All categories

3 years ago

Marking Brainliest ! Answer quickly

Mathematics

2 answers:

Alex3 years ago

4 0

Answer:

5/7

Step-by-step explanation:

20/28=5/7

Hoped i answered u

harina [27]3 years ago

4 0

Answer:

$\frac{5}{7}$

Step-by-step explanation:

$\frac{20}{28}$ since they can be simplified in multiples of 4 makes the 20 become a 5 and the 28 become 7

making the outcome $\frac{5}{7}$ this cannot be simplified any more

You might be interested in

What is the area of a rectangle whose width is 6y units and whose length is 4y+2x-6 units?

ValentinkaMS [17]

Answer:

66473737

Step-by-step explanation:

747292929277273664646272727282891919919191919919192929298475756565665

6 0

2 years ago

Write in standard notation (1/sqrt2-1/sqrt2 i)^6

vesna_86 [32]

Hello,

z=(1/√2-1/√2 i)^6=1/8*(1-i)^6=1/8*(√2∡-45°)^6=1/8*8∡-270°=1∡90°=i
======================================================

7 0

3 years ago

Which of the following statements is not true?

Amiraneli [1.4K]

The above question is asking us to check if the exponents are written in the correct way or not.Let us look at the options one by one.

1) The exponent denotes the number of time the letter or number is multiplied.We have six x which are multiplied so the exponent for x which is 6 is right .The exponent is written correct .

2)We have seven A which are multiplied and five B multiplied making the exponent of A as 7 and B as 5 .The exponents are written correct.

3)There are six b and six c .The exponent rule has been followed here that is we can keep bc inside parenthesis and make 6 as the exponent.

4)Here exponent for x,y,z all are 5. we can not remove the exponent of x and y .It is not following the exponent rule .

Option 4 is not true.

4 0

3 years ago

Read 2 more answers

Using Newton's Law of Cooling. You are a medical examiner called to an abandoned house in which a dead body has been discovered.

Artyom0805 [142]

A) The differential equation comes from the fact that the rate of temperature change is proportional to the difference in temperatures.
$\frac{dT}{dt} = \alpha(T -52)$

B) Find general solution by separating variables and integrating $\int\frac{dT}{T-52} = \alpha \int dt \\ ln (T-52) = \alpha t + C \\ T = C e^{\alpha t} +52$ :

C) Initial condition is t=0, T = 87
$87 = C +52 \\ C = 35$

D) Total time elapsed is 10 minutes, new temperature is 84
$84 = 35 e^{10\alpha} +52$
solve for alpha
$e^{10\alpha} =\frac{32}{35} \\ \alpha = \frac{ln(32/35)}{10} \\ \alpha = -.00896$

E) Temperature function is:
$T = 35 e^{-.00896 t} +52$
solving for t
$t = \frac{ln (\frac{T-52}{35})}{-.00896}$
Plug in T = 98.6
$t = -31.95$

This is approximately 32 minutes before he arrived or about 1:20 AM

3 0

3 years ago

Leo the camel drinks ten times

Stels [109]

Answer:

3.3gal

Step-by-step explanation:

10 ×3=30

10 ×0.3=3

---

33gal

5 0

3 years ago

Read 2 more answers