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2 years ago

Can someone help me pls

Mathematics

2 answers:

babymother [125]2 years ago

5 0

It’s an isosceles triangle so it’s 4

Levart [38]2 years ago

3 0

Answer:

Step-by-step explanation:

the side with the 4 and s both have the degrees of 45 which are the same degrees which means they are the same length

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A person invest $2,940 in an account tgat earns 4.1% annual intrest. Find when the value of the investment reaches 5,000. If nec

serg [7]

Answer:

13.22

Step-by-step explanation:

were solving for t and we know:

a(t)=p(1+(r/n))^nt

5000=a-the total

2940=p-the starting amount

.041=r-the rate

1=n-compound (annual)

plug this into a graph :

5000=2940(1+(.041/1))^x

and you get : 13.22

7 0

3 years ago

The beginning balance of a credit card account is $500. The monthly interest rate is 0.012. If a payment of $100 is made on the

OLga [1]

I think its 1.012(500 - 100) = 400* 1.012 = 404.80 dollars

6 0

3 years ago

Read 2 more answers

Solve the equation: .2x(.7x-5)+0.2=1.4(x-1.6)

Ilia_Sergeevich [38]

9514 1404 393

Answer:

x = 8/7

Step-by-step explanation:

.2(.7x-5)+0.2=1.4(x-1.6) . . . . given

Eliminating parentheses, we have ...

0.14x -1 +0.2 = 1.4x -2.24

1.44 = 1.26x . . . . . . . add 2.24-0.14x to both sides

x = 1.44/1.26 . . . . . . divide by the coefficient of x

x = 8/7 . . . . . . . . . . .simplify the fraction

As a repeating decimal, the value of x is ...

$x=1.\overline{142857}$

However, the notation 1.(142857) is usually reserved for the case where the contents of parentheses are being multiplied by the factor in front. You would need to consult your instructions to see how the decimal version of the answer should be entered. (Quite often, rounding is suggested.)

_____

<em>Additional comment</em>

The equation in the text of your question is different from the one in the picture. We have answered for the one in the picture. The text asks for the solution of a quadratic. Those two solutions are approximately 1.085 and 16.057.

6 0

3 years ago

Read 2 more answers

What is 5 days 6 hours 20 minutes minus 3 days 8 hours 40 minutes

Svet_ta [14]

1 day 21 hours 40 minutes is your answer

8 0

3 years ago

For 0 ≤ θ < 2 π what are the solutions to sin^2(θ) =2sin^2(θ/2)

gregori [183]

Recall the half-angle identity for sine,

sin²(x/2) = (1 - cos(x))/2

Then the given equation is identical to

sin²(θ) = 1 - cos(θ)

Also recall the Pythagorean identity,

sin²(θ) + cos²(θ) = 1

Then we rewrite the equation as

1 - cos²(θ) = 1 - cos(θ)

Factoring the left side, we have

(1 - cos(θ)) (1 + cos(θ)) = 1 - cos(θ)

and so

(1 - cos(θ)) (1 + cos(θ)) - (1 - cos(θ)) = 0

and we factor this further as

(1 - cos(θ)) (1 + cos(θ) - 1) = 0

which gives

cos(θ) (1 - cos(θ)) = 0

Then either

cos(θ) = 0 or 1 - cos(θ) = 0

cos(θ) = 0 or cos(θ) = 1

[θ = arccos(0) + 2nπ or θ = -arccos(0) + 2nπ]

… or [θ = arccos(1) + 2nπ or θ = -arccos(1) + 2nπ]

(where n is any integer)

[θ = π/2 + 2nπ or θ = -π/2 + 2nπ] or [θ = 0 + 2nπ]

In the interval 0 ≤ θ < 2π, we get three solutions:

• first solution set with n = 0 ⇒ θ = π/2

• second solution set with n = 1 ⇒ θ = 3π/2

• third solution set with n = 0 ⇒ θ = 0

So, the first choice is correct.

6 0

2 years ago