Solve 2(x + 3) = x-4

Mathematics

1 answer:

rusak2 [61]3 years ago

3 0

Answer:

x = -10

Step-by-step explanation:

$2(x + 3) = x - 4 \\ 2x + 6 = x - 4 \\ 2x - x = - 4 - 6 \\ x = - 10$

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Jamal bought a diamond ring at a 20% discount. He paid $2640 for the ring. Naomi bought a similar ring but was given a discount

Fudgin [204]

Answer: 72%

Step-by-step explanation:

Set Jamal's original ring price = x

$x - x(0.2) = 2640\\x(1-0.2)=2640\\x(0.8)=2640\\x=\frac{2640}{0.8}=3300$

Jamal's original ring price = $3300

Set Naomi's discount = y

$3300-3300(y)=924\\=3300(1-y)=924\\1-y=\frac{924}{3300} \\-y=\frac{924}{3300} -1\\y=1-\frac{924}{3300}=1-0.28=0.72$

Naomi's discount is 0.72 = 72%

7 0

3 years ago

How do you do this?

ELEN [110]

Use the Pythagorean Theorem: a² + b² = c².

a and b are the legs of the right triangle, and c is the hypotenuse.

2) 5² + b² = 6²
25 + b² = 36
b² = 11
b = 3.3 cm

3) 7² + b² = 8²
49 + b² = 64
b² = 15
b = 3.9 cm

4) a² + 5² = 13²
a² + 25 = 169
a² = 144
a = 12 cm

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3 years ago

When you shift a function, you are _______ it

MrMuchimi

I'd say you are stretching it because your changing the shape. im not very sure

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3 years ago

Read 2 more answers

Now, it’s twice as long since noon as it was two hours ago. What time is it now?

erik [133]

So noon is around 1to 12 so i think its 3:00 is that right

Plz give brainliest

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