We don't know whether those two sides are both legs
of the right triangle, or if BC is the hypotenuse.
If AC and BC are both legs, then
AB = √ (AC² + BC²)
= √ (7² + 8²)
= √ (49 + 64) = √ 113 .
If BC is the hypotenuse of the right triangle, then
AB = √ (BC² - AC²)
= √ (8² - 7²)
= √ (64 - 49) = √ 15 .
Step-by-step explanation:
a)x + 4 + 2x +5
= x + 2x + 4 + 5
<h3>= <u>3x + 9</u></h3><h3 /><h3>b)10x - 3x + 7</h3><h3>=7x + 7</h3><h3 /><h3>c)5x + 6y + 2xy + 4x - 2y</h3><h3>=5x + 4x + 6y - 2y + 2xy</h3><h3>=9x + 4y + 2xy</h3><h3>c)7t + 2r - 3t + r</h3><h3>=7t - 3t + 2r + r</h3><h3>=4t + 3r</h3><h3 /><h3>d)14 + 11p - 12</h3><h3>=14 - 12 + 11p</h3><h3>=2 + 11p</h3><h3 /><h3>e)8q - 3t + 4q + 9</h3><h3>=8q + 4q + 3t + 9</h3><h3>=12q + 3t + 9</h3><h3 />
Answer:
.875
Step-by-step explanation:
7 divided by 8 is .875.
If you multiply the first equation by 2, you get the second equation. Consequently, these equations are said to be "depenent", so both describe the same line. Any of the infinite number of points on the line is a solution, so ...
... The system has infinitely many solutions.
Answer:
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Answer is there are 40 girls in a class of 64 pupils.
Step-by-step explanation:
24 boys = 3: (So 8) a Ratio of 5 = 5x8 = 40, so Answer is there are 40 girls in a class of 64 pupils.
U 2 can help me by marking as brainliest.........
