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Agata [3.3K]
2 years ago
11

Help please -19 + 2z = -21

Mathematics
1 answer:
777dan777 [17]2 years ago
6 0

Answer:

z = -1

Step-by-step explanation:

You must first start out by adding 19 to both sides to isolate the variable z, which results in:

2z = -2

Now, you can just divide by two on both sides to get z completely on its own, which gives you:

z = -1

Hope this helped somewhat! :D

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0.13 0.13 3.1.3

Step-by-step explanation:

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3 years ago
Classify the following triangle. Check all that apply.
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Answer:

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Find the length of the altitude to the hypotenuse. Round the answer to the nearest tenth, if needed.
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3 years ago
Ella has 0.5 lbs of sugar. How much water should she add to make the following concentrations? Tell Ella how much syrup she will
HACTEHA [7]

Ella has to add 32.833 lbs of water to get 33.333 lbs of syrup.

<u>Solution:</u>

Ella has 0.5 lbs of sugar. Let x lbs be the amount of water Ella should add to get the 1.5% of syrup,

\Rightarrow0.5\text{ lbs }- 1.5\%

\Rightarrow x+0.5\text{ lbs }- 100\%

On writing the proportion,

\Rightarrow\dfrac{0.5}{x+0.5}=\dfrac{1.5}{100}\\ \\\Rightarrow0.5\cdot 100=(x+0.5)\cdot 1.5\\ \\\Rightarrow50=1.5x+0.75\\ \\\Rightarrow1.5x=50-0.75\\ \\\Rightarrow1.5x=49.25\\ \\\Rightarrow x=\dfrac{49.25}{1.5}\approx 32.833\ lbs

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7 0
3 years ago
6. What is the value of n? 3/8n - 1/3 = 5/6
Brrunno [24]

Answer:

n= 3 1/9

Step-by-step explanation:

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3/8n = 7/6

n = 7/6  ÷ 8/3

n=28/9

n= 3 1/9

8 0
3 years ago
Read 2 more answers
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