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Anon25 [30]
3 years ago
11

can someone help me with 18-20 plz!!!

Mathematics
2 answers:
ehidna [41]3 years ago
3 0

Answer:

18 minus 20 is -2

borishaifa [10]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

8-10

impossible

therefore u take 10-8

=2

because we borrowed two from ten=-2

=-2

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I NEED SOMEONE TO SOLVE THESE FOR ME. I NEED THE WHOLE PROBLEM SOLVED NOT JUST THE ANSWER.
dimaraw [331]

Answer:

1. x=11/4

Step-by-step explanation:

\frac{3}{5} x -  \frac{3}{4}  =  \frac{9}{10}

u should x 20 then u will get

12x - 15 = 18

12x = 18 + 15

12x = 33

x =  \frac{33}{12}

x =  \frac{11}{4}

8 0
3 years ago
Read 2 more answers
In a pair of complementary angles, the measure of the larger angle is twice that of the smaller
EleoNora [17]

Answer: 60 degrees

Step-by-step explanation:

6 0
2 years ago
In each of Problems 5 through 10, verify that each given function is a solution of the differential equation.
WARRIOR [948]

Answer:

For First Solution: y_1(t)=e^t

y_1(t)=e^t is the solution of equation y''-y=0.

For 2nd Solution:y_2(t)=cosht

y_2(t)=cosht  is the solution of equation y''-y=0.

Step-by-step explanation:

For First Solution: y_1(t)=e^t

In order to prove whether it is a solution or not we have to put it into the equation and check. For this we have to take derivatives.

y_1(t)=e^t

First order derivative:

y'_1(t)=e^t

2nd order Derivative:

y''_1(t)=e^t

Put Them in equation y''-y=0

e^t-e^t=0

0=0

Hence y_1(t)=e^t is the solution of equation y''-y=0.

For 2nd Solution:

y_2(t)=cosht

In order to prove whether it is a solution or not we have to put it into the equation and check. For this we have to take derivatives.

y_2(t)=cosht

First order derivative:

y'_2(t)=sinht

2nd order Derivative:

y''_2(t)=cosht

Put Them in equation y''-y=0

cosht-cosht=0

0=0

Hence y_2(t)=cosht  is the solution of equation y''-y=0.

3 0
3 years ago
Kurt bought a box of 96 crayons for $10.56. Which is the best estimate for each crayon? *
Scilla [17]

Answer:

C

Step-by-step explanation:

10.56/ 96= 0.11 which you can round down to 0.10

7 0
3 years ago
The vertical cross-section of a solid is shown below has 10 in every side angle
Vlad1618 [11]
I think I know what it forms - a cone!!

I'm guessing that the angles at the end are 10 degrees so that would make angle CAB equal 5 degrees.
Line AB would be the radius of the "upper cone".
Line BC is 12/2 or 6
tangent (A) = BC / AB
tangent (5) = 6 / AB
AB = 6 / tan(5)
AB = 6 / 0.087489
AB = <span> <span> <span> 68.58 which is the radius of the "upper cone".</span></span></span>
Cone Volume = (PI * radius^2 * height) / 3
Cone Volume = (PI * 68.58 * 68.58 * 6) / 3
Cone Volume = <span> <span> <span> 29,551
That is just the "upper cone volume.  So, we multiply </span></span></span><span><span> <span> <span> 29,551 * 2
and get 59,102 which is the volume of the entire solid.
</span></span></span> </span>
Source for cone volume:
http://www.1728.org/volcone.htm


3 0
3 years ago
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