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
lidiya [134]
3 years ago
7

The sum of the two numbers is 12, and their product is -28.

Mathematics
1 answer:
il63 [147K]3 years ago
4 0
X + y = 12
Xy = - 28
Therefore the answer is B: - 2, 14
You might be interested in
Find Sn for the arithmetic series 5+7+9 + … and determine the value of n for which the series has sum 165.
SVETLANKA909090 [29]

Answer:

see explanation

Step-by-step explanation:

the sum to n terms of an arithmetic sequence is

S_{n} = \frac{n}{2}[2a + (n - 1)d ]

where d is the common difference and a is the first term

here d = 9 - 7 = 7 - 5 = 2 and a = 5, hence

S_{n} = \frac{n}{2}[(2 × 5) + 2(n - 1) ]

                        = \frac{n}{2}(10 + 2n - 2)

                        = \frac{n}{2}(2n + 8)

                        = n² + 4n

When sum = 165, then

n² + 4n = 165 ← rearrange into standard form

n² + 4n - 165 = 0 ← in standard form

(n + 15)(n - 11) = 0 ← in factored form

equate each factor to zero and solve for n

n + 15 = 0 ⇒ n = - 15

n - 11 = 0 ⇒ n = 11

but n > 0 ⇒ n = 11



4 0
3 years ago
USING the Midpoint Formula , POINT A is at (-3,-5) and point M is at (-0.5,0). what are the coordinates of point B
Rasek [7]

\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ A(\stackrel{x_1}{-3}~,~\stackrel{y_1}{-5})\qquad B(\stackrel{x_2}{x}~,~\stackrel{y_2}{y}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left( \cfrac{x-3}{2}~~,~~\cfrac{y-5}{2} \right)~~=~~\stackrel{\stackrel{Midpoint}{M}}{(-0.5~,~0)}\implies \begin{cases} \cfrac{x-3}{2}=-0.5\\[1em] x-3=-1\\ \boxed{x= 2}\\ \cline{1-1} \cfrac{y-5}{2}=0\\[1em] y-5=0\\ \boxed{y=5} \end{cases}

7 0
3 years ago
Find the measure of angle C of a triangle ABC, if angle A=a and angle B= 2a.
erma4kov [3.2K]
3.14 - 3a Radians

Because
180o = 3.14 radian
3 0
2 years ago
John is 3 years older than Susan and khalid is 5 years younger than her . The sum of their ages is 40 .
lapo4ka [179]

Answer:

John is 17,

Susan is 14,

and Khalid is 9.

Step-by-step explanation:

a = John's age

b = Susan's age

c = Khalid's age

Let's set our rules from the given information.

a = b + 3

c = b - 5

a + b + c = 40

Now, we can solve for b through substitution.

(b + 3) + b + (b - 5) = 40

3b - 2 = 40

3b = 42

b = 14

So, now that we have Susan's age, we can follow the rules and see if it holds.

17 + 14 + 9 = 40 Viola!

8 0
3 years ago
Write an equation for the line parallel to the given line that contains C.<br> C(2,8); y = - 4x + 3
Luba_88 [7]

Answer: i love brinly its the best

the value of x is 4, make m||n

Step-by-step explanation:

sorry if this is wrong

3 0
2 years ago
Other questions:
  • E = mc^2 <br> c = ?<br> can anyone help me find the value of c in this equation?
    11·1 answer
  • Determine if the number is written in scientific notation. if not correct it.
    12·1 answer
  • A farmer finds that if she plants 60 trees per acre, each tree will yield 45 bushels of fruit. she estimates that for each addit
    6·1 answer
  • How can you find the gcf and common factors?
    8·1 answer
  • Will give u a crown
    10·1 answer
  • lol, i was doing just fine on this hw until this. Pleeze help! solve for d+2 &gt; 6. I am offering twenty-five Points
    12·1 answer
  • Kiley has a 25% discount coupon for an electronics store. she sees a new cell phone that she wants to buy. after the 25% discoun
    6·1 answer
  • HELP PLEASE ASAP!!! CORRECT GETS BRAINLIEST!!!
    7·1 answer
  • DE is a midsegment of AABC. Find the value of x.
    13·1 answer
  • I NEED HELP!!!! I am currently reviewing for my last test, and i am struggling with this problem. I KNOW WHAT THE ANSWER IS BUT
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!