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mezya [45]
3 years ago
12

Z+x3:use x = 1 and z = 19

Mathematics
1 answer:
pogonyaev3 years ago
7 0

Answer:21

Step-by-step explanation: plug in 19 and 1

1x3 is 3 plus 19 is 21

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8x + 2y = 30<br> 7x + 2y = 24<br> Solve the system of equations
Stels [109]

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Step-by-step explanation:

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3 years ago
a recipe calls for 1 and 3/4 cups of flour. How many cups will you need if you are preparing 3 batches of the recipe?
insens350 [35]

The first thing we need to distinguish is what 1 and 3/4 means.  So, 3/4 = .75, so 1 and 3/4 = 1.75


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5 0
4 years ago
Read 2 more answers
What does 8.4 10^5-7.7 10^4 equal?
Alex

Answer:

\huge\boxed{763,000=7.63\cdot10^5}

Step-by-step explanation:

\bold{METHOD\ 1:}\\\\8.4\cdot10^5-7.7\cdot10^4=8.4\cdot100,000-7.7\cdot10,000\\\\=840,000-77,000=763,000\\\\\bold{METHOD\ 2:}\\\\8.4\cdot10^5-7.7\cdot10^4=8.4\cdot10^{1+4}-7.7\cdot10^4\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=8.4\cdot10^1\cdot10^4-7.7\cdot10^4=84\cdot10^4-7.7\cdot10^4\\\\\text{use the distributive property}:\qquad a(b+c)=ab+ac\\\\=(84-7.7)\cdot10^4=76.3\cdot10^4=7\underbrace{.63}_{\leftarrow1}\cdot10^{4+1}=7.63\cdot10^5

5 0
3 years ago
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Llana [10]
First, notice that we are given the y-intercept, (0, 5), and the slope, m = 7.

We plug into slope-intercept form y=mx+b to get y=7x+5.
5 0
4 years ago
Read 2 more answers
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