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3 years ago

Solve for y. show work. 4(y+3)−2y+7

Mathematics

2 answers:

Inga [223]3 years ago

6 0

Answer: 2y + 19

Explanation: (4 • (y + 3) - 2y) + 7
4y + 19 -2y
2y + 19
Hope this helps :)

olga_2 [115]3 years ago

5 0

Dude I don’t feel like working

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A stocks value decreased the same amount each day for 4 days. If the total change in value was -2.5 what was the change each day

KIM [24]

Answer:

-0.625

Step-by-step explanation:

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3 years ago

What is the surface area of the prism?

aliina [53]

SA= ( BH + 2LS +LB)

B= 16
H=6
L=8
S=10

SA= ( 16*6 +2(8*10) +8*16)=
SA= (96+2(80)+128)=
SA= (96+160+128)=
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3 years ago

PLEASE HELP WITH THIS QUESTION.

meriva

$40/$7 = 5.71428571

The Answer is 5

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3 years ago

Read 2 more answers

Problem 1: We have a set of numbers that is 4, 8, 2, 1, 1, 4, 3, 1. Find the mean, median, and mode.

Romashka-Z-Leto [24]

Answer:

Mean x¯¯¯ 3

Median x˜ 2.5

Mode 1

Step-by-step explanation:

6 0

3 years ago

Which two numbers add up to -24 and multiple to -24

Aleks [24]

X + y = -24
xy = -24

$xy = -24$
$\frac{xy}{x} = \frac{-24}{x}$
$y = \frac{-24}{x}$

$x + y = -24$
$x + \frac{-24}{x} = -24$
$\frac{x^{2}}{x} + \frac{-24}{x} = -24$
$\frac{x^{2} - 24}{x} = -24$
$-24x = x^{2} - 24$
$0 = x^{2} + 24x - 24$
$x = \frac{-(24) \± \sqrt{(24)^{2} - 4(1)(-24)}}{2(1)}$
$x = \frac{-24 \± \sqrt{576 + 96}}{2}$
$x = \frac{-24 \± \sqrt{672}}{2}$
$x = \frac{-24 \± 4\sqrt{42}}{2}$
$x = -12 \± 2\sqrt{42}$
$x = -12 \± 2(6.5)$
$x = -12 \± 13$
$x = -12 + 13$ $or$ $x = -12 - 13$
$x = 1$ $or$ $x = -25$

  x + y = -24    or      x + y = -24
  1 + y = -24 or -25 + y = -24
- 1   - 1 + 25 + 25
y = -25     or    y = 1
  (x, y) = (1, -25) or (x, y) = (-25, 1)

The two numbers that add up to 24 are the numbers 1 and -25.

x + y = -24
xy = -24

$xy = -24$
$\frac{xy}{x} = \frac{-24}{x}$
$y = \frac{-24}{x}$

$x + y = -24$
$x + \frac{-24}{x} = -24$
$\frac{x^{2}}{x} + \frac{-24}{x} = -24$
$\frac{x^{2} - 24}{x} = -24$
$-24x = x^{2} - 24$
$0 = x^{2} + 24x - 24$
$x = \frac{-(24) \± \sqrt{(24)^{2} - 4(1)(-24)}}{2(1)}$
$x = \frac{-24 \± \sqrt{576 + 96}}{2}$
$x = \frac{-24 \± \sqrt{672}}{2}$
$x = \frac{-24 \± 4\sqrt{42}}{2}$
$x = -12 \± 2\sqrt{42}$
$x = -12 \± 2(6)$
$x = -12 \± 12$
$x = -12 + 12$ $or$ $x = -12 - 12$
$x = 0$ $or$ $x = -24$

  x + y = -24    or      x + y = -24
  0 + y = -24 or -24 + y = -24
- 0 - 0 + 24 + 24
y = 24    or    y = 0

The two numbers that multiply to -24 are the numbers 24 and 0.

7 0

3 years ago