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3 years ago

What is the location of the point on the number line that is 3/7 of the way from A= -4 to B=17?

Mathematics

2 answers:

Margaret [11]3 years ago

6 0

The point that is 3/7 of the way between -4 and 17 is 5

____ [38]3 years ago

5 0

Answer:

Step-by-step explanation:

Distance between the given points is 17 - (-4) = 21 units

The location of the point is -4 + 9 = 5 (answer)

3/7 of the way from A = 21 * 3/7 = 9 units

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21.

djyliett [7]

Answer:

4.8

Step-by-step explanation:

add all values and divide it by 5

5 0

2 years ago

If every gram of salt is 20.9% chlorine, how much is required to make a 220 ppm chlorine solution with 350 grams of water?

Temka [501]

Answer:

The amount of salt required is 0.3685 grams.

Step-by-step explanation:

20.9% of 1 gram of salt is chlorine, which means the grams of chlorine in 1 gram of salt are

$\dfrac{20.9\%}{100\%} *1\: gram = 0.209g\: \text{chlorine}$

Now, to make 220 ppm solution, it must be that

$\dfrac{220}{10^6} = \dfrac{y}{350+y},$

where $y$ is the grams of chlorine required.

We rearrange the equation and solve for $y:$

$220(350+y) = 10^6y$

$77000+220y =10^6y$

$77000 = (10^6-220)y$

$y = \dfrac{77000}{999780}$

$\boxed{y= 0.07702g}$

since 1 gram of salt has 0.209 grams of chlorine, 0.07702g of chlorine corresponds to

$\dfrac{0.07701}{0.209} = 0.3685g {\text{ of salt. }$

Thus the amount of salt required is 0.3685 grams.

7 0

3 years ago

Standar form of 1.204751131

densk [106]

1.204751131 × $10^{0}$

6 0

3 years ago

The path between three landmarks in a national park form a right triangle. The oldest living evergreen tree is at point A, the

Akimi4 [234]

Answer:

347yards

Step-by-step explanation:

3 0

3 years ago

Help for number 4 part a and part b

djyliett [7]

Part A: 7/10 because .7 represents 70/100 of a whole, or 7/10.

Part B: I think 1 and 89/100 because 89/100 represents that fraction

These are my answers, so I may be wrong.

Hope I helped, and good luck!

4 0

3 years ago