ABC and ACD are both right angled triangles. a) explain why the length of AC is 13cm.​

Answer:

A

Step-by-step explanation:

work backwards so do the opposite of what they told you

example: - you do +

multiply, you do divide etc etc

Answer:

Area = 224 square yards

Step-by-step explanation:

Width = 3.5 squares

Length = 4 squares

Multiply to yards (x4)

Width = 14 square yards

Length = 16 square yards

Area = Width*Length

Area = 14 * 16

Area = 224 square yards

Answer:

Have a great tret

Step-by-step explanation:

I dont know what

is it

Answer:

6.4 minutes or 384 seconds

Answer:

163

Step-by-step explanation:

Opposite degrees are equal in two lines. (Vertical Angles)

Answer:

y = 163°

Step-by-step explanation:

The measure of angle y  is 163 ° because vertical angles are congruent and congruent angles have the same measure.

Answer:

B. and C.

Step-by-step explanation:

1. Set the polynomial equal to zero:

x² + 5x + 7 = 0

2. Plug the given values of a, b, and c into the quadratic formula:

[tex]x=\frac{-5+-\sqrt{5^{2}-4(1)(7) } }{2(1)}[/tex]

3. Solve the square root:

[tex]x=\frac{-5+-\sqrt{25-4(1)(7)} }{2(1)}[/tex]

[tex]x=\frac{-5+-\sqrt{25-28} }{2(1)}[/tex]

[tex]x=\frac{-5+-\sqrt{-3} }{2(1)}[/tex]

4. Simplify the rest:

[tex]x=\frac{-5+-\sqrt{-3} }{2}[/tex]

5. Separate the solutions:

[tex]x=\frac{-5+\sqrt{-3} }{2} , x=\frac{-5-\sqrt{-3} }{2}[/tex]

Thus, options B and C are the answers.

hope this helps!

Answer:

17.51

Step-by-step explanation:

this is a right triangle, so sohcahtoa applies

we want x

relative to the angle, x is opposite of it and 25 is adjacent to it (the hypotenuse is the other side)

the formula that combines opposite and adjacent is tan

tanθ = opposite/adjacent

tan(35°) = x/25

multiply both sides by 25 to isolate x

tan(35°) * 25 = x

x ≈ 17.51

Answer:

2.90 % rate

Step-by-step explanation:

Simple intrest (si) = $1219

Principal (p) = $4206

time (t) = 10yrs

rate (r) = ?

Now using formula,

r = ix100/p×t

r = 1219×100/4206×10

r = 2.90 ( in calculator it will show 2.898 if the third digit is more than 5 after the decimal in the second number 1 is added so it will be 2.90)

Answer:

the question can be understand but the question is not telling what to find

it is comfugen to answe're the question

Answer:

Step-by-step explanation:

x 1= 3 x 2=−4

Answer:

5 meters per second.

Step-by-step explanation:

There are 60 seconds in 1 minute:

1 minute 20 seconds = 60 seconds + 20 seconds = 80 seconds.

Divide the amount of meters swam (400) with the total amount of seconds used (80) to get the average meters per second:

(400 meters)/(80 seconds) = 5 meters/second.

5 is your answer.

~

Answer:

5 MPS

Step-by-step explanation:

If Ciera can swin 400 meters in 1 minute and 20 seconds,

400 meters = 1 minute 20 seconds (1 1/3 minutes).

Divide both sides by 1 1/3.

400/ 1 1/3 = 300

Since it asks in seconds, divide by 60.

300/60=5

Answer: 112 feet

Step-by-step explanation:

Answer:

Account A: Decreasing at 8 % per year

Account B: Decreasing at 10.00 % per year

Account B shows the greater percentage change

Step-by-step explanation:

Part A: Percent change from exponential formula

f(x) = 9628(0.92)ˣ

The general formula for an exponential function is

y = ab^x, where

b = the base of the exponential function.

if b < 1, we have an exponential decay function.

ƒ(x) decreases as x increases.

Account A is decreasing each year.

We can rewrite the formula for an exponential decay function as:

y = a(1 – b)ˣ, where

1 – b = the decay factor

b = the percent change in decimal form

If we compare the two formulas, we find

0.92 = 1 - b

b = 1 - 0.92 = 0.08 = 8 %

The account is decreasing at an annual rate of 8 %.The account is decreasing at an annual rate of 10.00 %.

Account B recorded a greater percentage change in the amount of money over the previous year.

Answer: The answer would be 4.9 :)

Step-by-step explanation:P=24.5cm

P=5a=5·4.9=24.5cm

=4.9

Answer:

C is the answer, as wind turbines are more expensive

Answer:

.......C........

Step-by-step explanation:

......

CosФ=24/25

Sin Ф=7/25 CoseceФ=25/7

TanФ=7/24 cotФ=24/7

SecФ=25/24

Answer:

61 cm or 0.61 m

Step-by-step explanation:

1. One meter is 100 cm, so you multiply 1.7 meters by 100 to get 170 cm.

2. Now that they are in the same units, to get their difference in height, you subtract Sheila's height from her son's (170 - 109) and get 61 cm.

3. Convert it back to meters by dividing by 100 and you get their difference in height in meters, 0.61 m.

Answer:

0.61

Step-by-step explanation:

One cenimeter is equivalent to 0.01 meter.

109cm • 0.01 = 1.09m

1.7m - 1.09m = 0.61m

Sheila is 0.61m taller than her son

Answer:

3 is correct answer

Step-by-step explanation:

root 2 and pi are irrational numbers

The perimeter of the woods is 26 miles if each grid represents one mile in the figure.

It is defined as the space occupied by the rectangle which is planner 2-dimensional geometry.

The formula for finding the area of a rectangle is given by:

Area of rectangle = length × width

We know the perimeter of the rectangle = 2(length + width)

As we can see closely in the figure the perimeter of the wood is actually a perimeter of a rectangle if we shift vertical and horizontal lines to make it a complete rectangle.

Let's suppose each grid is expressing one mile.

So the length of the rectangle = 9 miles

The width of the rectangle = 4 miles

The perimeter of the woods  = 2(9+4) = 26 miles

Thus, the perimeter of the woods is 26 miles if each grid represents one mile in the figure.

Learn more about the rectangle here:

https://brainly.com/question/15019502

#SPJ1

Answer:

1 - 60

2 - 120

3 - 60

4 - 120

5 - 60

6 - 120

7 - 60

8 - 120

Step-by-step explanation:

Via supplementary angles, you can conclude that angle 5 is 60. Because of vertical angles, angle 8 is 120 and angle 7 is 60. Because of alternate exterior angles, angle 1 is congruent to angle 7 and angle 2 is congruent to angle 8, meaning angle 1 is 60 and angle 2 is 120. Because of vertical angles, angle 3 is 60 and angle 4 is 120.

Answer:

8x^{12}yx^{3}  

Step-by-step explanation:

Simplify the expression.

Hopefully this helps you

- Matthew

Answer:

Probably 128 km/h, but maybe 98.5 km/h. See below.

Step-by-step explanation:

What does "at the same time" mean?

If it means that he covered the 240 km in the same time as he convered the 80 km, then this is how you solve it:

80 km in 1.25 hour

240 km in 1.25 hour

Total distance: 80 km + 240 km = 320 km

Total time: 1.25 hour + 1.25 hour = 2.5 hour

average speed = (total distance)/(total time) = 320 km / 2.5 hour = 128 km/h

If it means he covered the 240 km in the same time he covered the 80 km plus the rest, then this is how you solve it:

80 km in 1.25 hour

240 km in 1.25 hour + 45 min = 240 km in 1.25 houir + 0.75 hour = 240 km in 2 hour

Total distance: 80 km + 240 km = 320 km

Total time: 1.25 hour + 2 hour = 3.25 hour

average speed = (total distance)/(total time) = 320 km / 3.25 hour = 98.5 km/h

1. Round to the nearest whole dollar and add: 17 + 29 = $46

Estimated he spent about $46

2. subtract the two amounts from 50:

50-16.75 - 28.92 = $4.33 change back

Answer:

In other words, the only numbers you can plug into a log function are positive numbers. Negative numbers, and the number 0

Step-by-step explanation:

Answer: negative numbers and the number 0 are non logarithmic functions

Step-by-step explanation:

Answer:

35 cm^2

Step-by-step explanation:

First find the area of a square by multiplying its side lengths together: 5 * 5 = 25 cm^2.

Now find the area of the triangle by multiplying the base by the height and dividing by 2: 4 * 5 / 2 = 10 cm^2.

Therefore the total area of the figure is 25 + 10 = 35 cm^2.

Answer:

16 percent

Step-by-step explanation: 16 percent of 46500 is 7440

The answer is [tex] {2}^{5} [/tex] or 32.

The best way to represent this is with a binary tree. Each split represents a choice, and each line represents a possible outcome. Choice #1 at the top of the tree has 2 possible outcomes. The second level repeats that process with 2 possible choices and 4 possible outcomes, this repeats for all 5 levels giving us 32 possible outcomes at the bottom.

There will be eight outcomes.

Sample space : {HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}

Answer:

1/16

Step-by-step explanation:

In the starting, Corrine had 1/4 gallon of blackberries. Now, she poured the berries equally into 4 containers. Therefore, the amount of berries in each container is:1/4 : 4=1/16​

Thus, each container has 1/16 of a gallon of blackberries.

Answer:

1/16 th of a gallon in each container.

Step-by-step explanation:

That would be 1/4 divided by 4.

1/4 / 4

= 1/4 * 1/4

= 1/16.