3 years ago

Urgent ! i can't seem to solve this :(

Mathematics

1 answer:

Archy [21]3 years ago

3 0

Answer: 15 cm to the highest total ; amount of triangles: 25

Step-by-step explanation: for the height just add 3 cm until you reach the top, which will give you 15 cm

for the amount just count them and for the top top layer count up to 9, which will give you 25 triangles.

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A triangle has one angle measuring 3X degrees a second angle measures 2X +20°

Lena [83]

Answer : x = 20

Explanation :
3x + 2x +20 + 4x - 20 = 180

(3+2+4=9)

9x + 20 - 20
The 20s cancel each other out because one is positive and the other is negative

9x = 180

9x/9 = 180/9

X = 180 divided by 9

X = 20

7 0

3 years ago

SOMEONE PLEASE HELP!!

german

$-12=\dfrac{-12}{1}=\dfrac{12}{-1}=\dfrac{-24}{2}=\dfrac{24}{-2}=\dfrac{-36}{3}=\dfrac{36}{-3}=\dfrac{-48}{4}=\dfrac{48}{-4}=\dots$

7 0

3 years ago

D=DVDs and G=Games solve for 2D+3G=15.50 and 3D+1G=12.05

kogti [31]

We have

1G = 12.05 - 3D;

Then,

2D + 3( 12.05 - 3D) = 15.50;

2D + 36.15 - 9D = 15.50;

- 7D = - 20.65;

D = 2.95;

Finally, G = 12.05 - 3 x 2.95;

G = 3.20;

3 0

3 years ago

Helps, also explain how to do it I want to learn how and stop using brainy

Nutka1998 [239]

Answer:

259

Step-by-step explanation:

USE PEMDAS

Parenthesis

Exponent

Multiplication

Division

Addition

Subtraction

5 0

3 years ago

Please solve number 11:(

MrRa [10]

Answer:

Market price $400

Cost price $300

Step-by-step explanation:

MP: market price

CP: cost price

1. (MP x 0.9) - CP = 60

CP = 0.9MP - 60

2. MP - CP = 100

CP = MP - 100

0.9MP - 60 = MP - 100

MP - 0.9MP = 100 - 60

0.1MP = 40

MP = 400

Cost price = MP - 100 = 400 - 100 = 300

3 0

2 years ago

Urgent ! i can't seem to solve this :( ​

Urgent ! i can't seem to solve this :(