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4 years ago

7

If you have sea water, you can make salt. What is the contrapositive of this statement?

1 answer:

gulaghasi [49]4 years ago

5 0

Contrapositive. Switching the hypothesis and conclusion of a conditional statement and negating both. For example, the contrapositive of "If it is raining then the grass is wet" is "If the grass is not wet then it is not raining."

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CAN SOMEONE PLEASE HELP!!!! determine the value of x. i’ll give you points if you answer!

salantis [7]

Answer:

2.4

Step-by-step explanation:

Look up 30-60-90 right triangle and use that formula. Since the angle in the middle is 90 degrees, it should work. The side of x would be double of the given side 1.2... this is what I would do

7 0

3 years ago

Please help me and please answer both questions

Elena-2011 [213]

Answer:

A) 35

B) 22

Step-by-step explanation:

A) just count how many numbers there are after the bar

B) don't count the 14.0s only the 14.2 and aboves

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4 years ago

I need help on this problem please help me.

a_sh-v [17]

Answer:

150 mL

Step-by-step explanation:

Let x represent the quantity of 75% solution needed. The total amount of alcohol in the 60% mixture will be ...

75%·x + 10%·45 = 60%·(x+45) . . . . . there will be x+45 mL of solution in the end

0.15x = 22.5 . . . . . . . . . . . . . . . . . . . . simplify, subtract .60x+4.5

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You will need 150 mL of the 75% solution.

3 0

4 years ago

7x2 - 2x2 = .......................................

natulia [17]

Answer:

10

Step-by-step explanation:

7*2 - 2*2 = 14 - 4 = 10

Plz mark as brainliest!

4 0

3 years ago

Read 2 more answers

At noon Joyce drove to the lake at 30 miles per hour. but she made the long walk back home at 4 miles per hour. How long did she

mars1129 [50]

Answer:

60 miles

Step-by-step explanation:

let d = distance to the lake

Using: time = distance ÷ speed

Create expressions for the time it takes for each journey:

Drive: $t_1=\dfrac{d}{30}$

Walk: $t_2=\dfrac{d}{4}$

If total time = 17 hours

$\implies t_1+t_2=17$

$\implies \dfrac{d}{30}+\dfrac{d}{4}=17$

$\implies \dfrac{17d}{60}=17$

$\implies 17d=1020$

$\implies d=\dfrac{1020}{17}$

$\implies d=60$

Therefore she walked 60 miles

3 0

2 years ago

Read 2 more answers