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2 years ago

Plz help ill give you brainlist to you

Mathematics

1 answer:

Nastasia [14]2 years ago

8 0

First one the answer is A; Alexander needs 70 ft

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Please help me, I need this by today. I will mark as brainliest if you help. Please give correct answer. Thank you very much.

timama [110]

Answer:

it would be decreased by 15% lol

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Solve ABC <br>c=10, B=35°, C=65%

NISA [10]

Answer:

Part 1) The measure of angle A is $A=80\°$

Part 2) The length side of a is equal to $a=10.9\ units$

Part 3) The length side of b is equal to $b=6.3\ units$

Step-by-step explanation:

step 1

Find the measure of angle A

we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

$A+B+C=180\°$

substitute the given values

$A+35\°+65\°=180\°$

$A+100\°=180\°$

$A=180\°-100\°=80\°$

step 2

Find the length of side a

Applying the law of sines

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{a}{sin(80\°)}=\frac{10}{sin(65\°)}$

$a=\frac{10}{sin(65\°)}(sin(80\°))$

$a=10.9\ units$

step 3

Find the length of side b

Applying the law of sines

$\frac{b}{sin(B)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{b}{sin(35\°)}=\frac{10}{sin(65\°)}$

$b=\frac{10}{sin(65\°)}(sin(35\°))$

$b=6.3\ units$

5 0

2 years ago

Last year, Raina had $10,000 to invest. She invested some of it in an account that paid 9% simple interest per year, and she inv

kaheart [24]

Answer:

7000 in the account that paid 9% interest rate and 3000 in the account that paid 8% interest rate

Step-by-step explanation:

Let $x be invested in account 1 and $(10000-x) in the second account

Then, 870=x*9/100+(10000-x)*8/100

x=$7,000.

4 0

2 years ago

I need the answer to this problem please help me

LekaFEV [45]

I'm pretty sure both B and C equal 12 as well
Since the triangle equals 180 and the angels are all congruent

7 0

2 years ago

Which describes the difference between the two sequences?

mash [69]

Answer:

its a)the first sequence is geometric bc of the common ratio of 2. the second sequence is arithmetic bc of the common difference of 7.

8 0

2 years ago