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bagirrra123 [75]
3 years ago
10

Which expressions are equivalent to -3x+6v+7x14?

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Between the 4 and the 7 is it a multiplication or an X?

If the multiplication sign, this is the solution

- 3x + 6v + 7 \times 14 \\  =    6v  - 3x + 98

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The largest frog in the world is the goliath,found in west africa. It can grow to be 12 inches long. The smalest in the world is
denis23 [38]

Answer:

4.8 inches

Step-by-step explanation:

Given: The largest frog in the world is goliath which is 12 inches long.

           The smallest frog is about 2.5 as long as the goliath.

Lets assume the length of smallest frog be "x".

As given, smallest frog is about 2.5 as long as the goliath.

∴ we can form equation as 2.5x= 12\ inches

Solving the equation to find the value of x

2.5x= 12

Dividing both side by 2.5

⇒ x= \frac{12}{2.5}

∴ x= 4.8\ inches

Hence, the length of smallest frog is 4.8 inches.

3 0
3 years ago
As an estimation we are told 5 miles is 8 km. <br> Convert 37.5 miles to km.
Tcecarenko [31]

Answer:

60.3504

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Someone help me with this pls
sasho [114]
The answer would be 8 ^-5
7 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL GIVE A LOT OF POINTS!
vazorg [7]

9514 1404 393

Answer:

  (2.27, 0.96)

Step-by-step explanation:

The orthocenter is the point of intersection of altitudes of the triangle. The equation for an altitude is the equation of a line through a vertex that is perpendicular to the opposite side.

For example, the line perpendicular to side AC can be found as ...

  (∆x, ∆y) = C-A = (3, -1) -(-4, 2) = (7, -3)

  ∆x(x -h) +∆y(y -k) = 0 . . . . perpendicular through point (h, k)

For side AC, we want the point to be B(4, 5), so the equation is ...

  7(x -4) -3(y -5) = 0

  7x -3y -13 = 0

Similarly, the altitude to side AB can be written as ...

  (∆x, ∆y) = B -A = (4, 5) -(-4, 2) = (8, 3)

  8(x -3) +3(y +1) = 0

  8x +3y -21 = 0

__

By the "cross multiplication method", the solution to these equations is ...

  x = (-3(-21) -(3(-13))/(7(3) -8(-3)) = (63+39)/(21+24) = 102/45 = 2 4/15 ≈ 2.27

  y = (-13(8) -(-21)(7))/45 = 43/45 ≈ 0.96

The orthocenter is near (2.27, 0.96).

__

A graphing application confirms this result.

_____

<em>Additional information about the cross multiplication method</em>

For the general form equations ...

  • ax +by +c = 0
  • dx +ey +g = 0

The "cross multiplication method" has you write the array ...

  \begin{array}{cccc}a&b&c&a\\d&e&g&d\end{array}

and form the "cross products" in groups of four coefficients:

  D = ae -db, X = bg -ec, Y = cd -ga

Then the solution to the set of equations is ...

  1/D = x/X = y/Y   ⇒   x = X/D, y = Y/D

__

<em>Additional note</em>

Videos of this method show you writing the array as bcab/egde and using the final equation x/X=y/Y=1/D. The above gets the same result in a more straightforward manner.

3 0
3 years ago
HELP I NEED HELP ASAP
lilavasa [31]

Answer:

The answer is C

Step-by-step explanation:

The mean of math is 84, and the Mean of science is 85.

so, science is clearly one point higher

7 0
3 years ago
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