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4 years ago

5

The box plots show the target heart rates of men 20-40 years olf and men 50-70 which statement is best supported by the informat

ion

1 answer:

guapka [62]4 years ago

7 0

D should be your correct answer.

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Calculate the sum of 45 and 39

Jlenok [28]

Answer:

84

Step-by-step explanation:

45 + 39 = 84

4 0

3 years ago

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Is it possible for one body to be at rest and moving at the same time? Why is that?

Anuta_ua [19.1K]

Answer:

yes

Step-by-step explanation:

it is possible that a body can be moving and at rest at the Same time. this is relative motion. an object that seem to be in motion for one subject can be stationary for another.

For example, A passenger in a bus. he/she is moving for a person walking on the pathway. but for the passenger next to him/her, they are at rest.

8 0

4 years ago

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How many liters of water containing 7 grams of salt per liter must be combined with x liters of water which contains y grams [y

iVinArrow [24]

Answer:

$\frac{(2-y)x}{5}\text{ litres}$

Step-by-step explanation:

Let l litre of 7 grams of salt per litre is combined with x litres of water which contains y grams of salt per litre to yield a solution with 2 grams of salt per litre.

Thus,

Salt in l litre + salt in x litre = salt in resultant mixture

7l + xy = 2(l +x)

7l + xy = 2l + 2x

7l - 2l = 2x - xy

5l = x(2-y)

$\implies l =\frac{x(2-y)}{5}$

Hence, $\frac{x(2-y)}{5}$ litres of 7 gram of salt per litre is mixed.

5 0

3 years ago

Factor 64r^2 −9s^2 ANSWER ASAP I WILL GIVE BRAINLEST<br><br> .

GarryVolchara [31]

(8r+3s)(8r-3s) dont have working but noticed that it is the difference of two squares

3 0

2 years ago

Daria is running a 30km race. She has completed 6km so far. What percent of the race has she completed?

Scorpion4ik [409]

Answer:

20%

Step-by-step explanation:

6/30 = .2 therefore she has ran 20% or 1/5 of the race

6 0

4 years ago