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Helga [31]
3 years ago
8

Which expression is equivalent to a + (c + 7)?

Mathematics
1 answer:
Elina [12.6K]3 years ago
3 0

Answer:

(a + c) + 7

Step-by-step explanation:

Because the only type of math in this expression is addition, whatever way you write it (keeping only plus signs), the answer will be the same. So,              a + (c + 7) is equal to (a + c) + 7.

I hope this helps!

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What is the area of this irregular figure knowing that the formula for the area of a rectangle is l x w.
Lubov Fominskaja [6]

9514 1404 393

Answer:

  42 cm²

Step-by-step explanation:

The attachment shows a couple of ways the figure can be considered.

a) Left and Right rectangles that are 5 cm high and 3 cm wide, together with a central rectangle that is 3 cm high and 4 cm wide. Then the total area is ...

  5×3 + 3×4 + 5×3 = 15 + 12 + 15 = 42 . . . . cm²

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b) An enclosing rectangle that is 5 cm high and 10 cm wide with a cut-out that is 2 cm high and 4 cm wide. Then the total area is ...

  5×10 -2×4 = 50 -8 = 42 . . . . cm²

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The area of the irregular figure is 42 cm².

3 0
3 years ago
Josie bought 750 bags of peanuts for $375 he intends to sell each bag for $.15 more than you paid how much should he charge for
STatiana [176]

Step-by-step explanation:

Jose bought 750 bags for $375.00

Each bag cost $375/750= $0.50

He  intends to sells them for $0.15 more

He should charge : $0.5 +$0.15=$0.65

6 0
3 years ago
Pls fast,i need it<br> ..............................
Ghella [55]

Answer:

hints to solve each. partial answer due to lack of time, hope it helps!

Step-by-step explanation:

1)

a) solve ():

5 \sqrt{3} + 7 \sqrt{3} - 9 \sqrt{3} - 6 \sqrt{3} + 12 \sqrt{3} - 10 \sqrt{3} =

\sqrt{3} . (5 +7-9-6+12-10)

b) use \sqrt{6\\} = \sqrt{3\\}\\\\\sqrt{2\\}\\\\

c) use \sqrt{20\\} = \sqrt{4\\}\\\\\sqrt{5\\}\\\\ = 2\sqrt{5\\}\\\\

use \sqrt{8\\} = \sqrt{4\\}\\\\\sqrt{2\\}\\\\ = 2\sqrt{2\\}\\\\

2)

a) use \sqrt{30\\} = \sqrt{6}\sqrt{5}

use \sqrt{30\\} = \sqrt{6}\sqrt{4} = 2\sqrt{6}

6 0
2 years ago
Help Me With This Question Please!
Stolb23 [73]

i think the answer is 1265

7 0
3 years ago
Read 2 more answers
Perform the indicated operations. give answers in simplified form.<br><br> √9/25
tino4ka555 [31]
\sqrt{\frac{9}{25}} = \frac{\sqrt{9}}{\sqrt{25}} = \frac{3}{5}
8 0
3 years ago
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