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
adelina 88 [10]
3 years ago
13

Donte simplified the expression below.

Mathematics
1 answer:
Trava [24]3 years ago
8 0
He did not apply distributive property correctly for 4(1 + 3i)

Instead of 3i, it should be 12i.
You might be interested in
Test your solution in the equation 0.6+15b+4=25.6
sleet_krkn [62]

Answer:

b = 21/15

Step-by-step explanation:

0.6+15b+4=25.6

15b + 4.6 = 25.6

15b = 25.6 - 4.6

15b = 21

b = 21/15

Test:

0.6 + 15*21/15 + 4 = 25.6

06 + 21 + 4 = 25.6

7 0
3 years ago
Read 2 more answers
[Precalculus] Find the area of this triangle:
Aleonysh [2.5K]

check the picture below.


notice, by drawing the altitude from C, we end up with a 30-60-90 and a 45-45-90 triangle, thus we use the 30-60-90 and 45-45-90 rules as you see there.


\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=\stackrel{w}{6\sqrt{3}}+\stackrel{y}{6}\\ h=6 \end{cases}\implies A=\cfrac{1}{2}(6\sqrt{3}+6)(6) \\\\\\ A=18\sqrt{3}+18\implies A=18(1+\sqrt{3})

8 0
3 years ago
Read 2 more answers
Q10: Determine the eccentricity, the type of conic, and the directrix for r = 11/6-5cos theta.
Marta_Voda [28]

Answer:

Eccentricity = 5/6

Type of conic section; Ellipse

Directrix; x = -11/5

Step-by-step explanation:

The first step would be to write the polar equation of the conic section in standard form by multiplying the numerator and denominator by 1/6;

r=\frac{\frac{11}{6} }{1-\frac{5}{6}cos theta }

The polar equation of the conic section is now in standard form;

The eccentricity is given by the coefficient of cos theta in which case this would be the value 5/6. Therefore, the eccentricity of this conic section is 5/6.

The eccentricity is clearly between 0 and 1, implying that the conic section is an Ellipse.

Since the conic section is in standard form, the numerator is the product of eccentricity and the value of the directrix, that is;

e*d = 11/6

5/6*d = 11/6

d = 11/5

Since the denominator has a minus sign then the ellipse opens towards the right and thus the equation of its directrix is;

x = -11/5

3 0
3 years ago
Read 2 more answers
Denise has $4.25 and needs to buy school supplies. She has a package of pencils that costs $1.75, a notebook that costs $1 and s
Alex

Answer:

6 erasers

Step-by-step explanation:

The pencils and the notebook together cost $2.75, from there you can calculate how many erasers.

1 eraser would bring the total to $3, therefore Denise can buy $1.25 more of erasers which is 5. 3 + 1.25 is $4.25. therefore Denise can buy 6 erasers

7 0
3 years ago
Read 2 more answers
OKAY CAN SOMEONE PLEASE ANSWER THIS ALREADY!? :) SOMEONE KEEPS DELETING THIS QUESTION AND IVE BEEN ASKING FOR LIKE 2 WEEKS LOL!
Eva8 [605]
"Factoring Quadratic Polynomials into Linear Factors. If x 1 and x 2 are the roots of quadratic polynomial of a x 2 + b x = c (i.e.the root of equation of a x 2 + b x + c = 0 ), then a x 2 + b x + c = a ( x − x 1 ) ( x − x 2 ) .This is the formula of factoring quadratic polynomial into factors."
Hope this helps!!!
4 0
4 years ago
Read 2 more answers
Other questions:
  • The amount of an ordinary $9000.00 annuity for 3 years at 12 percent compounded quarterly is _______? Show Work
    14·2 answers
  • Convert this equation to standard form: y=1/2x + 2/3
    11·1 answer
  • Cynthia decides she is going to purchase a used passenger car. Her grandparents agree to pay for 50% of the passenger car. To ge
    13·2 answers
  • Simplify each expression -1/2(-6+12x)
    8·2 answers
  • Jennifer bought 3 yards of fabric and a spool of thread for $28.10.
    15·1 answer
  • 4x+3y= 12<br><br> X-5y- =-20
    15·1 answer
  • Can someone help me find the answer?
    14·1 answer
  • Divide R2<br>848 in the ratio 3:5.​
    5·2 answers
  • The scatter plot shows a scuba diver’s depth in the ocean. The equation of the trend line shown is y = –3.29x – 10.
    10·1 answer
  • A catering company uses different functions to estimate
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!