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svlad2 [7]
3 years ago
14

Solve this pls :) -3 + 6 = ?

Mathematics
1 answer:
nadya68 [22]3 years ago
6 0

Answer:

3

Step-by-step explanation:

-3+6=? -3+6=6-3

6-3= 3

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Issac tosses a quarter off of a bridge, creating the shape of a parabola. The parabola can be represented by the equation h=-16t
andreyandreev [35.5K]

Answer:

Step-by-step explanation:

a) the equation representing the parabola is expressed as

h = -16t² - 4t + 20

c) to determine the height after 25 seconds, we would substitute 25 for t into the given equation. It becomes

h = -16(25)² - 4(25) + 20

h = - 10000 - 100 + 20

h = - 10080

d) when the coin lands on the ground, the height would be 0. Therefore,

-16t² - 4t + 20 = 0

Dividing both sides of the equation by 4, it becomes

- 4t² - t + 5 = 0

- 4t² - 5t + 4t + 5 = 0

- t(4t + 5) + 1(4t + 5) = 0

- t + 1 = 0 or 4t + 5 = 0

t = 1 or t = - 5/4

Since t cannot be negative, then t = 1 second

4 0
2 years ago
The sum of two numbers is 24 and their difference is 2. What are the numbers?
miskamm [114]

Answer:

11 and 13

Step-by-step explanation:

24÷2=12

2÷2=1

12-1=11

12+1=13

13-11=2

13+11=24

5 0
2 years ago
Read 2 more answers
Can someone please help with this problem and explain. Please answer quickly, thx :) (picture included)
Anna007 [38]
Exponential laws
(x^{m})^{n}=x^{mn}
x^{\frac{m}{n}}=\sqrt[n]{x^{m}}

so
(m^(2/3))^(1/2)=m^(2/3 times 1/2)=m^(2/6)=m^(1/3)= \sqrt[3]{m^{1}}= \sqrt[3]{m}
3 0
3 years ago
∠A and \angle B∠B are complementary angles. If m\angle A=(6x+3)^{\circ}∠A=(6x+3)
Wewaii [24]

Answer:

Step-by-step explanation:

The angles are complimentary, so they add to 90

6x + 3 + 7x + 9 = 90             Combine like terms

13x + 12 = 90                         Subtract 12 from both sides

13x = 90 - 12                          Combine

13x = 78                                 Divide both sides by 13

x = 6

<A = 6x + 3

<A = 6*6 + 3

<A = 36 + 3

<A = 39

8 0
2 years ago
If the measurement a is 69 and measurement a and b are complementary what is measurement b
MA_775_DIABLO [31]

Answer:

nice and

since it is complementary then a +b = 90

and substitution gives

69 + b = 90

b = 21

hope this helped and brainliest pls

4 0
3 years ago
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