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Tems11 [23]
3 years ago
11

How can knowing 4 times 7 help find the product of 8 times 7.

Mathematics
2 answers:
Nadya [2.5K]3 years ago
7 0
Because 4x2 = 8, so 4x7=28, then you times 28 by 2 which equals 56 and 8x7=56
marin [14]3 years ago
3 0
Do 7×7=49 and then do 7×8=56
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MA_775_DIABLO [31]

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2

Step-by-step explanation:

ONLY TWO NO OTHER

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Austria was once a colony of Belgium
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3 years ago
Find the value of g(7) for the function below.
Yanka [14]

Answer: The correct answer is (A) - 60/7 :)

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5 0
3 years ago
Can someone please help me with these math problems ASAP?!<br> Thanks in advance! ;)
Mamont248 [21]

Answer:

11) Here given Function,

f(x) = \sqrt{2x-11}

And, g(x) = -|0.1|x+5

For f(x) = g(x)

\sqrt{2x-11}=-|0.1|x+5

2x-11=(-|0.1|x+5)^2

2x-11=0.01x^2 - 10|0.1|x+25

2x=0.01x^2 - 10|0.1|x+25+11

2x=0.01x^2 - 10|0.1|x+36

0.01x^2 - 10|0.1|x - 2x+36=0

When we solve this equation,

We found,

 x = 12.5227 ≈ 12.53

Thus, the required solution is, x = 12.53

12) Here the height of rocket A in x second,

f(x) = -16x^2+74x+9

And, The height gain by the rocket B in x seconds,

g(x) = -16x^2+82x

If at x seconds both A and B gain the same height,

That is, f(x) = g(x)

⇒ -16x^2+74x+9= -16x^2+82x

⇒74x + 9 = 82x

⇒ 82x - 74x = 9

⇒ 8x = 9

⇒ x = 1.125 ≈ 1.13

Thus, the required solution is x = 1.13 seconds (approx)


4 0
2 years ago
Factor: x^2 + 11xy - 26y^2
irina1246 [14]
Hello.

(x + 2y) • (x - 13y) Step by step solution :<span>Step  1  :</span><span>Equation at the end of step  1  :</span><span> ((x2) - 11xy) - (2•13y2) </span><span>Step  2  :</span>Trying to factor a multi variable polynomial :

<span> 2.1 </span>   Factoring   <span> x2 - 11xy - 26y2</span> 

Try to factor this multi-variable trinomial using trial and error<span> 

 </span>Found a factorization  :  (x + 2y)•(x - 13y)

Final result : (x + 2y) • (x - 13y)
<span>
Have a nice day</span>
3 0
2 years ago
Read 2 more answers
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