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4 years ago

Leon has 16 fewer quarters than dimes. He has 34 quarters.

Mathematics

2 answers:

ELEN [110]4 years ago

7 0

Answer:

A grand total of 50 dimes

Step-by-step explanation:

Monica [59]4 years ago

7 0

Answer:

i think its 64. could be wrong lmk please

Step-by-step explanation:

please rate if its write tho

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Please help thanks!!

Papessa [141]

X=20,-16 but i don't sure

4 0

3 years ago

Which is equivalent to square root 8 to the third power

xz_007 [3.2K]

Answer:

Step-by-step explanation:

IMPORTANT: ∛8ˣ is not the square root of 8³. ∛ means cube root.

∛x = x^(⅓)

8 0

3 years ago

The following two vectors satisfy the same system of linear equations. u=⎡⎣⎢⎢6−5−5⎤⎦⎥⎥, v=⎡⎣⎢⎢746⎤⎦⎥⎥ Find x and y that make the

kondaur [170]

Answer:

x=-30/71, y=0

Step-by-step explanation:

if a vector satisfies an equation of the form ax+by+cz=0 then the vector is

parallel to the plane ax+by+cz=0, and, the cross product of two vectors results in an orthogonal vector to both.

So, <a,b,c> the normal vector of the plane ax+by+cz=0, can be found as the cross product of the two parallel vetors to the plane:

<a,b,c> = <6,-5,-5>×<7,4,6>= <-10,-71,59>

so, the homogeneous system is:

-10x-71y+59z=0

by replacing the vector <3,x,y> in the system

-30-71x+59y=0

So, there are 2 unknown variables and 1 equation, it means that 1 variable is free

so, y=0 is a random defition and x can be obtain with the equation

-30-71x=0 -> x=-30/71

3 0

3 years ago

A girl is on the beach and the angle of elevation from her feet to the top of a lighthouse is 62' If the lighthouse is 30ft tall

soldi70 [24.7K]

Answer:

15.95 feets

Step-by-step explanation:

Given that:

Angle of elevation = 62°

Using trigonometric relation :

Tanθ = opposite / Adjacent

From the drawing attached :

Opposite = 30 feets

Distance between girl and lighthouse = d

Tan 62 = 30 / d

1.8807264 * d = 30

d = 30 / 1.8807264

d = 15.951283

d = 15.95 feets

3 0

3 years ago

What is the solution to the system of equations? Y=2x-3.5 X-2y=-14

GuDViN [60]

( 7, 10.5 )

Solution:

y = 2x - 3.5
x - 2 y = -14

Plug the first equation into the second equation like so;
x - 2 ( 2x - 3.5 ) = -14
Distribute -2 to 2x and -3.5

Your equation should now look like this:

x - 4x + 7 = -14
You want common numbers to be in the same side so you subtract 7 from both sides

x - 4x + 7 - 7 = -7 - 14

Now simplify both sides

x - 4x = -3x
- 7 - 14 = -21

In order to solve for x you need to get x by itself, so you divide both sides by -3

-3x / -3 = x
-21 / -3 = 7
x = 7

In order to solve for y you need to plug x in
(You can plug it into either equation, but I'm plugging it into the first one)

y = 2 (7) - 3.5
y = 14 - 3.5
y = 10.5

8 0

3 years ago