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2 years ago

IMAGE IS DOWN BELOW!! SOMEONE PLEASE HELP ME!! ILL GIVE YOU BRAINLIST ANSWER AND POINTS!!

Mathematics

2 answers:

Svetach [21]2 years ago

6 0

9^2+11^2=x^2
81+121=x^2
x^2=202
x=14.2

kumpel [21]2 years ago

4 0

Answer:

$a^{2}$ + $b^{2}$ = $c^{2}$

a and b are legs, c is the hypotenuse

$9^{2}$ + $11^{2}$ = $c^{2}$

81 + 121 = $c^{2}$

202 = $c^{2}$ ( square root each side $\sqrt{202}$

14.2126704036 = c

c = 14.2

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Ksenya-84 [330]

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3 years ago

Darla needs to purchase nine more stamps than envelops. Each stamp cost $0.10, and each envelope costs $0.13 . If she pays $2.51

sp2606 [1]

This is a systems of equations.

s = stamp, e = envelope

$\left \{ {{e + 9 = s} \atop {.1s+.13e=2.51}} \right.$

Substitute e + 9 for s.

.1(e + 9) + .13e = 2.51

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.1e + .9 + .13e = 2.51

Simplify.

.14e + .9 = 2.51

Subtract .9 from both sides.

.14e = 1.61

Divide both sides by .14.

e = 11.5

Now, you can input e into the other equation.

11.5 + 9 = s

Simplify.

20.5 = s

s = 20.5, e = 11.5

5 0

4 years ago

What is the ultimate goal when solving equations? What do you want your final answer to look like?

STALIN [3.7K]

Answer:

$\huge\boxed{\text{To get x on one side of the equation:} \ \ x = ...}$

Step-by-step explanation:

When we solve for an equation, our goal is to find the value of the variable. Any variable can be used, but for the time being let’s assume we use $x$ .

We can algebraeically solve equations until we get the value of x - in which we will have x equal to something.

Say we have the equation $5x+5=20$ . Our goal is to find the value of $x$ . <u>We can do this by getting x isolated on one side so we have something equal to x</u>.