The Answer Is 18
Order Of Operation laws says that you must do the parentheses first, 45x2.
45x2=90
The next thing you must do is divide 90 by 10 since division is before addition.
90/10=9
Now combine like terms.
9+9=18
I believe that on the shape is length times the width which is 56
Answer:
32
Step-by-step explanation:
4(5+3)=
20+12=
32
or
4(5+3)=
4(8)=
32
Answer:
Call the sister's height x. The boy is twice as tall, so that's 2x. The father is 30 cm taller than the boy, so his height is 2x + 30. The combined height is 3.8m, which is 380cm. Now you can write an equation
x + 2x + 2x + 30 = 380
collect like terms
5x = 350
x = 70
the sister is 70cm tall, the boy is 2*70 = 140 cm, and the father is 140 + 30 = 170cm
Check that the heights add up to 3.8m: 70 + 140 + 170 = 380 cm = 3.8m. Correct
Step-by-step explanation:
hope it helps
Answer:
10. Not enough information
11. B ≈ 12.0°
12. A ≈ 34.1°
Step-by-step explanation:
10. Not enough information
11.
We need to use the Law of Sines, which states that for a triangle with lengths a, b, and c and angles A, B, and C:
![\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7BsinA%7D%20%3D%5Cfrac%7Bb%7D%7BsinB%7D%20%3D%5Cfrac%7Bc%7D%7BsinC%7D)
Here, we can say that AB = c = 38, C = 128, and AC = b = 10. Plug these in to find B:
![\frac{b}{sinB} =\frac{c}{sinC}](https://tex.z-dn.net/?f=%5Cfrac%7Bb%7D%7BsinB%7D%20%3D%5Cfrac%7Bc%7D%7BsinC%7D)
![\frac{10}{sinB} =\frac{38}{sin128}](https://tex.z-dn.net/?f=%5Cfrac%7B10%7D%7BsinB%7D%20%3D%5Cfrac%7B38%7D%7Bsin128%7D)
Solve for B:
B ≈ 12.0°
12.
Use the Law of Sines as above.
![\frac{a}{sinA} =\frac{b}{sinB}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7BsinA%7D%20%3D%5Cfrac%7Bb%7D%7BsinB%7D)
![\frac{23}{sinA} =\frac{28}{sin(43)}](https://tex.z-dn.net/?f=%5Cfrac%7B23%7D%7BsinA%7D%20%3D%5Cfrac%7B28%7D%7Bsin%2843%29%7D)
Solve for A:
A ≈ 34.1°