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3 years ago

Please choose an answer and tell me why you chose that

Mathematics

1 answer:

solong [7]3 years ago

7 0

Answer:

Step-by-step explanation:

92+55+85+45+83=360

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Someone help I just got new assignments 23,24,25,26,27,28,29, and 30

SSSSS [86.1K]

Answer:

23: y = -0.4

24: b = -1.8

25: m = 1/2

26: g = 1/4

27: s = 3/2

28: w = -12/5

29: z = 5/4

30: a = -9/5

Step-by-step explanation:

23:

$3y + 5.2 = -5y + 2$
$3y+5.2+5y=-5y+2+5y$
$8y + 5.2 = 2$
$8y+5.2-5.2=2-5.2$
$8y = -3.2$
$\frac{8y}{8} = \frac{-3.2}{8}$
$y = -0.4$

24:

$10b-2=7b-7.4$
$10b-2-7b=7b-7.4-7b$
$3b - 2 = -7.4$
$3b -2 + 2 = -7.4 + 2$
$3b = -5.4$
$\frac{3b}{3} = \frac{-5.4}{3}$

$b = -1.8$

25:

$2m - 2 = 6m - 4$
$2m-2-6m=6m-4-6m$
$-4m-2=-4$
$-4m-2+2=-4+2$
$-4m = -2$
$\frac{-4m}{-4} = \frac{-2}{-4}$
$m = \frac{1}{2}$

26:

$3g+5=7g+4$
$3g+5-7g=7g+4-7g$
$-4g+5=4$
$-4g + 5 - 5 = 4-5$
$-4g = -1$
$\frac{-4g}{-4} = \frac{-1}{-4}$
$g = \frac{1}{4}$

27:

$4s-1=-2s+8$
$4s-1+2s=-2s+8+2s$
$6s - 1 = 8$
$6s - 1 + 1 = 8+1$
$6s = 9$
$\frac{6s}{6} = \frac{9}{6}$
$s = \frac{3}{2}$

28:

$9w+3=4w-9$
$9w+3-4w=4w-9-4w$
$5w + 3=-9$
$5w + 3 - 3 = -9-3$
$5w = -12$
$\frac{5w}{5} = \frac{-12}{5}$
$w = \frac{-12}{5}$

29:

$6z-7=2z-2$
$6z-7-2z=2z-2-2z$
$4z -7 = -2$
$4z-7+7=-2+7$
$4z = 5$
$\frac{4z}{4} = \frac{5}{4}$
$z = \frac{5}{4}$

30:

$-a+3=4a+12$
$-a+3-4a=4a+12-4a$
$-5a+3=12$
$-5a + 3 - 3 = 12-3$
$-5a = 9$
$\frac{-5a}{-5} = \frac{9}{-5}$
$a = -\frac{9}{5}$

6 0

3 years ago

Mr. Cooper wet to the market looking to purchase some fried chicken meals to bring home for

vaieri [72.5K]

Answer:

I don't believe there is enough information to answer the question.

Step-by-step explanation:

Either Mr. Cooper buys two 4 for 19$ specials for 38$ and has two left over, or he buys one special and then buys two individual fried chicken meals. The question does not tell us how much an individual chicken meal costs.

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3 years ago

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If f(x)=3x-15, then f^-1(x) = solve for x please

amid [387]

1. Replace f(x) with y: y = 3x - 15
2. Interchange x and y: x = 3y - 15
3. Solve this for y: 3y = x + 15, and y = (x + 15)/3
4. Replace y with

-1 -1
f (x): f (x) = (x + 15) / 3 (answer)

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3 years ago

Help ASAP please!!! First answer and correct answer gets the brain...

Snowcat [4.5K]

Final answer: 2x-5=6

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3 years ago

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When (8x − 4) = 2x is solved, the result is:

notsponge [240]

Answer:

x = 1

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

1/2(8x - 4) = 2x

Step 2: Solve for x

[Distributive Property] Distribute 1/2: 4x - 2 = 2x
[Subtraction Property of Equality] Subtract 2x on both sides: 2x - 2 = 0
[Addition Property of Equality] Add 2 on both sides: 2x = 2
[Division Property of Equality] Divide 2 on both sides: x = 1

8 0

3 years ago

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