B. 30(3a+2b). This is because when distributing, you don't multiply anything unless there is an original multiplication sign. However, that is not the case in choices C and D. In answer choice A, 16 was not distributed to -4k.
total surface area Stot = 688 mm2
lateral surface area Slat = 324 mm2
top surface area Stop = 182 mm2
bottom surface area Sbot = 182 mm2
Answer:
c
Step-by-step explanation:
6x+42+3x
6x+3x +42
9x+ 42
Answer:
Diameter = 19.33
Step-by-step explanation:
Imaging a radius line from O to the endpoints of the 7. call this line R.
Label the part of the vertical line from O to the 90 degree intersection y.
Now you have a right triangle.
Using the Pythagorean theorem:
R² = 7² + y²
also
y = R - 3
substitute for y:
R² = 49 + (R-3)²
R² = 49 + R² - 6R + 9
simplify:
0 = 58 - 6R
6R = 58
R = 9.6667
Diameter = 2(9.6667) = 19.33
Let's solve your equation step-by-step.
<span><span><span>7y</span>−4</span>=<span>−11
</span></span>Step 1: Add 4 to both sides.
<span><span><span><span>7y</span>−4</span>+4</span>=<span><span>−11</span>+4
</span></span><span><span>7y</span>=<span>−7
</span></span>Step 2: Divide both sides by 7.
<span><span><span>7y/</span>7</span>=<span><span>−7/</span>7
</span></span><span>y=<span>−1
</span></span>Answer:
<span>y=<span>−<span>1</span></span></span>
