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Papessa [141]
4 years ago
13

What is the value of x

Mathematics
1 answer:
barxatty [35]4 years ago
3 0
X = 15


X + 90 = 7x

X = 7x - 90

X - 7x = -90

-6x = 90

Divide both sides by -6

X = 15
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Tan theta = 15/8<br><br> Find sin theta<br> Find cos theta
lapo4ka [179]
Tan is opposite/adjacent = 15/8

Sin = opp/hyp
Cos = adj,/ hyp
Use Pythagorean theorem to find hypotenuse
15^2 + 8^2 = c^2
225+64= 289
√289= c
c=17
Sin = 15/17
Cos= 8/17
8 0
4 years ago
A number is chosen at random from the first 100 positive integers. Find the probability that the number is divisible by 5. 1/10
rosijanka [135]
The number of multiples of 5 from 1 to 100 is:

1≤5n≤100

1/5≤n≤20, since n must be an integer

1≤n≤20

So the multiples of five number 20-1+1=20 elements, and the probability of choosing one of the multiples from the first 100 positive integers is:

P(5n)=20/100=1/5
3 0
4 years ago
Ley de senos Ángulo a) 14.04 b) 146.31
Svetlanka [38]

Answer:

a

Step-by-step explanation:

4 0
3 years ago
20 copies of the school yearbook together weigh 50 lb what is the weight of each book
dedylja [7]

Answer:

2.5 pounds per book

Step-by-step explanation:

Set up a proportion

20 copies / 50 pounds = 1 copy / x pounds

Cross multiply

20x = 50

Divide both sides by 20

x = 2.5 pounds


I hope this helped and please mark me as brainliest!

6 0
2 years ago
$800 is invested at a rate of 7%. What will be the total amount of the investment after 3 1/2 years?
torisob [31]

Answer:

A = $996.00

Step-by-step explanation:

(I = A - P = $196.00)

Equation:

A = P(1 + rt)

Where:

A = Total Accrued Amount (principal + interest)

P = Principal Amount

I = Interest Amount

r = Rate of Interest per year in decimal; r = R/100

R = Rate of Interest per year as a percent; R = r * 100

t = Time Period involved in months or years

From the base formula, A = P(1 + rt) derived from A = P + I and I = Prt so A = P + I = P + Prt = P(1 + rt)

Calculation:

First, converting R percent to r a decimal

r = R/100 = 7%/100 = 0.07 per year.

Solving our equation:

A = 800(1 + (0.07 × 3.5)) = 996

A = $996.00

The total amount accrued, principal plus interest, from simple interest on a principal of $800.00 at a rate of 7% per year for 3.5 years is $996.00.

4 0
3 years ago
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