Answer:
n=42
Step-by-step explanation:
The first step is to open the brackets by multiplying the vale before the brackets to the values inside the brackets giving attention to the signs which gives:
3n-15-2n-16=11
Then we collect like terms together.
3n-2n-15-16=11
evaluating the above equation we get
n-31=11
n=11+31
=42
Answer:
can we are friend in brainly please give me your intro
The area of 1 tile is 3 1/8 (3.125) x 2 3/4 (2.75) = 8.59375
8.59375 x 9 = 77.34375 inches squared.
Hope this helps! :-) :-P
Answer:
Step-by-step explanation:
volume of the sphere=4/3 π (4)³=256 /3 π=256/3 ×3.14≈267.95 m³
Answer:
16 feet
Step-by-step explanation:
As said in the problem statement, the angles between the top of the house, the mirror, and the ground and between Sarah's eyes, the mirror, and the ground are congruent.
We also know that Sarah and the house are perpendicular to the ground.
So if we draw a triangle from the top of the house, to the mirror, to the bottom of the house, and another triangle from Sarah's eyes, to the mirror, to Sarah's feet, we get two triangles that have the same angles. Therefore, the triangles are similar, and we can write a proportion:
4 / 5 = h / 20
h = 16
The house is 16 feet tall.
