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3 years ago

15

Find the measure of angle 1

2 answers:

hichkok12 [17]3 years ago

8 0

Answer:

123°

Step-by-step explanation:

A flat line is 180° so that means 57-180=123 so therefore the angle is 123°

Karo-lina-s [1.5K]3 years ago

6 0

Answer:

123

Step-by-step explanation:

180-57=123

OK OK ok

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Please help im gonna give brainlyist

lawyer [7]

Answer:B or C

Step-by-step explanation:

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3 years ago

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Refer to the previous question.Approximately how much money would be in your account after the third year?(Assume that you do no

motikmotik

The amount of money in the account after t years is given by the function

$f(t)=1000\cdot(1.12)^t$

We want to evaluate how much money would be in your account after the third year, to do it we must put t = 3 in our function, then

$\begin{gathered} f(t)=1000\cdot(1.12)^t \\ \\ f(3)=1000\cdot(1.12)^3 \\ \\ f(3)=1000\cdot1.404928 \\ \\ f(3)=1404.928 \end{gathered}$

And we can approximate to

$\$1404.93$

6 0

1 year ago

I don’t know where to start, I need help.

NeX [460]

Answer:

72 cm^3

Step-by-step explanation:

find the volume of the big block and the volumem of the smaller block and subtract it

(8 x 2 x 5) - (2 x 2 x2)

= 80 cm^3 - 8 cm^3

= 72cm^3

5 0

3 years ago

PLEASE HELP ILL MARK BRAINLIEST !!!

Alexus [3.1K]

Answer:

a) the common difference is 20

b) $x_8=115 , x_{12}=195$

c) the common difference is -13

d) $a_{12}=52, a_{15}=13$

Step-by-step explanation:

a) what is the common difference of the sequence xn

Looking at the table, we get x_3=16, x_4=36 and x_5= 56

Deterring the common difference by subtracting x_4 from x_3 we get

36-16 =20

So, the common difference is 20

b) what is x_8? what is x_12

The formula used is: $x_n=x_1+(n-1)d$

We know common difference d= 20, we need to find $x_1$

Using $x_3=16$ we can find $x_1$

$x_n=x_1+(n-1)d\\x_3=x_1+(3-1)d\\15=x_1+2(20)\\15=x_1+40\\x_1=15-40\\x_1=-25$

So, We have $x_1 = -25$

Now finding $x_8$

$x_n=x_1+(n-1)d\\x_8=x_1+(8-1)d\\x_8=-25+7(20)\\x_8=-25+140\\x_8=115$

So, $\mathbf{x_8=115}$

Now finding $x_{12}$

$x_n=x_1+(n-1)d\\x_{12}=x_1+(12-1)d\\x_{12}=-25+11(20)\\x_{12}=-25+220\\x_{12}=195$

So, $\mathbf{x_{12}=195}$

c) what is the common difference of the sequence $a_m$

Looking at the table, we get a_7=104, a_8=91 and a_9= 78

Deterring the common difference by subtracting a_7 from a_8 we get

91-104 =-13

So, the common difference is -13

d) what is a_12? what is a_15?

The formula used is: $a_n=a_1+(n-1)d$

We know common difference d= -13, we need to find $a_1$

Using $a_7=104$ we can find $x_1$

$a_n=a_1+(n-1)d\\a_7=a_1+(7-1)d\\104=a_1+7(-13)\\104=a_1-91\\a_1=104+91\\a_1=195$

So, We have $a_1 = 195$

Now finding $a_{12}$ , put n=12

$a_n=a_1+(n-1)d\\a_{12}=a_1+(12-1)d\\a_{12}=195+11(-13)\\a_{12}=195-143\\a_{12}=52$

So, $\mathbf{a_{12}=52}$

Now finding $a_{15}$ , put n=15

$a_n=a_1+(n-1)d\\a_{15}=a_1+(15-1)d\\a_{15}=195+14(-13)\\a_{15}=195-182\\a_{15}=13$

So, $\mathbf{a_{15}=13}$

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3 years ago

How are the measures of angles, arcs and segments formed by secant lines that intersect within a circle related?

Drupady [299]

Answer:

The answers below ._.

Step-by-step explanation:

A secant is a line that intersects a circle in exactly two points. When a tangent and a secant, two secants, or two tangents intersect outside a circle then the measure of the angle formed is one-half the positive difference of the measures of the intercepted arcs.

6 0

3 years ago

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