7a+b-4a-2b
=3a-b
Add the coefficients of the ones with the same letter.
Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
X = -7^3
Step-by-step explanation:
Hope this helped
Branliest?
Answer:
68 mph
Step-by-step explanation:
Mph=miles ÷ time
Mph=204 ÷ 3
Answer:
175 cm²
Step-by-step explanation:
Surface area of the square pyramid = area of the base + area of 4 triangles
So, in order to find the total surface area, first calculate the area of base then area of triangle
Area of the base can be calculated by s²
and s= 7cm
∴Area of the base = 7 x 7 = 49 cm²
As, Area of Δ = 1/2 b x h
Area of the 4 triangles = 4 x [ 1/2 x 7 x 9] (since there are 4 triangles)
Area of the 4 triangles = 4 x 31.5
Area of the 4 triangles = 126 cm²
Therefore, the surface area= Area of the base+ Area of the 4 triangles
Total Surface Area = 49 + 126 = 175 cm²
Answer:
17. 37
18. 10
Step-by-step explanation:
Use the formula a squared + b squared = c squared. (a^2 + b^2 = c^2)
For number 17 first square both your side lengths of 12 and 35 to get 144 and 1225.
Then add them together to get 1369. That is your c^2 but now you have to find the square root to get your side length of c. Once you find the square root of 1369 you should get an answer of 37 for your missing side.
Using the same formula of a^2 + b^2 = c^2 you square the two side you’re given and get 576 + b^2 = 676
Since it gives you your a and c side lengths all you do is subtract your a from your c (676 - 576) to get 100 which is your b^2. Then you find the square root of 100, which is 10 because 10 times itself is 100, you’ll have your b side length of 10
