I need help with this please

Answer:

170°

Step-by-step explanation:

Let a be the distance from Los Angeles to Chicago = 1744 miles, b be the distance from Chicago to New York = 714 miles and c be the distance from New York to Los Angeles = 2451 miles.

A is the angle opposite to side a, B is the angle opposite to side b and C is the angle opposite to side c.

Therefore the angle at Chicago is  C.

From cosine rule:

c² = a² + b² - 2ab × cos (C)

2ab × cos (C) = a² + b² - c²

cos (C) = (a² + b² - c²) / 2ab

Substituting:

cos (C) = (1744² + 714² - 2451²) / 2×1744×741

cos (C) = -0.986

C = cos⁻¹ (- 0.986) = 170°

Answer:

Step-by-step explanation:

Well, assuming that the cards are numbered 1, 2, 3, 4 and 5, then the probability of getting 6 is zero, because there's no card with such number.

Remember that a simple probability is a ratio between the possible events and the total number of outcomes. In this case, the total number of outcomes is 5 and the events are zero, because there's no card with 6.

Answer:

x=-10, -5, 5

Hope this helps

Answer:

its D x = –10, x = –5, or x = 5

Step-by-step explanation:

Answer:

2 solutions

Step-by-step explanation:

Well to find out how many solutions it has, you have to find the discriminant:

b^2 - 4ac

a = 2

b = 7

c = -3

Discriminant = 49 + 24 = 73

Discriminant is > 0 so there are 2 solutions

Answer:

2 solutions

Step-by-step explanation:

the quadratic would have 2 solutions .

Answer:

The angle is "27 and 63".

Step-by-step explanation:

Let A and B are two angles, in which  A is " [tex]\frac{1}{2}[/tex] " complementary angles  and B be is another complementary angle.

Condition of complementary angle :

[tex]A+B =90 ......(i)[/tex]

Solution:

[tex]\ A = \ 3B - 18 \\\\ \ put \ the \ value \ of \ A \ in \ equation.....(i) \\\\ \ Equation: \\ \\\Rightarrow \ A\ +\ B \ =\ 90 \\\\\Rightarrow \ 3B\ -\ 18 \ + \ B \ = \ 90 \\\\\Rightarrow \ 4B \ = \ 90 +18 \\\\\Rightarrow \ 4B = 108 \\\\ \Rightarrow B = \frac{108}{4} \\\\ \Rightarrow B \ = \ 27\\[/tex]

[tex]\ put \ the \ value \ of \ B \ in \ equation (i).\\\\ \ Equation: \\\\\Rightarrow A+B=90\\\\\Rightarrow A+27=90\\\\\Rightarrow A=90-27\\\\\Rightarrow A= 63[/tex]

The measure of DF​ is 100°.

Two triangles are congruent if they satisfy the 5 conditions of congruence. They are side-side-side (SSS), side-angle-side (SAS), angle-side-angle (ASA), angle-angle-side (AAS) and right angle-hypotenuse-side (RHS).

Congruence of triangles: Two triangles are said to be congruent if all three corresponding sides are equal and all the three corresponding angles are equal in measure.

Learn more about Congruence here: brainly.com/question/1675117

#SPJ2

Answer:

(x+3)(2x^2+5)

Step-by-step explanation:

Answer:

2x³ + 6x² + 5x + 15=(x+3)(2x²+5)

Step-by-step explanation:

2x³ + 6x² + 5x + 15=

=(2x³ + 5x) +(6x²+ 15)

=x(2x²+5)+3(2x²+5)

=(x+3)(2x²+5)

Answer:

5/49

Step-by-step explanation:

3/7 x 5/21=15/147=5/49

Answer:

5/49

Step-by-step explanation:

Step-by-step explanation:

6x + y = 4x + 11y

6x-4x=11y - y

-2x=10y

Answer = -2x=10y

Answer:

10.4

Step-by-step explanation:

If you add all of these up and divide by 5 you get 10.4 which is the average value.

Answer:

D

Step-by-step explanation:

(11+10+9+12+10)/5= 10.4

Answer:

f=3x-2

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

12 bikes

9 tricycles

Step-by-step explanation:

x+y=21

2x+3y=51

x=-y+21

2(-y+21)+3y=51

-2y+42+3y=51

y+42=51

y=9

x=12

Answer:

144

Step-by-step explanation:

................

Answer:

A. 144

Step-by-step explanation:

as the question says, the pattern is going by multiple of two. 9 * 2 is 18, 18 * 2 is 36, 36 * 2 is 72, 72 * 2 must be 144.

Answer:

**Look at the picture**

Answer:

[tex] = 9 {g}^{20} {p}^{16}

[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

Smart phone sales since 1990: exponential

Throwing a baseball in the air: quadratic

Population of a colony of feral cats: exponential

Grade on a test compared to hours of studying: linear

Half of a pesticide: exponential

Driving at a constant rate of speed: linear

Answer:

24

Step-by-step explanation:

I took the test

Answer:

Beki's jersey number is 34. She last 12 minutes

Nick's jersey number is 20. He last 10 minutes

Carmen's jersey number is 2. She last 14 minutes

Joey's jersey number is 13. He last 11 minutes

Step-by-step explanation:

• The sum of the digits on Beki's jersey number is 7. Therefore, Beki's number is necessarily 34 (3+4 = 7)

• Nick's jersey number is 18 greater than Carmen's. Therefore, Nick's jersey number is 20 and Carmen's jersey number is 2 (2 + 18 = 20). If Carmen's jersey number was 13, 13+18 = 31 which is not included in the options. If it was 20, 20+18 = 38 is not included either.

• From previous items, Joey's jersey number is 13

• The runner with the lowest jersey number also ran the slowest time. Therefore, Carmen last 14 minutes

• Nick finished exactly 2 minutes faster than Beki. Therefore, Nick's time is 10 minutes and Beki's time is 12 minutes, because from the remaining options (10, 11 and 12) this is the only combination 2 minutes apart.

• From previous items, Joey's time is 11 minutes

Answer:

The unknown side (x) is 11.9 ft.

Step-by-step explanation:

x= 34.6 - 5.2 - 11.1 - 6.4 = 11.9

x = 11.9

Answer:

x=11.9ft

Step-by-step explanation:

[tex]5.2ft + 6.4ft + 11.1ft + xft = 34.6ft \\ |the \:addition \: of \: all \: the \: length \:would \: give \: us \: the \: the \: perimeter \: 34.6ft | \\ \\ 22.7ft + xft = 34.6ft \\ |collect \: like \: terms| \\ xft = 34.6ft - 22.7ft \\ xft = 11.9ft |final \: answer| [/tex]

Answer:

(x−4)^2+(y−1)^2=25

Step-by-step explanation:

Answer:

24 cugini

Step-by-step explanation:

6x2=12

12x2=24

Answer:

4(x+3) -3 (x+2)

Step-by-step explanation: I hope that helps :)

Answer:

13 - 5x

Step-by-step explanation:

5-2(3x-4)+x

Final result:

 13 - 5x

Step by step solution:

Step 1:

Equation at the end of step 1:

(5 -  2 • (3x - 4)) +  x

Step  2:

Final result :

 13 - 5x

Answer:

2/12

Step-by-step explanation:

Answer:

The answer is irrational

Step-by-step explanation:

Answer:

500

Step-by-step explanation:

here

principal(p)=2500

rate (R)=5%

Time (T)=4 years

now,

Intrest (I)=(P×T×R)/100

(2500×5×4)/100

=Rs 500

After 4 years the investment of $2500 will be $3051.02.

Compound interest is the interest calculated on the principal and the interest accumulated over the previous period.

Compound interest is calculated by multiplying the initial principal amount (P) by one plus the annual interest rate (R) raised to the number of compound periods (nt) minus one. That means, CI = P[(1 + R)ⁿˣ – 1] Here,

P = Initial amount

R = Annual rate of interest as a percentage

n = Number of compounding periods in a given time

Given, 2500 dollars is invested at an interest rate of 5% compounded monthly.

From the above formula of compound interest

Total amount  A = P(1 + r/n)^nt

In our case

p = 2500

r = 5%

t = 4 years

Thus,

Total amount = 2500(1 + 5/12)^12 * 4

Total amount = 3051.02

therefore, this investment will be worth $3051.02 after 4 years.

Learn more about compounded interest here:

https://brainly.com/question/14295570

#SPJ1

Answer:

340 units^2

Step-by-step explanation:

B=(8)(5)=40

40*2=80

h=10 and P=2(5)+2(8)=10+16=26

80+(10)(26)=80+260=340

Therefore, 340 units^2

I hope this helped and have a good rest of your day!