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nika2105 [10]
3 years ago
13

You need a 35% solution. You are going to mix 15 liters of a 27% solution with an amount of a 50% solution. How much of the 50%

solution should you use?
A) 8 liters
B) 17 liters
C) 23 liters
D) 28 liters
Mathematics
1 answer:
Galina-37 [17]3 years ago
8 0

0.35 (15+x) = 0.27(15) + 0.5x

X = 8 liters

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What is the answer for this problem I need help!
Ksenya-84 [330]

Answer:

x = 6 cm

Step-by-step explanation:

We can write equations for length and width using the information given:

length = 2 + x

width = 2x - 5

Area = (length)(width) = 56

Area = (2 + x)(2x - 5) = 4x - 10 + 2x² - 5x

Simplifying:

Area = 2x² - x - 10 = 56

2x² - x - 66 = 0

Factoring:

(2x + 11)(x - 6) = 0

x = 6, -11/2

We choose the positive number: x = 6 cm

To check, plug in 6 for x:

Area = (2 + x)(2x - 5) = 56

(2 + 6)(12 - 5) = 56

(8 × 7) = 56

56 = 56

8 0
2 years ago
In July, Jannat did yard work for a total of 26 hours. For
slava [35]

Answer:

$9/hr

Step-by-step explanation:

Find how much she earned by dividing 234 by 26:

234/26

= 9

So, Jannat made $9 per hour.

7 0
2 years ago
A lion’s heart beats 12 times in 16 seconds.how many heartbeats will it have in 60 seconds?
Sergio [31]
Hey there!

Here is your answer:

<u><em>The proper answer to this question is "44 times".</em></u>

Reason:

You have to solve it this way:

<u><em>12 heartbeats=16 seconds</em></u>

<u><em>16+16=32</em></u>
<u><em>36+16=48</em></u>
<u><em>48+16=64</em></u>
<u><em>16-12=4</em></u>
<u><em>12+12=36+8=44</em></u>

<em>Therefore lions heart beats 44 times every 60 seconds.</em>

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
6 0
3 years ago
I really need help with this ?
quester [9]

Answer:

Answer=44

Step-by-step explanation:

Rectangle: 6x4=24.

Triangle: 4x4=16, and 16/2=8.

Semicircle: Pi x radius squared, so pi x 2 squared is 16.something, and since it's a semicircle, we divide by 2, so it's 8 again.

Overall: 24+8+8=44 cm squared.

3 0
3 years ago
Solve.<br><br>10.8 - (-6.4) ×3​
Artist 52 [7]

Answer:

51.6

Step-by-step explanation:

10.8 - -6.4 is 17.2

17.2 x 3 is 51.6

4 0
3 years ago
Read 2 more answers
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