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4 years ago

Panel 1 is the answer choice Panel 2 is the question

Mathematics

1 answer:

Ierofanga [76]4 years ago

8 0

D is the midpoint of A and B
A = (0,s)
B = (r,0)

Add up the x coordinates to get 0+r = r. Then cut that in half to get r/2
Similarly, do the same for the y coordinates: s+0 = s ---> s/2

So the location of point D is (r/2, s/2)

Answer: Choice C

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#15For his science experiment, Julio placed a pan of water in his refrigerator to see how long it would take to evaporate. After

melamori03 [73]

The amount of water in the pan at start is 320 ml.

It takes 16 days until no water remains in the pan.

Step-by-step explanation:

Julio placed a pan of water in his refrigerator to see how long it would take to evaporate.

Let, the volume of water in the the pan during the start be 'x' milliliters.

After 2 days, he found that the water in the pan got reduced to 280 ml
After 4 days, he found that the water in the pan got reduced to 240 ml.

Therefore, the difference in the volume of water within 2 days can be calculated using the given data.

The amount of water reduced in 2 days = volume of water remained after 2 days - volume of water remained after 4 days

⇒ 280 - 240 = 40 milliliters.

In can be determined that :

For 2 days the water gets evaporated by 40 milliliters.
Thus, Each day 20 milliliters of the water gets evaporated from the pan.

To find the amount of water 'x' in the pan at start :

Before 2 days, the water in the pan is 40 milliliters greater than the water in the pan after 2 days.

The amount of water after 2 days is already given in the question itself which is 280 ml.

⇒ x = 280 + 40

⇒ x = 320 ml.

The amount of water in the pan at start is 320 ml.

To find the no. of days until no water remains in the pan :

The number of days at which all the water gets evaporated is calculated by,

⇒ Total milliliters in the pan at start / No.of milliliters evaporated per day

⇒ 320 ml / 20 ml

⇒ 16 days.

It takes 16 days until no water remains in the pan.

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4 years ago

Solve the following: x²=4(mod6)

Ksivusya [100]

Answer:

$x_{1} = 2, ▪︎ x_{2} = -2$

Step-by-step explanation:

${x}^{2} = 4 (mod6)$

${x}^{2} = 4$

$x =±2$

$x_{1} = 2, ▪︎ x_{2} = -2$

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3 years ago

What is a first step to isolate the variable ?btw it’s for iready lol

kirza4 [7]

Answer:

The first step would be to multiply 2x - 1 by 6, which would be 12x - 6 .

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3 years ago

Read 2 more answers

A box is 16 cm long 10 cm wide and 19 cm high what is its volume ?

Advocard [28]

Answer:

3040cm

Step-by-step explanation:

you simply multiply 10 by 19 to get 190 than do 190 times 16 where u would go 6 times 0 =0 6 times 9 =54 leave the 4 carry the 5 than 6 times 1 is 6 but add the 5 to get 1140 than for the 1 simply put a placeholder 0 than just put 190 since you're multiplying by one to get 3040

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3 years ago

13. Translate the following verbal phrase

Artyom0805 [142]

a) algebraic expression

$\frac{3+x}{5}=10$