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4 years ago

Find the first, fourth, and eighth terms of the sequence. A(n)=-2 × 2^N-1

1 answer:

7 0

an=(−2x)(2−1)Step 1: Divide both sides by n.ann=−xna=−xnAnswer:a=−xn

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1. $20,000 placed in a saving account at 4% for 5yrs

Alecsey [184]

Answer:

you will earn 4000 after 5 yr.

Step-by-step explanation:

to find out you need to multiply 20000 by .04 to get 800 per year then multiply that by 5 which gives you 4000

5 0

3 years ago

1. Two angles of a quadrilateral measure 140° and 80°. T1. The other two angles are in a ratio of 3:4. What is the value of x? W

Makovka662 [10]

Answer:

Angles are 3x, 4x = $60\°,80\°$

Angles from lowest to highest: $60\°,60\°,80\°,140\°$

Step-by-step explanation:

Given: Two angles of a quadrilateral measure 140° and 80°. The other two angles are in a ratio of 3:4.

To find: value of x, measures of those two angles and

Also, to list the measures of the other two angles from lowest to highest.

Solution:

According to angle sum property of a quadrilateral, sum of angles of a quadrilateral is 180°.

Let the two angles be 3x and 4x

$3x+4x+140\°+80\°=360\°\\7x+220\°=360\°\\7x=360\°-220\°=140\°\\x=\frac{140\°}{7}=20\°\\$

So, angles are as follows:

$3x=3(20\°)=60\°\\4x=4(20\°)=80\°$

Angles from lowest to highest: $60\°,60\°,80\°,140\°$

5 0

3 years ago

Express 3.5 cm into metre

TEA [102]

Answer:

$\boxed {\red {0.035m}}$

Step-by-step explanation:

$1m = 100cm \\ x = 3.5cm$

$use \: \: cross \: \: multipication$

$3.5 \times 1 = 100 \times x \\ 3.5 = 100x \\ \frac{3.5}{100} = \frac{100x}{100} \\ x = 0.035m$

8 0

4 years ago

Will make brainlieist

Alexxx [7]

Answer:

Yo download sorcratic on your phone it can give the answers

7 0

4 years ago

Read 2 more answers

I need help with this question pls

Andrej [43]

Answer:61.8°

Step-by-step explanation:

Length of arc=(theta)/360 x 2 x π x radius

9.7=(theta)/360 x 2 x 3.14 x 9

9.7=56.52(theta)/360

cross multiply

9.7 x 360=56.52(theta)

3492=56.52(theta)

Divide both sides by 56.52

3492/56.52=56.52(theta)/56.52

61.8=theta

theta=61.8°

7 0

3 years ago