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skelet666 [1.2K]
1 year ago
13

If

Mathematics
1 answer:
daser333 [38]1 year ago
4 0

The expression that equals 3C+3D in standard form is:

x²+7x+1

Given:

C = -x+2

and D = x²+8x-1

we are asked to find out an expression which equals 3C+3D in standard form.

based on the conditions, formulate:

3C+3D

substitute C and D values.

⇒ 3(-x+2) + 3(x²+8x-1)

Apply multiplicative distribution law:

⇒ open the parenthesis.

⇒ -3x+6+3x²+24x-3

calculate the product or quotient

⇒ arrange the like terms.

⇒ 3x²+21x+3

⇒ Reduce the terms.

⇒ x²+7x+1

Hence we get the equation in standard form.

Learn more about Standard equations here:

brainly.com/question/22688504

#SPJ9

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Mr. Lawrence used 100 tiles when he put a new floor in the kitchen 34 tiles are squares and 16 tiles are rectangles write the to
Oliga [24]
<h3>Fraction of square tiles  = (\frac{4}{25})   = 0.16</h3><h3>Fraction of rectangle tiles  = (\frac{17}{50})   = 0.34</h3>

Step-by-step explanation:

Total number of tiles to be used in the kitchen = 100

The total number of square tiles  = 34

The total number of rectangle tiles  =  16

Now, calculating the total fraction of square tiles:

The fraction of square tiles  = \frac{\textrm{Total number of square tiles}}{\textrm{Total number of tiles}}  = \frac{16}{100}   = \frac{4}{25}

Also, solving the fraction, we get \frac{4}{25}  = 0.16

So, the decimal value of square tiles  = 0.6

Calculating the total fraction of rectangle tiles:

The fraction of rectangle tiles  = \frac{\textrm{Total number of rectangle tiles}}{\textrm{Total number of tiles}}  = \frac{34}{100}   = \frac{17}{50}

Also, solving the fraction, we get \frac{17}{50}  = 0.34

So, the decimal value of rectangle tiles  = 0.34

4 0
2 years ago
The larger of two numbers is 7 times the smaller number. Three times the larger number is 7 more than 4 times the smaller number
V125BC [204]
X>Y
X=7Y
3X=7+4Y
X=?
Y=?
----------------------------
3*7=7+4Y
21Y=7+4Y
21Y-4Y=7
17Y=7
Y=7/17
----------------------
X=7*7/17
X=49/17
6 0
3 years ago
What is 2x= 10<br> what is x
IRISSAK [1]

If 2x=10 then x=5 because 2\cdot5=10.

Hope this helps.

3 0
3 years ago
A Recipe calls for 1/2 cup of tomatoes for everyone 1/8 cups of jalapeños if you accidentally poured in 1 1/2 cups of tomatoes h
slavikrds [6]

Answer:

She should use 3/8 cup of jalapenos.

Step-by-step explanation:

This is because 1 1/2 is three times of 1/2 so you times 1/8 by three as well which equals to 3/8 cup of jalapenos.

8 0
3 years ago
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I think its 160 because if its 5 or more round up if 4 or less round down so 164 the 4 is less so its 160
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3 years ago
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