81 from 144 : b^2 = 63. Now take the square root of 63, which is 7.9. 7.9 ft is your answer.

3 0
3 years ago
Write an expression that would simplify to 3x - 17 *
Aleks04 [339]

Answer:

3x - (10+7)

Step-by-step explanation:

7 0
3 years ago
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