1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tamaranim1 [39]
3 years ago
10

part of the river she observed fell 1.68 millimeters per year for 1.5 years. Use the distributive property to calculate the exac

t variation in water level for the time period.
Mathematics
1 answer:
Alecsey [184]3 years ago
8 0
1.68 mm per year for 1.5 years could be rewritten as 
(2.00-0.32) mm per year for 1.5 yrs.

Multiply:  (1.5 yrs)(2.00-0.32)(mm/yr) = 3 mm + 0.48 mm = 3.48 mm

This approach makes use of the distributive property of multiplication.
You might be interested in
Claire invests £200,000 in a savings account for 4 years. The account pays a compound interest of 1.6% annum. Calculate the tota
AURORKA [14]

Answer: total amount of interest = £13110.49

Step-by-step explanation:

given that the

Principal P =  £200,000

Time t = 4 years.

Rate R = 1.6% 

Amount = P( 1 + R% )^t

Amount = 200000( 1 + 1.6%)^4

Amount = 200000 (1.016)^4

Amount = 200000 × 1.06555245

Amount = £213110.49

The total amount of interest = amount - principal

Total amount of interest = 213110.49 - 200000

The total amount of interest = £13110.49

Therefore, Claire will get a total amount of interest of £13110.49 at the end of four years

6 0
3 years ago
What is the length of the radius in circle C
xenn [34]
The radius of circle C is 2π
6 0
3 years ago
Create two problems that require you to solve using the patterns of both 45-45-90 and 30-60-90 and then solve each problem, show
Ne4ueva [31]
See the attached image for the drawings of the 45-45-90 triangle and the 30-60-90 triangle.

----------------------------------------------

For the 45-45-90 triangle, the two legs are both 3 while the hypotenuse is unknown. Call it x for now.

Using trig we can say
sin(angle) = opposite/hypotenuse
sin(A) = BC/AC
sin(45) = 3/x
sqrt(2)/2 = 3/x
sqrt(2)*x = 2*3
sqrt(2)*x = 6
x = 6/sqrt(2)
x = (6/sqrt(2))*(sqrt(2)/sqrt(2))
x = (6*sqrt(2)/(sqrt(2)*sqrt(2))
x = (6*sqrt(2)/(2)
x = 3*sqrt(2)

where "sqrt" is shorthand for "square root"

----------------------------------------------

For the 30-60-90 triangle, we can say

cos(angle) = adjacent/hypotenuse
cos(D) = DE/FD
cos(60) = 4/y
1/2 = 4/y
1*y = 4*2
y = 8

and we can also say
sin(angle) = opposite/hypotenuse
sin(D) = EF/FD
sin(60) = z/y
sin(60) = z/8
8*sin(60) = z
z = 8*sin(60)
z = 8*sqrt(3)/2
z = (8/2)*sqrt(3)
z = 4*sqrt(3)

6 0
3 years ago
Emily is dividing 15 pounds of jelly beans into 3/4
oee [108]
Correct answer is 20 bc 15 divided by 3/4 or .75 is 20
7 0
3 years ago
MORE HELP :( acellus work
Ivenika [448]

A<u> triangle</u> is a <em>plane shape</em> bounded by three straight sides, thus it has three internal <em>angles</em>. Therefore, the required <em>values</em> are:

i. x = 40^{o}

ii. y = 120^{o}

A <em>plane shape</em> is a figure bounded by<u> straight</u> sides. Examples are triangles, squares, rectangles, rhombus, kite, trapezium, etc. A triangle is an example of a plane shape that has three<em> sides</em>, thus three <u>angles.</u> also, the sum of <em>angles</em> in a given triangle is 180^{o}.

Thus the required values of x and y can be determined as follows:

x + 20 + 120 =  180^{o}

x + 140 =  180^{o}

x =  180^{o} - 140

So that,

x = 40^{o}

Thus,

y = 20 + 120 (the sum of<em> opposite</em> angles is <em>equal</em> to an exterior angle.)

            = 120^{o}

Therefore, x = 40^{o} and y = 120^{o}

For more clafifications on sum of angles in a traingle, visit: brainly.com/question/21680544

#SPJ1

7 0
2 years ago
Other questions:
  • Suppose hamburger buns cost $1.79 per package. how much would it cost to buy 6 packages?
    15·2 answers
  • What are the coordinates of the pre-image of B'?
    8·2 answers
  • What is 66 tens- 38 tens
    7·1 answer
  • the perimeter of a rectangle is 18 inches what are the possible lengths and widths if the side lengths are whole numbers
    5·1 answer
  • Specialty tshirts are being sold for $30.........
    13·1 answer
  • Different varieties of field daisies have numbers of petals that follow a fibonacci sequence.Three varieties have 13,21, and 347
    14·1 answer
  • Can y’all help me on question 13?!
    15·2 answers
  • On average, light emitted from the Sun takes minutes seconds to reach Earth. Using your approximated speed of light from part (b
    12·1 answer
  • What common denominator would you use to find equivalent, fractions to compare 4/8, 3/4, and 1/2?
    14·2 answers
  • Please help me asap!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!