Ineed the answers because i honestly don’t know the answers . coordinate algebra is very hard and i need !

answer:

58, 37, 9

step-by-step explanation:

given:

first term a₁ = 65 and common difference d = - 7

this sequence is arithmetic series and formula for calculating n-th term is:

aₙ = a₁ + (n-1) d

accordingly

the second term is:

a₂ = 65 + (2-1) (-7) = 65 - 7 = 58

a₂ = 58

the fifth term is:

a₅ = 65 + (5 - 1) (-7)   = 65 + 4 · (-7) = 65 - 28 = 37

a₅ = 37

the ninth term is:

a₉ = 65 + (9 - 1) (-7) = 65 + 8 · (-7) = 65 - 56 = 9

a₉ = 9

god with !

answer:

a) 100 + 15x

b) $400

step-by-step explanation:

to find out the equation for the first part, we know that the cost of the banquet room for an event is $100. to add, for each guest (x), we add another $15, which means you have to multiply the price of each guest with the number of guests (x)

to find out part (b), you have to substitute x as 20 in the equation and you shall arrive at the answer of $400

answer:

d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.

step-by-step explanation:

the hypotenuse   leg theorem states that if the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle, then the triangles are congruent.   the hypotenuse is ac for both triangles so it is the same.   we are given ab = cd   so acd is congruent to cab

answer:

(2x + 10)° plus (8x + 10)° = 180

10x + 20° = 180

10x = 160

x = 16

the larger angle is (8x + 10)°  

when we substitute x = 16 we get:

138°

answer is d

step-by-step explanation: