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2 years ago

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Mathematics

1 answer:

aev [14]2 years ago

4 0

The is The 103.8 Cause Of the math is correct

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in a test correct answer are given positive numbers and for incorrect negative numbers jack scored in successive rounds were-65,

eimsori [14]

Answer:

Jack scored a total of -40

Step-by-step explanation:

Arithmetic

Jack took a test where the correct answers are given as positive numbers and the incorrect answers are negative numbers.

The scores were

-65,-10,-15,20,30

The total score is the arithmetic sum of all scores, including their signs:

Total score: -65-10-15+20+30

Total score: -40

Jack scored a total of -40

4 0

3 years ago

What is the answer????

dem82 [27]

E I think I am not sure though.

6 0

2 years ago

2> -2-c. how would I graph this?

REY [17]

Answer:

-4< c

Step-by-step explanation:

2> -2-c

Add 2 to each side

2+2> -2+2-c.

4 > -c

Divide each side by -1. Remember that dividing by -1 will flip the inequality.

4/-1 < -c/-1

-4< c

6 0

2 years ago

If r = 9, b = 5, and g=-6, what does (r+b-g) (b+g) equal? O-20 O-8 08 O 19 O 20

Colt1911 [192]

Answer:

-20...........................

7 0

11 months ago

Vavilen inflated a huge balloon in 19 minutes. Then he poked a hole in the balloon so that it slowly leaked air out until it was

kaheart [24]

Considering balloon to be an spherical object

Volume of sphere = $\frac{4}{3}\pi r^3$ , where r is the radius of sphere.

After 19 minutes ,If radius of balloon changes from r to R, the Volume changes from V to V'.

V'= $\frac{4}{3}\pi R^3$ ,

As given,rate at which the air leaked out of the balloon (in liters of air per minute) was half of the rate at which Vavilen inflated the balloon.

Also, $\frac{dR}{dt}=2 \times \frac{dr}{dt}$

Now, again the radius changes from R to r.So, Volume changes from V' to Back to V.

Time taken by the balloon to deflate = 38 minutes

But there is no relation between time and volume of Balloon.

So, we can't predict at which rate balloon is deflating or inflating.Apart from the statement given in Question: $\frac{dR}{dt}=2 \times \frac{dr}{dt}$

7 0

3 years ago

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