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2 years ago

523 - 99 = 324 424 262 622

Mathematics

1 answer:

givi [52]2 years ago

8 0

523 - 99 = 424
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Which of these triangles appears not to be congruent to any others shown

Wittaler [7]

Answer:

B, C, F

Step-by-step explanation:

B- has different lengths for each side and different angles

C-has different lengths for each side and different angles

F-has different lengths for each side and different angles

Non congruent triangles means if shape is reflected or rotated they would not look the same. Congruent triangles have same equal length and angles are equal in measure.

3 0

2 years ago

Elizabeth is x years old. Her brother Jim is

postnew [5]

If Jim's age = j

j = 3x + 2

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3 years ago

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What is the y-intercept of a line that has a slope of 1/4 and passes through point (8,3)

Sedbober [7]

Answer:

Step-by-step explanation:

point slope formula: y-y1=m(x-x1)

y-(3)= $\frac{1}{4}$ (x-(8))

y-3= $\frac{1}{4}$ x-2

y= $\frac{1}{4}$ x+1

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2 years ago

What's the explicit rule for the sequence 3, -6, 12, -24, 48, ...?

777dan777 [17]

Answer:

$\sf \dfrac{-3}{2}(-2)^n$

Step-by-step explanation:

Explicit formulas are used to represent all the terms of the geometric sequence with a single formula.

$\sf \boxed{\bf t_n = ar^{n-1}}$

a is the first term.

r is the common ratio.

r = second term ÷ first term.

3 , - 6 , 12, - 24, 48 ,........

a = 3

r = -6 ÷ 3 = -2

$\sf t_n = 3*(-2)^{(n-1)}\\\\$

$\sf = 3*(-2)^{n}*(-2)^{-1}\\\\ =3*(-2)^n*\dfrac{-1}{2}\\\\= \dfrac{-3}{2}(-2)^n$

Check:

$\sf t_1 =\dfrac{-3}{2}*(-2)^1=\dfrac{-3}{2}*(-2) = 3\\\\\\t-2 = \dfrac{-3}{2}*(-2)^2 = \dfrac{-3}{2}*4=-6\\\\\\t_3=\dfrac{-3}{2}*(-2)^3=\dfrac{-3}{2}*(-8)=12$

4 0

1 year ago

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Seven times a number minus the number is -48. Find the number.

Wittaler [7]

Remark
Set up the equation from the word problem.

Equation
7*x - x = -48 Combine like terms
6x = - 48 Divide by 6
x = - 48 / 6
x = - 8 <<<<< Answer

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3 years ago

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