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8_murik_8 [283]
3 years ago
12

Please help me! i really need it:( this is geometry btw​

Mathematics
1 answer:
loris [4]3 years ago
7 0

Answer:

The answer is A

Step-by-step explanation:

I solved using surface area

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Can someone help me with 5 and 6? How do I put it? Will mark brainliest!
n200080 [17]

Answer:

5.

2 + 3 < y

6.

y + 2 ≥ 6

5 0
2 years ago
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How many liters of a 10% antifreeze solution and a 40% antifreeze solution must be mixed to make 15 liters of a 25% solution? Ro
butalik [34]

Answer:

7.5 liters of a 10% antifreeze solution AND

7.5 liters of a 40% antifreeze solution

Step-by-step explanation:

According to the question,we were asked to find out how many liters of 10% anti freeze solution and 40% anti freeze each to make a 15 liters 25% mixture

Let’s call

the amount of liters needed of our 10% solution “x”. So, how

many liters do we need of the 40% solution? Well, there are 15

liters in total, x liters have been spoken for, so what remains

of our allotted 10 liters then, is 15-x.

Now let's solve for "x"

10% of x + 40% of (15 - x) = 25% of 15 liters

0.1x + 0.4(15 - x) = 0.25(15)

0.1x + 6 - 0.4x = 3.75

Collect the like terms and we have

0.3x = 2.25

x = 2.25 × 3

X = 7.5(Liters for the 10% anti freeze solution)

The 40% solution= 15 - 7.5 = 7.5 liters

Since "X" was used to fill for the unknown amount of 10% anti freeze solution,we have 7.5 liters of the 10% solution and another 7.5 liters for the 40% solution to end up with 15 liters of the desired 25% solution.

8 0
3 years ago
Hi, can I send screenshot?​
Sati [7]
Yes you can i think........
4 0
3 years ago
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Use technology or a z-score table to answer the question.
FinnZ [79.3K]

Answer:

C

Step-by-step explanation:

First we find the z-score.

z = (x - μ) / σ

z = (520 - 500) / 60

z = 0.33

Using a calculator or z-score table:

P(z < 0.33) = 0.6293

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6 0
3 years ago
What is the length of segment RS?
Evgesh-ka [11]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
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