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3 years ago

Find the four arithmetic means between 10 and -30. What is the common difference?

Mathematics

2 answers:

Semmy [17]3 years ago

7 0

Ummm... I'm not sure if it 100% right but ....

a = -30
a_6 = 10
10 = -30+5d
d = 8
-30 -22 -14 -6 2 10
So , the answer -22 -14 -6 2

Vinil7 [7]3 years ago

4 0

The common difference is d=8. The four arithmetic means are:
-22,-14,-6,2

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2 years ago

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fomenos

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Step-by-step explanation:

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3 years ago

Which equation represents the relationship shown in the table?

Mila [183]

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3 years ago

Read 2 more answers

A line is drawn so that it passes through the points (-3, -1) and (4, 2).

marishachu [46]

Answer:

(A) $\boxed{\bold{y=\frac{3}{7}x+\frac{2}{7}}}$

(B) $\boxed{\bold{2 \ = \ \frac{3}{7} * \ 4 \ + \ \frac{2}{7} }}$

Explanation:

(A) Slope: y = mx + b

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b = 2/7

Slope = $\bold{\frac{y_2-y_1}{x_2-x_1}}$

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Y intercept

$\bold{y=\frac{3}{7}x+b}$

Plug in $\bold{\left(-3,\:-1\right)\mathrm{:\:}\quad \:x=-3,\:y=-1}$

$\bold{-1=\frac{3}{7}\left(-3\right)+b}$

Isolate B

$\bold{-1=\frac{3}{7}\left(-3\right)+b}$

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3 years ago

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If two sides of a triangle are 5 and 7 inches longer than the third side and the perimeter measures 21, find the length of each

aleksandr82 [10.1K]

Hello

x
x +5
x + 7

x + x + 5 + x + 7 = 21
3 x = 21 - 12
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3 years ago