2. Gerald was given the following problem to solve for the length of the "?". He has made a mistake in his work.
Identify and describe how he made his mistake. Then, solve the problem correctly.
Gerald's work

Emily's average speed will be 62 mph for the trip

Average speed is defined as the ratio of the total distance traveled by a body to the total time taken for the body to reach its destination.

Emily travels 186 miles in three hours.

To determine Emily's average speed, we can divide the distance she traveled by the time it took her to travel that distance. Her average speed would be:

⇒ average speed = distance / time

⇒ average speed = 186 miles / 3 hours

Apply the division operation, and we get

⇒ average speed = 62 mph

This is Emily's average speed for the trip.

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Answer:

20%

Step-by-step explanation:

Answer:

x = 50

Step-by-step explanation:

The interior angles of a Pentagon adds up to 540.

90 + 125 + 125 + 2x + 2x = 540

340 + 4x = 540

4x = 200

x = 50

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)  

Step-by-step explanation:

Answer:

x = -1

Step-by-step explanation:

3(x + 1) = -2(x - 1 ) - 4

use the distributive property to get rid of the parentheses. on -2 and -1 they cancel each other out so it becomes + 2. now you have:

3x + 3 = -2x + 2 - 4 (+2 and -4 are like terms so they become -2. so technically its 3x + 3 = -2x -2)

get +3 on the other side by subtracting it from itself and then subtracting it from -2 so it becomes -5.

3x = -2x - 5

get -2x on the other side by adding 2x to itself then adding 2x to 3x so it becomes 5x

5x = -5

divide 5 from -5 and you get x = -1

6

Step-by-step explanation:

B1=6

B2=3

A=1/2

A=27

H=?

A=1/2h(6+3)

A=1/2h(9)

A=9/2

27=4.5

H=27/4.5

H=6

Answer:

10.4

Step-by-step explanation:

So let's do the basic, adding. 5 kilometers on Saturday and 4 on part of Sunday. That's 9. So let's save that. Now for the meters. We know that there are 1000 meters in a kilometer. So add up 600 and 800. That gives you 1400 meters total. Now if we divide 1400 by 1000, we get 1.4. So that is how many kilometers he rode on Friday and and the other part of Sunday. SO now we just add everthing up. 9km+1.4km = 10.4, your answer

Answer:

$3.25 multiplied by the hour

Step-by-step explanation:

The slope of the situation if, Martha earns $15 per hour for babysitting, The parents always give her a $5 tip is $15 per hour.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively.

Given:

Martha earns $15 per hour for babysitting,

The parents always give her a $5 tip,

The equation for the total money earned by Martha can be written as shown below,

The total money earned = Money per hour for babysitting × number of hours + tip

Assume the total money earned is y, the number of hours is x,

y = 15x + 5

As you can see, the above equation is in slope intercept form,

Slope = $15 per hour

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Answer: 0

Step-by-step explanation:

the answer is 0

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

Explanation:

Think of z as having 1 zebra

2z means we have 2 zebras

If we started with 2z, and subtracted off 2z, then we're left with 0 zebras. We write this as 0z or just 0 since 0 times anything is 0.

---------

As another example:

Let's say we wanted to simplify 5z - 2z

Well that's the same as saying "5 zebras take away 2 zebras". We'd be left with 3 zebras because 5-2 = 3

Since 5-2 = 3, this leads to 5z-2z = 3z. The difference is that I tacked 'z's onto each number.

Answer:

OA

Step-by-step explanation:

The graph will move from right to left in ascending order

Answer:

I am you helper

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

128°

Step-by-step explanation:

180-52=128

Answer:

44

Step-by-step explanation:

Answer: 44

Step-by-step explanation:

[5 - 3(8/4)] + (5^5/10^2)+(20-6.25) = 44

Answer:

200 to 70

Step-by-step explanation:

well if it were 100 it would be 20 people to 7 so scale it up by 10 and you get 200 to 70 people

ni p*t* idea pibe :)

Answer:

<E=<K

DE=JK

Step-by-step explanation:

The first two answers are correct because they are corresponding. One way of solving is going through each answer and comparing the measurements, if they are congruent then the statement is true, if not it is false.

1) <E=88 and <K=88, since 88=88 this is a true statement.

2) DE=14 mi and JK=14 mi, since 14=14 this is a true statement.

3) CD=14 mi and KL=25 mi, since 14[tex]\neq[/tex]25 this is a false statement.

4) EB=25 mi and MJ=14 mi, since 25[tex]\neq[/tex]14 this is a false statement.

Answer:

0.0769

Step-by-step explanation:

Answer:

286 minutes

Step-by-step explanation:

can you give brainlest or good review

Answer:

Hello!

Let's call X to the number of minutes of long-distance calls you plan to make.

The cost of plan A is given by 25%2B0.05X

The cost of plan B is given by 5%2B0.12X

Plan B is advantageous when its cost is lower than plan A's. Therefore, we set the inequality

5%2B0.12X+%3C+25%2B0.05X

And then solve for X. This will give us the range of minutes for which B is more convenient.

Subtract 5 from both sides of the inequality to get:

0.12X+%3C+20%2B0.05X

Now subtract 0.05X:

0.12X+-+0.05X+%3C+20

0.07X%3C20

Finally, divide by 0.07 to get:

X+%3C+20%2F0.07

X++%3C+285.71

So plan B is advantageous if you plan to use less than 286 minutes of long distance calls.

I hope this helps!

Step-by-step explanation:

Answer:

59,000

Step-by-step explanation:

Answer:

[tex] V_{total} = 26460 \pi~cm^3 [/tex]

[tex] V_{total} = 83127~cm^3 [/tex]

Step-by-step explanation:

The solid is made up of 2 cones and a cylinder.

Upper cone:

radius = 21 cm

height = h_1 = 70 cm - 35 cm = 35 cm

Cylinder:

radius = 21 cm

height = h_2 = 35 cm

Lower cone:

radius = 21 cm

height = h_3 = 40 cm

[tex] V_{total} = V_{upper~cone} + V_cylinder} + V_{lower~cone} [/tex]

[tex] V_{total} = \dfrac{1}{3} \pi r^2 h_1 + \pi r^2 h_2 + \dfrac{1}{3} \pi r^2 h_3 [/tex]

[tex] V_{total} = \dfrac{1}{3}(\pi)(21~cm)^2(35~cm) + (\pi)(21~cm)^2(35~cm) + \dfrac{1}{3}(\pi)(21~cm)^2(40~cm) [/tex]

[tex] V_{total} = \dfrac{1}{3}(\pi)(441~cm^2)(35~cm) + (\pi)(441~cm^2)(35~cm) + \dfrac{1}{3}(\pi)(441~cm^2)(40~cm) [/tex]

[tex] V_{total} = (147~cm^2)(35~cm)(\pi) + (441~cm^2)(35~cm)(\pi) + (147~cm^2)(40~cm)(\pi) [/tex]

[tex] V_{total} = 5145\pi~cm^3 + 15435\pi ~cm^3 + 5880\pi~cm^3 [/tex]

[tex] V_{total} = 26460 \pi~cm^3 [/tex]

[tex] V_{total} = 83127~cm^3 [/tex]

Answer:

59% decrease

Step-by-step explanation:

Answer:

342

Step-by-step explanation

14+14+14 = 42

42 + 300 = 342

Answer:

K N O

Step-by-step explanation:

hope this helped you

Answer:

b u t is congruent to k o n

Step-by-step explanation:

because it was just turned

Answer:

Congruent

To be honest they are equal but in this question there is no option as equal so we can choose congruent

Answer:

2 gallons

Step-by-step explanation:

add on 8 until u get 12

plz mark as brainliest

thank you

19NBoli

:)

Answer:

(x−1)(x−2)

Step-by-step explanation:

Answer:

The temperature decreased by 32 degrees.

Step-by-step explanation: