All categories

2 years ago

EASY POINTS!! INCLUDE A DISC

Mathematics

1 answer:

s344n2d4d5 [400]2 years ago

8 0

Answer:

I don't know what you mean by disc but the answer is 80 degrees.

Step by Step explanation:

A triangle is made up of 180 deg

65+35=100

180-100=80

You might be interested in

What is the number 0.000706 written in scientific notation?

Alex17521 [72]

Answer:

7.6 x 10^-4

Step-by-step explanation:

5 0

2 years ago

Noah says 4/9 is equivalent to 20/45. Check his work by completing the table of equivalent ratios.

g100num [7]

Noah is correct!!!! 20/45 simplified is 4/9. hope this helps!

7 0

2 years ago

Read 2 more answers

HELPPP I NEED TO DO THIS BEFORE 7:00

Oksana_A [137]

Answer:

A, (13/3 x 5/13)

Step-by-step explanation:

So first, you should change the mixed numbers into improper fractions. To convert, just multiply the whole number by the denominator and add the numerator. Do that to both fractions and you should get 13/3 ÷ 13/5. Since you need to switch to multiplication, switch the sign and flip that fraction/ That asnwer is 13/3 x 5/13. Hope that helps! :)

3 0

2 years ago

Read 2 more answers

Write the length of each insect as a fraction or a mixed number and as a decimal

natta225 [31]

Answer:

14.90/100 and .90 15. 1 15/100 and 1.15

Step-by-step explanation:

each tick equals 10 centimeters so the first one is .90 and the second one is 1.15

3 0

2 years ago

Read 2 more answers

A thermometer is taken from an inside room to the outside, where the air temperature is 20° f. after 1 minute the thermometer re

fomenos

The change in the temperature is proportional to the difference in temperatures. Let's call the initial temperature of the room and the thermometer $E_0$ and the current temperature $E(t)$ where $t$ is the elapsed time in minutes. The outside temperature is 20 F.

Newton's Law of Cooling:

$E(t) - 20 = (E_0 - 20) e^{- k t}$

We're given $E(1)=70 \textrm{ and } E(5)=45$

$70-20 = (E_0 - 20) e^{-k}$

$45-20 =(E_0 - 20) e^{-5k}$

Dividing,

$\dfrac{50}{25}=e^{4k}$

$k = \dfrac 1 4 \ln 2$

Now,

$E(t) - 20 = (E_0 - 20) e^{- k t}$

$E_0 = 20 + (E(t) - 20)e^{k t}$

$E_0 = 20 + (E(1) - 20)e^{k}$

$E_0 = 20 + (70 - 20)e^{\ln 2/4}$

$E_0 = 20 + 50 \cdot 2^{1/4} \approx 79.46 \textrm{ degrees F}$

3 0

3 years ago