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3 years ago

Negative one and three fifths divided by negative two thirds

Mathematics

1 answer:

nadya68 [22]3 years ago

5 0

Answer:

12 over 5, or 2.4

Step-by-step explanation:

I plugged it in my graphic calculator.

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Six identical circles fit inside the rectangle as shown below. If the rectangle has a width of 15

irakobra [83]

Answer:

The radius of each circle is 2.5 units

Step-by-step explanation:

7 0

3 years ago

Find sin(a+B)

diamong [38]

Answer:

Cos A=5/13

we have

Cos² A= $1-Sin ²A$

25/169=1-Sin²A

sin²A=1-25/169

sin²A=144/169

Sin A= $\sqrt{144/169}=12/13$

again

Tan B=4/3

P/b=4/3

p=4

b=3

h= $\sqrt{3²+4²}=5$

Now

Sin B=p/h=4/5

in IV quadrant sin angle is negative so

Sin B=-4/5

CosB=b/h=3/5

Now

Sin(A+B):sinAcosB+CosAsinB

now 

substitute value

Sin(A+B):12/13*3/5+5/13*(-4/5)=36/65-4/13

=16/65 is a required answer

6 0

2 years ago

Help me please I am confused with the question about the 3 digit number ?

vazorg [7]

Answer:

900

Step-by-step explanation:

3-digit natural numbers are whole numbers that range from 100 to 999 (3-digit because there are three numbers)

- 999 whole numbers from 1 to 999 (counting from 1, 2, 3, 4...897, 898, 899)

- 1 to 99 are 2-digit numbers, so you do not count them

999 - 99 = 900

there are 900 3-digit natural numbers!

comment or message me if you are still confused!

3 0

2 years ago

Kurt spots a bird sitting at the top of a 40 foot tall telephone pole. If the angle of elevation from the ground where he is sta

Natalija [7]

Answer:

i guess its 24.03 ft

Step-by-step explanation:

let height of pole be perpendicular length and distance from pole be the base .so tan59=P/b..& b= 24.03ft

3 0

2 years ago

Brianna had 20$ but spent d dollars on ice cream. Write an expression to represent how much Brianna has after buying ice cream

Georgia [21]

Answer:

20-d=y

Step-by-step explanation:

3 0

2 years ago