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4 years ago

GIVING BRAIN AND 30pointsWhat is the solution to the system of equations below?

Mathematics

2 answers:

SpyIntel [72]4 years ago

5 0

Answer:

No solution

Step-by-step explanation:

Using substitution, we get to the answer 12=0, which is untrue meaning no solution.

Hope this helps! Please give Brainliest!!

salantis [7]4 years ago

3 0

Answer:

no solution

Step-by-step explanation:

y= -1/4x+2

3y = - 3/4x-6 ⇒ y= - 1/4x - 2

These are parallel lines as have same slope of -1/4, so there is no solution

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The following picture is a square pyramid where DE=8 cm and m∠ADE=60°.

Goryan [66]

Given:

The length of DE is 8 cm and the measure of ∠ADE is 60°.

We need to determine the surface area of the pyramid.

Length of AD:

The length of AD is given by

$cos 60^{\circ}=\frac{FD}{8}$

$4=FD$

Length of AD = 8 cm

Slant height:

The slant height EF can be determined using the trigonometric ratio.

Thus, we have;

$sin \ 60^{\circ}=\frac{EF}{8}$

$sin \ 60^{\circ} \times 8=EF$

$\frac{\sqrt{3}}{2} \times 8=EF$

$4\sqrt{3}=EF$

Thus, the slant height EF is 4√3

Surface area of the square pyramid:

The surface area of the square pyramid can be determined using the formula,

$SA=Area \ of \ square + \frac{1}{2} (Perimeter \ of \ base ) (slant \ height)$

Substituting the values, we have;

$SA=8^2+\frac{1}{2}(8+8+8+8)(4 \sqrt{3})$

$SA=64+\frac{1}{2}(32)(4 \sqrt{3})$

$SA=64+(16)(4 \sqrt{3})$

$SA=64+64 \sqrt{3}$

The exact form of the area of the square pyramid is $64+64 \sqrt{3}$

Substituting √3 = 1.732 in the above expression, we have;

$SA = 64 + 110.848$

$SA = 174.848$

Rounding off to one decimal place, we get;

$SA = 174.8$

Thus, the area of the square pyramid is 174.8 cm²

7 0

3 years ago

Read 2 more answers

Select an operation to make the equation true.

MrRa [10]

Add. I’m not sure because there is a - besides the 15.

Explanation - 12 + 15 = 27.

Hopefully this helps. Have a blessed one. God loves you. ☺️

3 0

3 years ago

Geometry: Solve for X

nevsk [136]

6) x= 2, angle = 90 degrees obviously
7) Im not sure on this one
8) x = 5
9) x = 1

3 0

3 years ago

Read 2 more answers

Can somebody please help me with #11 thank you

aniked [119]

The graph is not a function, as it does not pass the vertical line test. The lines at 2,-1 and 2,3 overlay and pass the vertical line more than once, meaning that the graph is not a function.

6 0

3 years ago

What multiples for 90 and adds up to -23 ?

melamori03 [73]

Easy buddy...

_________________________________

Step (1)

I choose a number which is x

_________________________________

Step (2)

Multiplies by 90 :

$90x$

_________________________________

Step (3)

Adds up to -23 :

$90x - 23$

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

7 0

3 years ago