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Semenov [28]
2 years ago
12

Each of the sentences below needs revision to make the sentence clearer, less wordy, or more focused. Match each sentence to its

Mathematics
2 answers:
Lana71 [14]2 years ago
8 0

i give all the credit to the first answer give him or her the brainlyest

Ilia_Sergeevich [38]2 years ago
7 0

Answer:

your answer will be included in the picture i have listed below

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Adam builds model rockets. Where he lives, his backyard is 12 feet below sea level. When he ignites his rocket, it flies a maxim
Mademuasel [1]

Answer:

338 feet

Step-by-step explanation:

350 - 12 = 338

5 0
3 years ago
What are ''vectors and matrixs algebra'' ?​
g100num [7]

Answer:

A matrix is a rectangular table of numbersVectors and matrices are arrays of numbers. The algebra for symbolic operations on them is different from the algebra for operations on scalars, or single numbers. ... It can be said that the matrix algebra notation is shorthand for the corresponding scalar longhand.

3 0
2 years ago
Read 2 more answers
Pls help, thank you
Lemur [1.5K]

Answer:

  • y = -3x² + 7x - 9

Step-by-step explanation:

<u>Given quadratic function:</u>

  • y = ax² + bx + c

<u>Points on the graph:</u>

  • (-2,-35), (1,-5), (3,- 15)

<u>Substitute values of x and y and solve the system of equations:</u>

  • -35 = a(-2)² + b(-2) + c ⇒ -35 = 4a - 2b + c   ⇔ eq 1
  • -5 = a(1)² + b(1) + c ⇒ -5 = a + b + c               ⇔ eq 2
  • -15 = a(3)² + b(3) + c ⇒ -15 = 9a + 3b + c       ⇔ eq 3

<u>Subtract eq 2 from eq 1:</u>

  • -35 - (-5) = 4a - 2b + c - a - b - c
  • -30 = 3a - 3b
  • b = a + 10                                                         ⇔ eq 4

<u>Subtract eq 2 from eq 3:</u>

  • -15 - (-5) = 9a + 3b + c - a - b - c
  • -10 = 8a + 2b
  • b = -4a - 5                                                       ⇔ eq 5

<u>Compare eq 4 and eq 5, solve for a:</u>

  • a + 10 = -4a - 5
  • a + 4a = -5 - 10
  • 5a = -15
  • a = -3

<u>Find the value of b using eq 4:</u>

  • b = -3 + 10
  • b = 7

<u>Find the value of c using eq 2:</u>

  • -5 = -3 + 7 + c
  • c = -5 - 4
  • c = -9

<u>We now have a, b and c:, the function is:</u>

  • y = -3x² + 7x - 9

8 0
2 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!!!! I SUCK AT MATH AND I CAN'T FIGURE THIS OUT!
nikdorinn [45]

Answer:

$25.97

Step-by-step explanation:

2.50+8.75+3+10.25 = 24.50    This is the items be bought and now needs to pay 6% tax.

24.50/100*106 = 25.97

8 0
2 years ago
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[13 + (−19)] × (−7) ÷ (−3)
harina [27]

Answer:

-14

Step-by-step explanation:

c a l c u l a t o r

3 0
2 years ago
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