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Flura [38]
3 years ago
11

Torri had$20 to buy a birthday persent for her dad she decided to buy a dvd for $18 the sales tax is $7 does she have enogh mone

y
Mathematics
1 answer:
kondaur [170]3 years ago
7 0
No she does not have enough money
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Which equation represents this problem? The time it takes Tomás to bike to the community center is 2 minutes less than half the
Helen [10]

Answer:

The equation that represents this problem is \frac{1}{2} p - 2 = 18 ⇒ D

Step-by-step explanation:

Let us solve the question

∵ p is the time it takes Tomás to bike to the park

∵ The time it takes Tomás to bike to the community center is 2 minutes

   less than half the time it takes him to bike to the city park

→ That means multiply p by \frac{1}{2} , then subtract 2 from it

∴ The time to the community center =  \frac{1}{2} (p) - 2

∴ The time to the community center =  \frac{1}{2} p - 2

∵ It takes Tomás 18 minutes to bike to the community center

→ Equate The time to the community center by 18

∴ \frac{1}{2} p - 2 = 18

∴ The equation that represents this problem is  \frac{1}{2} p - 2 = 18

7 0
3 years ago
What does 5x + 10y equal
leonid [27]

Answer:

Step-by-step explanation:

 Slope = 1.000/2.000 = 0.500

 x-intercept = 0/1 = 0.00000

 y-intercept = 0/-2 = -0.00000

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5*x-(10*y)=0  

Step by step solution :

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  5x - 10y  =   5 • (x - 2y)  

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

2.1      Solve :    5   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Equation of a Straight Line

2.2     Solve   x-2y  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  x-2y  = 0 and calculate its properties

Graph of a Straight Line :

 

 

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 0/-2 so this line "cuts" the y axis at y=-0.00000

 y-intercept = 0/-2  = -0.00000  

Calculate the X-Intercept :

When y = 0 the value of x is 0/1 Our line therefore "cuts" the x axis at x= 0.00000

 x-intercept = 0/1  =  0.00000  

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 0.000 and for x=2.000, the value of y is 1.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 1.000 - 0.000 = 1.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  1.000/2.000 =  0.500  

Geometric figure: Straight Line

 Slope = 1.000/2.000 = 0.500

 x-intercept = 0/1 = 0.00000

 y-intercept = 0/-2 = -0.00000

6 0
4 years ago
t the Fidelity Credit Union, a mean of 5.8 customers arrive hourly at the drive-through window. What is the probability that, in
zhuklara [117]

Answer:

0.5217

Step-by-step explanation:

Given that:

mean \mu = 5.8

Using Poisson Probability formula:

P(X=x) = \frac{   (e^{- \mu} * {\mu^x) }}{x!}

P(X>5.8)=1-P(X \leq5)

= 1-[P(X=0)+P(X=1)+P(X=2)+P(X=3)+P(X=4)+P(X=5)]

= 1 -[\frac{(e^{-5.8}*5.8^0)    }{ 0!   } + \frac{(e^{-5.8}*5.8^1)    }{ 1!   } +\frac{(e^{-5.8}*5.8^2)    }{ 2!   } +\frac{(e^{-5.8}*5.8^3)    }{ 3!   } +\frac{(e^{-5.8}*5.8^4)    }{ 4!   } +\frac{(e^{-5.8}*5.8^5)    }{ 5!   } ]

=1-(0.003+0.0176+0.0509+0.0985+0.1428+0.1656)

=1-0.4783

=0.5217

∴ the probability that, in any hour, more than 5 customers will arrive =0.5217

7 0
3 years ago
HELP PLEASE!! I WILL MARK BRAINLIST
ankoles [38]

Answer:

D

Step-by-step explanation:

Have a nice day :)

7 0
3 years ago
Two men p and q set off from a base camp r prospecting for o,p moves 40km on a bearing 205 degree and q moves 30km on a bearing
Mkey [24]

Answer:

(a) By cosine rule, /PQ/2=202+152−2×20×15×cos145°

= 400+225−600cos145°

= 625+600×0.8192

= 491.52+625

/PQ/2=1116.52⟹/PQ/=1116.52−−−−−−√=33.41

≊33km ( to the nearest whole number)

(b) By sine rule,

sin<QPR15=sin14533.41

sin<QPR=15sin14533.41

sin<QPR=15×0.573633.41=0.2575

<QPR=14.92°

∴ Bearing of Q from P = 25° + 14.92° = 39.92°.

≊40° (to nearest whole number)

Step-by-step explanation:

hope it helps

...

6 0
3 years ago
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