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weeeeeb [17]
3 years ago
7

Multiply 7/8 and 9/10

Mathematics
2 answers:
Ratling [72]3 years ago
4 0
7 times 8 is 56
 9 times 10 is 90
MissTica3 years ago
4 0
The answer would be 63/80.

Explanation:
To multiply fractions, all you do is you multiply the numerator and the denominator. In this case, 7 and 9 are the numerators, so 7 x 9 = 63. 8 and 10 are the denominators, so 8 x 10 = 80. Therefore, the answer is 63/80.
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What is the equation of the line that passes through the point (-3, 2) and has a<br> slope of -2/3
Mazyrski [523]

Answer:

y=-2/3x

Step-by-step explanation:

if you use the graphing calculator, the y intercept of the equation is 0 therefore y=mx

m=-2/3

the slope intercept equation is y=-2/3x

5 0
3 years ago
The point (-7, -24) is on the terminal ray of angle θ which is in standard position. A student found the six trigonometric value
12345 [234]

Answer:

the first one

Step-by-step explanation:

4 0
3 years ago
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Find the circumference of a circle whose radius is 4 feet. Use 3.14 for Pi.
slavikrds [6]

Answer:

25.12

Step-by-step explanation:

The formula of the circumference of a circle is: C = 2(pi)(r)

Plug in 3.14 for pi and 4 for the radius.

C = 2(3.14)(4)

Multiply.

C = 25.12

5 0
3 years ago
Evaluate x + sq root(yz) when x = 3, y = 2, and z = –8.
Alex_Xolod [135]
Just remember  \sqrt{-1} = i

Sub in the numbers:
3 + \sqrt{-16} = 3+  \sqrt{16}\sqrt{-1} = 3 + 4i
7 0
3 years ago
The hypotenuse of a right triangle is 16 ft longer than the length of the shorter leg. If the area of this triangle is exactly 1
yarga [219]

Answer:

  A.  26 ft

Step-by-step explanation:

You might recognize that this triangle is a 5-12-13 triangle scaled up by a factor of 2. If so, you know immediately, that the hypotenuse is 2×13 = 26 feet in length.

__

If you're not so lucky, you can write equations involving the lengths of the legs of the triangle. Let those be x and y, with x being the shorter leg. Then the Pythagorean relation tells you ...

  x² + y² = (x+16)²

and the area relation tells you ...

  120 = (1/2)xy

Using the second equation to write an expression for y, we have ...

  y = 240/x

Substituting this into the first equation gives ...

  x² + (240/x)² = (x+16)²

  (240/x)² = 32x +256 . . . . subtract x²

  1800 = x²(x +8) . . . . . . . . .multiply by x²/32

This is a cubic with one real root. It can be solved several ways. I like "graphing" as it is quick and easy. Trial and error also works. The factors of 1800 include 10²·18, so it is clear that x=10 is the solution.

The hypotenuse length is x+16, so is 26 feet.

___

The attachment shows the graphical solution of the original two equations. This tells you the legs of the triangle are 10 and 24, so the hypotenuse will be 10+16 = 26. The 10-24-26 triangle is recognizable as a scaled version of the 5-12-13 triangle often used in math problems.

4 0
3 years ago
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