1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arisa [49]
3 years ago
11

Given the problem below what mistake did Bob make in solving the equation? Bob and his friends paid $30 for 3 sandwiches and and

3 bottles of water.
-Each sandwich cost the same amount.
-The bottles of water cost $1.50 each.
The equation 3(x + 1.50) = 30 can be used to determine x, the cost of each sandwich. Bob solved the equation using these steps: 3(x + 1.50) =30
3x + 1.50 = 30
3x = 28.50
x = 9.50
Mathematics
1 answer:
storchak [24]3 years ago
7 0

Answer:

Bob forgot to distribute 3 to 1.50 in the parentheses

Step-by-step explanation:

Bob made the mistake in his first step.

In the equation 3(x + 1.50) = 30, the 3 has to be distributed to both x and 1.50.

But, Bob only distributed it to x, which led him to get the wrong answer.

So, Bob's mistake when solving was that he forgot to distribute the 3 to 1.50

You might be interested in
Y=x^2-6x-16 in vertex form
satela [25.4K]

Answer:

y=(x-3)^{2} -25

Step-by-step explanation:

The standard form of a quadratic equation is y=ax^{2} +bx+c

The vertex form of a quadratic equation is y=a(x-h)^{2} +k

The vertex of a quadratic is (h,k) which is the maximum or minimum of a quadratic equation. To find the vertex of a quadratic, you can either graph the function and find the vertex, or you can find it algebraically.

To find the h-value of the vertex, you use the following equation:

h=\frac{-b}{2a}

In this case, our quadratic equation is y=x^{2} -6x-16. Our a-value is 1, our b-value is -6, and our c-value is -16. We will only be using the a and b values. To find the h-value, we will plug in these values into the equation shown below.

h=\frac{-b}{2a} ⇒ h=\frac{-(-6)}{2(1)}=\frac{6}{2} =3

Now, that we found our h-value, we need to find our k-value. To find the k-value, you plug in the h-value we found into the given quadratic equation which in this case is y=x^{2} -6x-16

y=x^{2} -6x-16 ⇒ y=(3)^{2} -6(3)-16 ⇒ y=9-18-16 ⇒ y=-25

This y-value that we just found is our k-value.

Next, we are going to set up our equation in vertex form. As a reminder, vertex form is: y=a(x-h)^{2} +k

a: 1

h: 3

k: -25

y=(x-3)^{2} -25

Hope this helps!

3 0
3 years ago
Does the height of the shooter affect the number of goals scored in a netball match
Art [367]

Answer:

Yes because a taller person would have a higher chance of getting the ball in the net

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
You need to cover the playground of a child development center with mulch. The playground is 125 feet long and 60 feet wide. You
alexira [117]
Volume of this child development center=long x width x deep.
we expressed all magnitudes (long, width and deep) in yards.
Data:
long=125 ft=125 ft * (1/3 yd/ft)=125/3 yd
width=60 ft=60 ft * (1/3 yd/ft)=20 yd
deep=6 in * (1 yd / 36 in)=1/6 yd

We calculate the volume:
volume=(125/3 yd)*(20 yd)*(1/6 yd)=138.8888....yd³≈139 yd³

Answer: 139 yd³
6 0
3 years ago
I am trying to fill in a table for simple interest. I know the basic formula but can't do it unless I know interest,principal,to
ICE Princess25 [194]
The formula for simple interest is Interest= Principle·Rate·Time If one of these is missing, just plug in what you know. For example, if time if the principle is missing just plug in the rest. Say the interest is $264, the rate is 6% and the time is 2 years. When its plugged it, it looks like this: 264= P ·0.06·2 Now you can work it out 0.06·2 is 0.12 so 264=P 0.12. Just divide by 0.12 and your done! You can do this with any letter and just put in the info you know. I hope that this helps you! :)
8 0
3 years ago
A heavy rope, 60 ft long, weighs 0.3 lb/ft and hangs over the edge of a building 130 ft high. (Let x be the distance in feet bel
Oduvanchick [21]

Answer:

Presenta Don Quijote de la Mancha: autor,

fechas, tema, personajes.

2. Relata las diferentes etapas de la historia

de don Quijote de la Mancha.

3. Elige un adjetivo para calificar a don Quijote

y a Sancho Panza y justifica: aventurero,

razonable, loco, heroico, te

Step-by-step explanation:

Presenta Don Quijote de la Mancha: autor,

fechas, tema, personajes.

2. Relata las diferentes etapas de la historia

de don Quijote de la Mancha.

3. Elige un adjetivo para calificar a don Quijote

y a Sancho Panza y justifica: aventurero,

razonable, loco, heroico, te

6 0
3 years ago
Other questions:
  • Write the expression that represents length in terms of width for this problem
    6·1 answer
  • What is 6.4X10 to the 8th power meters per second, in kilometers per hour???
    12·1 answer
  • What is 7/81 + 7/9 as a proper fraction
    5·1 answer
  • If angle A and angle B are supplementary angles and angle A is eight times as large as angle ​B, find the measures of angle A an
    11·1 answer
  • Please help me out with this!!!!!!
    8·2 answers
  • Write the equation of the line shown in point-slope form. (2,1) (3,8)
    9·1 answer
  • Markita bought a roll of carpet that is 8.5 feet wide. The maximum area the carpet will cover is 136 square feet. What is the lo
    13·1 answer
  • I WILL GIVE YOU POINTS Pls help meh :c
    11·2 answers
  • A biker travels 10 miles in two hours, what is his speed?
    10·2 answers
  • Peggy was taking a timed 20-question test. She was able to correctly answer 80% of the questions but had to skip the rest. How m
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!