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2 years ago

Simplify the expression by combining like terms: 5c2 + 13c + 4 – 7c + 9

Mathematics

2 answers:

Burka [1]2 years ago

7 0

Answer:

${5c}^{2} + 6c + 13$

Step-by-step explanation:

1) Collect like terms.

${5c}^{2} (13c - 7c) + (4 + 9)$

2) Simplify.

${5c}^{2} + 6c + 13$

Therefor, the answer is 5c² + 6c + 13.

PIT_PIT [208]2 years ago

3 0

Answer:

5c^2 +6c +13

Step-by-step explanation:

so we can see than 5c^2

and 13c - 7c are the same = 6c

and 4 +9 = 13

so answer will 5c^2 +6c +13

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olchik [2.2K]

Answer: x = 1 and y = 2

Step-by-step explanation:

Solve for y in the first equation by adding 2x to both sides

$y=2x$

Then plug this in for the y value in the second equation

$3x+4(2x)=11$

Combine like terms and simplify

$3x+8x=11\\11x=11\\x=1$

Plug x into either equation to find the y value

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3 0

3 years ago

For every 5 coins Carmen gets she gives 2 to her brother frankie if carmen has 9 coins how many does frankie have

Setler [38]

Lets write this as a ratio 1st.

For every 5 coins Carmen gives Frankie 2

5:2

9:?

5 - 2 = 3

So 3:2

9 ÷ 3 = 3

3 × 2 = 6

So, Caamen has 9 coins and Frankie has 6 coins.

Hope I helped ya!!!!!!

5 0

2 years ago

Read 2 more answers

5-7 please help BRAINLEST

BARSIC [14]

Answer:

k=17

Step-by-step explanation:

k+10=27

k=27-10

k=17

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3 years ago

Read 2 more answers

Find the area of the region between the curve y= 2ln(x) and the horizontal axis for 1<= x <= 4

marissa [1.9K]

Answer:

5.09 units

Step-by-step explanation:

Given equation

$y=2\ln x=f(x)$ in the interval $1\le x\le 4$

So we integrate $y$ in the given interaval

$\int f(x)=2\int\limits^4_1 {\ln x}dx$

Let us integrate $\ln x$ first.

let

$u=\ln x, dv=dx$

$du=\dfrac{1}{x}, v=x$

$\int\ln x dx=udv$

Using integration by parts we get

$uv-\int vdu$

$=x\ln x-\int x\dfrac{1}{x}dx$

$=x\ln x-dx$

$=x\ln x-x+C$

So here

$\int f(x)=2\int\limits^4_1 {\ln x}dx\\ =2(x\ln x-x)_1^4\\ =2[(4\ln 4-4)-(1\ln 1-1)]\\ =2[4\ln 4-4+1]\\ =5.09\ units$

The area of the the region between the curve and horizontal axis is 5.09 units.

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2 years ago

Geometry help will give brainliest it wasn't C what is it

mote1985 [20]

I think the answer would be d.
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3 years ago