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leonid [27]
3 years ago
5

Hi I am not good at math so I need help please

Mathematics
1 answer:
andre [41]3 years ago
4 0

Answer:

1) 3:2

2) 2:1 cm

3) 1:4 meters

4) 3:2

5) 2:1:3

Step-by-step explanation:

1) 18:12 reduce --> 3:2

2) 30 - 20 = 10 ---> so 20:10= 2:1

3) 6x4= 24 so --> 6:26 reduce 1:4

4) 25-15= 10 so 15 red to 10 blue reduce ---> 3:2

5) 20 yellow 10 blue 30 red reduce---> 2:1:3

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Which expressions are equivalent to 3(6+b)-(2b + 1)?
Anna [14]

Answer:

18+3b-2b-1

b+17

Step-by-step explanation:

\mathrm{Using\:the\:distributive\:law}:\quad \:-\left(a+b\right)=-a-b

-\left(2b+1\right)=-2b-1

=3\left(6+b\right)-2b-1

=18+3b-2b-1

\mathrm{Group\:like\:terms}

=3b-2b+18-1

\mathrm{Subtract\:the\:numbers:}\:18-1=17

=3b-2b+17

\mathrm{Add\:similar\:terms:}\:3b-2b=b

=b+17

[RevyBreeze]

7 0
2 years ago
Cotθ= tan30° find theta
scoundrel [369]

Answer:

60

Step-by-step explanation:

Cot is the same as 1/tan so:

1/tan(theta) = tan(30)

By rearranging the equation, we get:

1/tan(30) = tan(theta)

By taking the inverse tan, we get:

theta = tan^-1 (1/tan(30)) =60

7 0
2 years ago
What is 6 times less than 42​
Oksana_A [137]

Hello!

Your answer would be 6

Than basically means switching the numbers

So basically if you were to multiply 6 x 6 (6 times less than)

You would get 36. Then subtract.

42 - 36 = 6, which is your answer.

I hope this helps!

Im one Brainliest away from next rank, so if possible please consider!

8 0
2 years ago
A square is inscribed in an isosceles right triangle with the length of the leg equal to 2 in. as shown on the figure. Find the
exis [7]

Answer:

4

Step-by-step explanation:

Since the triangle is isosceles, the side of the square is half the length of the side of the triangle, so is 1. The four sides of the square have a total length of 4.

6 0
3 years ago
Need help fast thanks and god bless
Nuetrik [128]

Answer:

275.

Step-by-step explanation:

The gradient of the graph is 70/2 = 35 and it passes through the origin so we can write its equation as

y = 35x.

The gradient of the function represented by the the table is

(240-180) / (4-3) = 60

Ehen x = 3 y = 180 so when  x = 0 y = 180 - 60 - 60 - 60 = 0 and the equation of this function is

y = 60x.

For the first equation when x = 11, y = 35*11 = 385.

For the second it is 60 * 11 = 660

So our answer is  660 - 385

= 275

7 0
2 years ago
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