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Ede4ka [16]
3 years ago
5

13. The sum of 4 and three times a number is 19.

Mathematics
2 answers:
lesya692 [45]3 years ago
7 0

Answer:3x + 4 = 19

Step-by-step explanation:

Feliz [49]3 years ago
3 0

Answer:

3x+4=19

Step-by-step explanation:

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Solve c= 8a-3b for a
Vesnalui [34]

Answer:

(c+3b)/8 = a

Step-by-step explanation:

c= 8a-3b

Add 3b to each side

c+3b= 8a-3b+3b

c+3b = 8a

Divide each side by 8

(c+3b)/8 = 8a/8

(c+3b)/8 = a

6 0
3 years ago
What is the factorization of 729^15+1000​
Nesterboy [21]

\bf \textit{difference and sum of cubes} \\\\ a^3+b^3 = (a+b)(a^2-ab+b^2) \\\\ a^3-b^3 = (a-b)(a^2+ab+b^2) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} 729=27^2\\ \qquad (3^3)^2\\ 1000=10^3 \end{cases}\implies 729^{15}+1000\implies ((3^3)^2)^{15}+10^3 \\\\\\ ((3^2)^{15})^3+10^3\implies (3^{30})^3+10^3\implies (3^{30}+10)~~[(3^{30})^2-(3^{30})(10)+10^2] \\\\\\ (3^{30})^3+10^3\implies (3^{30}+10)~~~~[(3^{60})-(3^{30})(10)+10^2]

now, we could expand them, but there's no need, since it's just factoring.

3 0
3 years ago
How do you add and subtract decimals as easily as you do whole numbers?
Gwar [14]
You can also multiply the decimals by a multiple of 10 to turn them I to whole numbers. Just make sure you multiply them both by the same multiple of 10 and divide them back before you write your answer!
8 0
3 years ago
Its #4 help please <br> question 4
sasho [114]

Answer:

I think s(2s) = 205

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Whats the value of X?
Nataly_w [17]
The value of is 10 I think
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3 years ago
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