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Anika [276]
3 years ago
5

Find two numbers a and b whose sum a+b is −1, and whose difference a−b is 1.

Mathematics
1 answer:
fiasKO [112]3 years ago
3 0
The a is 1 and the b is 0
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The power of ten representation of four thousandths
m_a_m_a [10]

Answer:

if its thousandths, its 4 x 10^-1. If you mean 4000, its 4 x 10^3

Step-by-step explanation:

5 0
3 years ago
автобус прошел 220 км за 27/7 часа.Сколько километров пройдет автобус за 54/7часа с той же скоростью?
egoroff_w [7]

Отвечать:

440 км

Пошаговое объяснение:

Учитывая, что :

Пройденное расстояние за 27/7 часов = 220 км

Расстояние, которое необходимо преодолеть за 54/7 часов, составит x

Следовательно, мы можем настроить перекрестное умножение:

27/7 = 220

54/7 = х

Крест умножить

27/7 х = 220 * 54/7

27x / 7 = 11880/7

3.8571428x = 1697.1428

х = 1697,1428 / 3,8571428

х = 439,99999

x = 440 км

Таким образом, за 54/7 часов будет преодолено расстояние 440 км.

4 0
3 years ago
Please help me am I. troubles​
Zanzabum

Answer:

\frac{ {x}^{2} }{y(x - y)}  +  \frac{ {y}^{2} }{ - x(x - y)}

\frac{ {x}^{2} }{y(x - y)}  -  \frac{ {y}^{2} }{x(x - y)}

\frac{ {x}^{2}  \times x  -  {y}^{2}  \times y}{xy(x -y)}

\frac{(x - y)( {x}^{2}  + xy +  {y}^{2}) }{xy(x - y)}

\frac{ {x}^{2} + xy +  {y}^{2}  }{xy}

7 0
3 years ago
A cylinder has a radius of 14 m and a height of 6 m.
ss7ja [257]
D. Use the formula V=πr^2 h.
4 0
3 years ago
Read 2 more answers
PLEASE HELP ME TIME SENSITIVE
julsineya [31]

Answer:

1- P(-0.47 < z < 0.47) = 0.63836

Step-by-step explanation:

Here, we want to get the answer to;

1-P ( -0.47 < z < 0.47)

Mathematically, we are going to use the standard normal distribution table for this

Let us try to evaluate;

P(-0.47 < z < 0.47)

Mathematically, that will be;

P (z < 0.47) - P(z < -0.47)

where P (z < -0.47) = P( z > 0.47)

so we have

P(-0.47 < z < 0.47) = P(z < 0.47) - P(z > 0.47)

So we have this using the standard normal distribution table as follows;

0.68082 - 0.31818 = 0.36164

Now, we can insert this in the earlier expression of;

1- P(-0.47 < z < 0.47)

= 1-0.36164 = 0.63836

Please give credit to Adetunmbiadekunle, who wrote this answer and do not mark me brainliest.

7 0
3 years ago
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