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
Scilla [17]
3 years ago
8

Evaluate −x2+4x+1 when x=−2.

Mathematics
1 answer:
Misha Larkins [42]3 years ago
6 0
Y = -(-2)^2 + 4(-2) + 1
y = -4 - 8 + 1
y = -11
You might be interested in
Determine the domain of 3x+2/x-4
Kaylis [27]
Since the x value can be changed to anything other than 4 (because then you would be dividing by 0 in x-4), the answer is: All real numbers except 4.
4 0
4 years ago
Una embarcación tenía 120 tripulantes al naufragar parece el 30% los sobrevivientes el 25% son casados¿ Cuántos de los sobrevivi
Wewaii [24]

Answer:

Solteros= 27

Step-by-step explanation:

<u>Entiendo que de los 120 tripulantes, sobrevivió el 30%. Y de los sobrevivientes, 25% son casados.</u>

<u></u>

Primero, debemos calcular la cantidad de sobrevivientes:

Sobrevivientes= 120*0.3= 36

Ahora la cantidad de casados, y por diferencia los solteros:

Casados= 36*0.25= 9

Solteros= 36 - 9

Solteros= 27

7 0
3 years ago
In if GS ⊥ XJ and XJ⊥EA what is true about GS and EA
svlad2 [7]

Answer:

(GS) || (EA)

Step-by-step explanation:

When two lines are parallel, all four angles formed by the intersection of the two lines are right angles, meaning their angle measures are (90°). This means that alternate interior angles are congruent because all alternate interior angles measures equal (90°). Therefore, by the alternate interior angles converse theorem, lines (GS) and (EA) are parallel.

The alternate interior angles converse theorem states if two angles are congruent and they have the relation of being a part of two lines intersected by a third line, then the two non-intersecting lines are parallel.

6 0
3 years ago
Read 2 more answers
HELP NEEDED ASAP WILL GIVE 5 STAR RATING AND BRAINLIEST!
stealth61 [152]

Answer:

The answer to your question is: ∠K   = 138°

Step-by-step explanation:

m∠N = 42°

m∠K = ?

The sum of all the internal angles in a quadrangle equals 360°

then

        ∠N + ∠L + ∠M + ∠K = 360°

        ∠N = ∠ L   and ∠M = ∠K

So, 2 ∠N + 2 ∠K = 360

Substitution

       2 (42) + 2 ∠K = 360

       84  + 2 ∠K = 360

       2 ∠K = 360 - 84

       2 ∠K = 276

      ∠K  = 276 / 2

     ∠K   = 138°

8 0
3 years ago
Mary has a recipe for cranberry bread. she uses 6 and 2/3 cups of flour to make 2 loaves of cranberry bread.
sweet [91]

Answer: it’s the third one

Step-by-step explanation:

It is

8 0
2 years ago
Other questions:
  • The solution set of x(x-5) is greater than or equal to 0 is
    8·1 answer
  • Which element is always present in a combustion reaction?
    14·1 answer
  • Easy question about triangles that I forgot what they look like so I feel too lazy to look them up (13 POINTS)
    10·2 answers
  • Michael drives to work each day. He travels a total of 160 miles at the end of the work week. How far is Michael's house from wo
    12·1 answer
  • Evaluate<br> a/b for a = -6 and b = -2.<br> -12
    7·1 answer
  • Name three rational numbers that’s are between 7 and 8?
    6·2 answers
  • Last week you worked 24 hours, and earned $240.
    14·2 answers
  • Can you help me please​
    11·2 answers
  • Use the distributive property to write an equivalent expression to -4(p+ 4) that
    7·1 answer
  • What is the number sentence for "1 less than N is the sum of Z and<br> 2"?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!