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garik1379 [7]
4 years ago
10

-0.4a + 3 = 7 a=? please help

Mathematics
2 answers:
AleksandrR [38]4 years ago
7 0

Answer:

a = -10

Step-by-step explanation:

Sphinxa [80]4 years ago
7 0

Answer:

the answer is a = −10

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__________ reasoning is a type of reasoning that uses previously proven or accepted properties to reach conclusions.
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Deductive reasoning is your answer 
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What is the missing numbers<br><br> 9 tenths + 7 hundredths<br><br> 6 tenths + _ hundredths = 0.66
dolphi86 [110]
The first one is 0.97 the second one is 6
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After being treated with chemotherapy, the radius of the tumor decreased by 23%. What is the corresponding percentage decrease i
Crazy boy [7]

Answer:

The volume of the tumor experimented a decrease of 54.34 percent.

Step-by-step explanation:

Let suppose that tumor has an spherical geometry, whose volume (V) is calculated by:

V = \frac{4\pi}{3}\cdot R^{3}

Where R is the radius of the tumor.

The percentage decrease in the volume of the tumor (\%V) is expressed by:

\%V = \frac{\Delta V}{V_{o}} \times 100\,\%

Where:

\Delta V - Absolute decrease in the volume of the tumor.

V_{o} - Initial volume of the tumor.

The absolute decrease in the volume of the tumor is:

\Delta V = V_{o}-V_{f}

\Delta V = \frac{4\pi}{3}\cdot (R_{f}^{3}-R_{o}^{3})

The percentage decrease is finally simplified:

\%V = \left[1-\left(\frac{R_{f}}{R_{o}}\right)^{3} \right]\times 100\,\%

Given that R_{o} = R and R_{f} = 0.77\cdot R, the percentage decrease in the volume of tumor is:

\%V = \left[1-\left(\frac{0.77\cdot R}{R}\right)^{3} \right]\times 100\,\%

\%V = 54.34\,\%

The volume of the tumor experimented a decrease of 54.34 percent.

5 0
3 years ago
Provides data on sleep deprivation rates of Californians and Oregonians. The proportion of California residents who reported ins
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Answer:

Step-by-step explanation:

Download docx
8 0
3 years ago
Help me I’m on gradpoint. I will mark you brainlest if you can also find the website to get all gradpoint answers!
AlekseyPX

Answer:

C. (1, 1, 2)

Step-by-step explanation:

Well plugging them in one by one.

x + y - z = 0

-1 + 2 - 4 = 0

no.... no it doesn't equal 0 so it isn't the solution

-1 + 0 - 2 = 0

nope it doesn't equal 0 so it's also not the solution

1 + 1 - 2 = 0

Yes! this could equal the solution so lets keep going down the line

3x - y + z = 4

(3*1) -1 + 2 = 4

Yes! this also is correct

I could keep talking and talking but yes, (1, 1, 2) is your answer

Hope this helps! <3

3 0
3 years ago
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