3 years ago

NEED HELP ASAP 30 POINTS

Mathematics

1 answer:

Maksim231197 [3]3 years ago

4 0

What does part a mean i dont understand

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Zach is 23 years old. zach's age is 3 years older than twice maya's age. let m represent maya's age. which equation can be used

Anna71 [15]

Z = 23
z = 2m + 3

23 = 2m + 3 <==

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DIA [1.3K]

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8x-5y=15 <br>6x+4y=43<br>solve the system by any method

Sedbober [7]

Answer:

$x=\frac{275}{62}$ , $y=\frac{127}{31}$

Step-by-step explanation:

<h3>I will use the elimination method.</h3>

We want to make the X's the same:

$24x-15y=45$

$24x+16y=172$

Because the signs of the X's are the same we subtract the 2 equations to make:

(I put the second one on top of the 1st)

$31y=127$

So:

$y=\frac{127}{31}$

Substitute y into either equation 1 or 2:

(I chose equation 1)

$8x-5(\frac{127}{31})=15$

$8x=5(\frac{127}{31}) + 15$

$x=\frac{5(\frac{127}{31})}{8}$

So:

$x=\frac{275}{62}$

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3 years ago

A rectangle has a height of 5 and a width of 4x2– 2x - 6.

joja [24]

Answer:

area = 20x^2 - 10x - 30

Step-by-step explanation:

5(4x2 - 2x - 6)

area = 20x^2 - 10x - 30

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3 years ago

Which ones plsss help

lesya692 [45]

They are not the same shape or size. hope this helps!

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