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
koban [17]
4 years ago
10

Calvin evaluated -2/3 x 5 1/6 using the steps below.

Mathematics
2 answers:
Amiraneli [1.4K]4 years ago
7 0

Answer:

<u><em>In step 2, he confused the multiplication and addition signs.</em></u>

Or <u><em>C</em></u>

Aneli [31]4 years ago
5 0

Answer:

Option C.

Step-by-step explanation:

The given expression is

-\dfrac{2}{3}\times 5\dfrac{1}{6}

Step 1: Rewrite the given expression.

-\dfrac{2}{3}\times (5+\dfrac{1}{6})

Step 2: Using distributive property we get

-\dfrac{2}{3}\times (5)-\dfrac{2}{3}\times (\dfrac{1}{6})      [\because a(b+c)=ab+ac]

Step 3: On multiplication, we get

-\dfrac{10}{3}-\dfrac{1}{9}

Step 4: On addition, we get

\dfrac{-30-1}{9}

\dfrac{-31}{9}

-3\dfrac{4}{9}

In step 2, Calvin confused the multiplication and addition signs

Therefore, the correct option is C.

You might be interested in
Combine these radicals<br> 3V2-5V2<br><br> Plz help<br> Will give Brainlyest
lukranit [14]

Answer:

b

Step-by-step explanation:

because i said so and because i am tired and tired and tired

5 0
3 years ago
Read 2 more answers
El perímetro de un rectángulo es de 72 cm. Halla el área del rectángulo si su largo es el 25% más grande que su ancho
maxonik [38]

Answer:

Las dimensiones del rectángulo son:

ancho = 16 cm

largo = 20 cm

Step-by-step explanation:

Consideración:

La formula del perímetro de un rectángulo es:

perímetro = 2(largo + ancho)

25% más grande = 125% = 125/100 = 1.25

Planteamiento:

2(a+b) = 72

b = 1.25a

a = longitud del ancho

b = longitud del largo

Desarrollo:

de la primer ecuación del planteamiento:

a+b = 72/2

a+b = 36

b = 36 - a        Ec. 3

Igualando la segunda ecuación del planteamiento con la Ec. 3:

1.25a = 36 - a

1.25a + a = 36

2.25 a = 36

a = 36/2.25

a = 16

de la Ec. 3:

b = 36 - a

b = 36 - 16

b = 20

Comprobación:

de la primera ecuación del planteamiento:

2(a+b) = 72

2(16+20) = 72

2*36 = 72

4 0
2 years ago
What is the volume of this prism? (photo included)
Ivenika [448]
In my opinion I think it 35
4 0
3 years ago
Find the values of x and y that make the quadrilateral a parallelogram.
Brums [2.3K]
Answer =

X = 3

Y = 4
4 0
3 years ago
What is a polynomial with a single root at x = -1 and a double root at x = 6?
Kazeer [188]
In article <[email protected]>,
[email protected] (Hauke Reddmann) wrote:

<span>> Let a*x**3+b*x**2+c*x+d=0 have a double and a single root.
> What's the value of the single root?</span>

2 3
d (-9 d a + 4 d b c - c )
----------------------------------
2 2 2 2 4
6 d c a + 4 d b - 5 b c d + c

<span>or any other expression equivalent under </span>

2 2 3 2 2 3
(27 d a + 4 b d - 18 c a d b - b c + 4 c a) = 0

which is the discriminant condition for the double root to occur (a being
nonzero assumed).

Maple verification:

> f:=a*x^3+b*x^2+c*x+d;
3 2
f := a x + b x + c x + d

> dis:=factor(resultant(f,diff(f,x),x));
2 2 3 2 2 3
dis := a (27 d a + 4 b d - 18 c a d b - b c + 4 c a)

>
factor(subs(x=d*(-9*d^2*a+4*d*b*c-c^3)/(6*d^2*c*a+4*d^2*b^2-5*b*c^2*d+c^4),f));

3 4 2 3 2 3 3 3 2 2 2 4
d (-27 d a + 36 d a b c - 9 d a c + 16 d b - 24 d b c + 9 d b c

6 2 2 3 2 2 3 /
- c ) (27 d a + 4 b d - 18 c a d b - b c + 4 c a) /
/

2 2 2 2 4 3
(6 d c a + 4 d b - 5 b c d + c )


<span>> (Bonus points if it's possible to write the answer without
> using fractions, just as polynome(a,b,c,d) )</span>

Impossible, multiplying all a,b,c,d by the same factor lambda should
preserve the solution but cannot preserve a polynomial expression.
<span>--</span>
4 0
4 years ago
Other questions:
  • a computer store buys a computer for $24 and sells it for $91.20 .what is the percent of increase in the price?pls someone help
    8·1 answer
  • Plzzz help and show working out *DONT JUST PUT THE ANSWER*<br><br><br> Ignore my working out
    14·1 answer
  • A regression was done for 20 cities with latitude as the explanatory variable (x) and average january temperature as the respons
    8·1 answer
  • A rectangular section of wilderness will set aside a new life refuge 5×105 meters by 4×10^4 meters. Find the area of land in squ
    10·1 answer
  • Solve each expression using the correct order of operations,<br>7- 5 + 3 x 10<br>​
    14·2 answers
  • On a sunny morning, Tiffany rode her bicycle to a farm that sold baskets of watermelons for $7.32 each and a basket of pomegrana
    15·1 answer
  • The most popular pizza at Pizza Parlor is a large pizza with a 12- inch radius. which of the following best represents the circu
    11·2 answers
  • Is 6/5 greater than 2/3
    14·2 answers
  • Can someone help me find a texting app that I can use to text my friends who have phones but don't have the app? I don't have a
    9·1 answer
  • ANSWER IN LESS THEN 5 MINS PLEASE HURRY <br><br> VVVVVVVVVVVVVVVVVVVV
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!