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Lina20 [59]
3 years ago
14

Subtract the sum of −7 and 13 from the sum of −2 and −9 *​

Mathematics
1 answer:
icang [17]3 years ago
6 0

Answer:

-17

Step-by-step explanation:

The sum of -2 and -9 is (-2) + (-9) = -2 - 9 = -11.

The sum of -7 and 13 is 13 - 7 = 6.

Hence, subtracting 6 from -11 would be -11 - 6 = -17.

Hope this helped!

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A necklace has and matching bracelet have two types of beads. The necklace has 12 large beads and 8 small beads and weighs 88 gr
miv72 [106K]

Weight of one large bead is 1.5 grams and weight of one small bead is 8.75 grams.

Step-by-step explanation:

Let,

Weight of one large bead = x

Weight of one small bead = y

According to given statement;

12x+8y=88     Eqn 1

5x+2y=25      Eqn 2

Multiplying Eqn 2 by 4

4(5x+2y=25)\\20x+8y=100\ \ \ Eqn\ 3\\

Subtracting Eqn 1 from Eqn 3

(20x+8y)-(12x+8y)=100-88\\20x+8y-12x-8y=12\\8x=12

Dividing both sides by 8

\frac{8x}{8}=\frac{12}{8}\\x=1.5

Putting x=1.5 in Eqn 1

12(1.5)+8y=88\\18+8y=88\\8y=88-18\\8y=70

Dividing both sides by 8

\frac{8y}{8}=\frac{70}{8}\\y=8.75

Weight of one large bead is 1.5 grams and weight of one small bead is 8.75 grams.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/11334714
  • brainly.com/question/11345547

#LearnwithBrainly

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3 years ago
the expression 16t^2 models the distance in feet that an object falls during t seconds after being dropped. what distance will a
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