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3 years ago

Can you help me on B and C! plz help me

Mathematics

1 answer:

Gre4nikov [31]3 years ago

6 0

B is 4 times 3 is twelve so the equation would be shape number times 3 equals the number of toothpicks. C is you could write it as number of toothpicks divided by 3 equals the shape number. I'm not sure tho

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leva [86]

Z score = 66 - 76
---------- = - 1
10

from the tables of normal distribution this corresponds to 0.34-3 of the area under the normal curve
so reuired number od students = 0.3413 * 230 = 78

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4 years ago

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Q # 6 please multiply help

Mkey [24]

This is a problem of Difference-of-squares. We know that for a difference of squares $a^2-b^2$ the factorization is given by:

$(a-b)(a+b)$

To learn this you need to remember that a difference means subtraction. So applying those concepts we can solve this problem step by step.

Applying distributive property:

$(2n)(2n-2)+2(2n-2)$

Applying distributive property again:

$4n^2-4n+4n+4$

Simplifying:

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The correct answer is C

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3 years ago

(1 + 7x) - 6 * (-7 - x) = 36 step pls

AlladinOne [14]

Answer:

-7/13

Step-by-step explanation:

(1 + 7x) - 6 * (-7 - x) = 36 Distribute the 6 into (-7 - x)

1 + 7x + 42 + 6x = 36 Combine like terms (1 + 42) & (7x + 6x)

43 + 13x = 36 Subtract 43 from both sides

13x = -7 Divide by 13

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4 years ago

At best buy they have a 42” TV that sells for $1250 and is on sale for 15% and sales tax is 6.5%. What is the final cost? (Hint:

CaHeK987 [17]

Answer:

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3 years ago

Calculate the size of θ in the given diagram ( see image). O is the center of the circle.

mariarad [96]

Answer:

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Step-by-step explanation:

90 - 48 = 42° because 48 and 42 are complimentary angles (add up to 90°)

because the radii lines form an isosceles triangle, ∠∅ also = 42°

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3 years ago

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