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3 years ago

7

Mathematics

1 answer:

poizon [28]3 years ago

3 0

Answer:

4:3

Step-by-step explanation:

24/8=3 there are 3 blue beads to __ purple beads

32/8=4 there are __ blue beads to 4 purple beads

there are 3 blue beads to 4 purple beads

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ABC stock sold for $64.50 four days later the same stock sold for $47.10 what is the average change per day?

frozen [14]

So you subtract 64.50 - 47.10 and it equals 17.4 and then you divide that by 4 and your answer is 4.35

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3 years ago

Evaluate the expression when x=14 and y=12.

mina [271]

Answer: 348

Step-by-step explanation:

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3 years ago

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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:

#LearnwithBrainly

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3 years ago

Solve 6x(6x) + 11x - 35 = 0

Murljashka [212]

$36x^2 + 11x - 35=0\\\\ \frac{-b \pm \sqrt{ b^2 -4( a)(c)} }{2(a)}\\\\ \frac{-11\pm \sqrt{11^2 -4(36)(-35)} }{2(36)}\\ \\ \frac{-11\pm \sqrt{5161 } }{72}\\\\\\ x = 0.8450013919812116\\\\ \text{ } x = -1.1505569475367672$

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3 years ago

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What is the value of this expression when a=4, b=-5, and c=-7?

nasty-shy [4]

Answer: C. 6 1/6

Step-by-step explanation:

2 * -5 * -7 = -10 * -7 = 70

70 + 4 = 74

3 * 4 = 12

74/12 = 6 1/6

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3 years ago