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mario62 [17]
2 years ago
7

Which pair of expressions is equivalent? 2(x + 5) and 2x + 10 B. 3x – 6 + 4x + 9 and 7x + 15 0. C. 4y - 2) and 4y - 2 0 D. 5y +

12 - 3y and 2y – 12​
Mathematics
1 answer:
kari74 [83]2 years ago
7 0

Answer:

A

Step-by-step explanation:

the equivalent pair of expression are 2(x+5)and 2x+10

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Can you solve d-3/5=6 before multiplying by 5 reasoning yes or no and why?
Luda [366]

Answer:

yes you can

apart from getting rid of the denominator you can collect like terms

Step-by-step explanation:

d=6-3/5

6=30/5

30/5-3/5

27/5

d=27/5

5 0
3 years ago
COPY THE TABLE BELOW IN YOUR NOTEBOOK. THEN ROUND EACH ITEM TO THE NEAREST HUNDREDTHS AND THOUSANDS​
kobusy [5.1K]
What’s the items number. ? When rounding everything in front of the decimal find the place value it wants you to round then if it’s 5 or below round the the lowest whole number. If it’s behind a decimal you would do the same thing. It’s the number is higher than 5 round it up.
8 0
3 years ago
Find the length of side X
NISA [10]

Answer:

C

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the 2 other sides, that is

x² + 6² = 17²

x² + 36 = 289 ( subtract 36 from both sides )

x² = 253 ( take the square root of both sides )

x = \sqrt{253} → C

7 0
3 years ago
Sofia cuts a piece of felt in the shape of a kite for an art project. The top two sides measure 20 cm each and the bottom two si
Phantasy [73]

x + y  = 24       where x and y are the 2 parts of diagonal Other diagonal wil be smaller that 24. 
x^2 + z^2 = 13^2
y^2 + z^2  = 20^2            where z  = 0.5 * length of smaller diagonal)

form last 2 equations

y^2 - x^2  = 20^2 - 13^2  =  231
 now y = 24-x so we have

(24 - x)^2    - x^2 = 231

576 - 48x = 231

48x = 345

x =  7.1875

z^2  =  13^2 - 7.1875^2 =  117.34
z =  1.83

so smaller diagonal = 21.66 cm


looks like its the third choice.



5 0
3 years ago
Which graph represents this equation? <br> Equation: y = 2/3x^2 - 6x
vovangra [49]

Answer:

I'm afraid that none of them are, as the x-intercepts of the equation are 0 and 9 respectively

however, D. is the closest to it, and it would be the correct graph if there were parentheses around x^{2}-6x

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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