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2 years ago

Hello, i need some help, thanks <3

Mathematics

2 answers:

Softa [21]2 years ago

8 0

Answer:

Step-by-step explanation:

The whole thing is wrong

31 - 12 = x

X = 19

Hope this helped thanks.

OleMash [197]2 years ago

6 0

Answer:

Melody added 12 to both sides when she should've subtracted 12 from both sides.

X = 19

Step-by-step explanation:

When solving equations, you have to do the opposite operation given on both sides of the equation. In this case, the operation that's happening is addition, so we have to subtract 12 from both sides.

Step 1: Subtract 12 from both sides.

$x+12-12=31-12$
$x = 19$

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How can numbers be expressed, ordered, and compared

fiasKO [112]

Compare or order the digits that are different, Write > or <. or use a number line 44 < 72
Say:
"44 is less than 72" Or you can look at the place value. You can express using an exponent, an octet and many more

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3 years ago

Find the lowest common denominator of p+3/p2+7p+10 and p5/p2+5p+6

Sunny_sXe [5.5K]

(P+1)(p+2)(p+5) is LCM

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3 years ago

Read 2 more answers

The state of Maine encourages recycling by giving refunds for certain recycled items. When you recycle a glass bottle, you get b

Klio2033 [76]

Given that cost of 1 drinks in a glass bottle = $2.00

Given that cost of 1 drinks in an aluminum can = $0.50

Given that cost of 1 drinks in a plastic bottle = $1.50

Then sum of costs of 1 drink from each will be = 2.00+0.50+1.50

Given that you buy two of each then total cost will be given by 2(2.00+0.50+1.50)

Hence expression that represents the amount of money you will spend is 2(2.00+0.50+1.50).

Using distributive property, we can rewrite it as:

2(2.00+0.50+1.50)=2*2.00+2*0.50+2*1.50

This is final answer of part A.

----------

Given that refund on 1 drinks in a glass bottle = $0.05

Given that refund on 1 drinks in an aluminum can = $0.10

Given that refund on 1 drinks in a plastic bottle = $0.15

Then sum of refunds on 1 drink from each will be = 0.05+0.10+0.15

Given that you plan to recycle all of the items you purchased then total refund will be given by 2(0.05+0.10+0.15)

Hence expression to represent the amount of refund you will receive is 2(0.05+0.10+0.15).

Using distributive property, we can rewrite it as:

2(0.05+0.10+0.15)=2*0.05+2*0.10+2*0.15

This is final answer of part B.

----------

Net cost is given by difference of total cost and total refund

Net cost = 2(2.00+0.50+1.50) - 2(0.05+0.10+0.15)

= 2*2.00+2*0.50+2*1.50 - (2*0.05+2*0.10+2*0.15)

= 4+1+3 - (0.10+0.20+0.30)

= 8 - 0.60

= 7.40

Hence net cost is $7.40

5 0

3 years ago

ALGEBRA 1, SEMESTER 2

SIZIF [17.4K]

So firstly, we have to find f(x) when x = 8 and x = 0. Plug the two numbers into the x variable of the function to solve for their f(x):

$f(0)=\frac{2*0+3}{3*0-3}\\ f(0)=\frac{0+3}{0-3}\\ f(0)=\frac{3}{-3}\\ f(0)=-1\\ \\ f(8)=\frac{2*8+3}{3*8-3}\\ f(8)=\frac{16+3}{24-3}\\ f(8)=\frac{19}{21}$

Now that we have their y's, we can use the slope, aka average rate of change, formula, which is $\frac{y_2-y_1}{x_2-x_1}$ . Using what we have, we can solve it as such:

$\frac{\frac{19}{21}-(-1)}{8-0}=\frac{\frac{40}{21}}{8}=\frac{40}{21*8}=\frac{40}{168}=\frac{5}{21}$

In short, the average rate of change from x = 0 to x = 8 is 5/21.

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3 years ago

If the roots of a quadratic equation are -4 and 2, the equation is equivalent to

pickupchik [31]

Answer:

x^2-2x-8

Step-by-step explanation:

-4, 2

(x-4)(x+2) solve that, and it equals to that equation.

4 0

2 years ago

Hello, i need some help, thanks <3​

Hello, i need some help, thanks <3