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Maksim231197 [3]
3 years ago
8

Write an addition equation with a positive addend and negative addend and a resulting sum of -8

Mathematics
1 answer:
Ierofanga [76]3 years ago
7 0
-18 + 10 = -8

------------------------------------
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What is 7 x 5/8 because I’m so lost
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Answer: 4.375

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5 0
2 years ago
Read 2 more answers
Zorona weighs 92 pounds. Her weight is 6 pounds more than half of her father’s weight. How much does her father way?
mihalych1998 [28]

Answer:

Zorona's dad wieghs 40 pounds

Step-by-step explanation:

92 ÷ 2 = 46

46 - 6 = 40

hope this helps!

6 0
3 years ago
A model rocket is launched with an initial velocity of 200 ft per second. The height h, in feet, of the rocket t seconds after t
Solnce55 [7]

Answer:

2.10 s, 10.40 s.

Step-by-step explanation:

We know that the height of the rocket is given by the function:

h=-16t^2+200t

We are asked to find the time for which the height of the rocket will be 350 ft. So, for that moment, we know the height but we don't know the time; however, we know that the equation can help us to find the time, doing h=350:

350=-16t^2+200t

The last is a quadratic equation, which can be put in the form at^2+bt+c=0 and solved applying the formula:

t=\frac{-b+-\sqrt{b^2-4ac} }{2a}

So, let's put the equation on the form at^2+bt+c=0 adding 16t^2 and subtracting 200t to each side of the equation; the result is:

16t^2-200t+350=0

So, we note that a=16, b=-200, and c=350.

Then,

t_1=\frac{200-\sqrt{200^2-4*16*350} }{2*16}=2.10

t_2=\frac{200+\sqrt{200^2-4*16*350} }{2*16}=10.40

According to the equation, that are the times for which the height will be 350 ft; that is because the rocket is going to ascend and then to fail again to the ground.

4 0
3 years ago
How many solutions does this have ?
Gemiola [76]
It has one solution that I know of
8 0
3 years ago
Read 2 more answers
Help with questions 21-23 using pemdas
taurus [48]

Answer:

21. 123    22. 6.86 or 6/ 6/7  23. 90

Step-by-step explanation:

21. (6+4)² + (22+10÷2)

     (10)² + (22 + 5)

        100 + 27

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22. (11+42-5) ÷ (11-4)

         48 ÷ 7

        6.85 or 6 6/7

23. (17-3) × (14 - 6) -22

         14 × 8 - 22

         112 - 22

           90

5 0
3 years ago
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