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4 years ago

4 math problem

Mathematics

2 answers:

Aneli [31]4 years ago

6 0

Answer:

Step-by-step explanation:

1)y=-6x-14 ---------(i)

-x-3y=-9 ---------- (ii)

Substitution method:

Substitute y value in equ (i)

-x -3*(-6x-14) = -9

-x - 3*-6x -3*(-14)= -9

-x + 18x + 42 = -9

17x = -9 -42

17x = -51

x = -51/17

x = -3

Substitute x value in equation (i)

y = -6*-3 -14

y =18-14

y = 4

TEA [102]4 years ago

3 0

Step-by-step explanation:

I'm using substitute in the first and something I don't know the name of in the rest.

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Can someone please help me please I really need help please answer it correctly

kvv77 [185]

Answer:

<h3>Princeton Florist</h3>

Let the total charge is y, the number of small arrangements is x.

Total charge will be:

y = 13x + 47

<h3>Chad's Flowers</h3>

Total charge will be:

y = 17x + 35

Since the total charge is same in both shops, we have:

13x + 47 = 17x + 35

Solve for x:

17x - 13x = 47 - 35
4x = 12
x = 3

Total cost is:

13*3 + 47 = 39 + 47 = 86

Small arrangements = 3, cost = $86

7 0

3 years ago

A recursion formula and the initial term of a sequence are given. Write out the first five terms of the sequence. a Subscript fo

Lelu [443]

Answer:

6, -6, 6, -6 and 6.

Step-by-step explanation:

Given the recursion formula for a sequence

$a_{n+1}=-a_n\\$where a_1=6\\$

The first five terms of the sequence are:

$\text{First Term, }a_1=6\\$Second Term, a_2=a_{1+1}=-a_1=-6\\$Third term, a_3=a_{2+1}=-a_2=6\\$Fourth term, a_4=a_{3+1}=-a_3=-6\\$Fifth term, a_5=a_{4+1}=-a_4=6$

Therefore, the first five terms of the sequence:

$a_1,a_2,a_3,a_4,a_5=6, -6, 6, -6$ and 6.$

4 0

3 years ago

In ΔEFG, f = 42 inches, e = 39 inches and ∠E=43°. Find all possible values of ∠F, to the nearest degree.\

zavuch27 [327]

Answer:

The angle F = 47.25°

Step-by-step explanation:

Step(i):-

Given that f =42inches and e = 39 inches

Given that ∠E = 43°

By using sine rule

$\frac{a}{sinA} = \frac{b}{sinB} = \frac{C}{sinC} = 2R$

$\frac{e}{sinE} = \frac{f}{sinF}$

⇒ $\frac{39}{sin43} = \frac{42}{sinF}$

Cross multiplication , we get

⇒ 39 sin F = 42 × sin 43°

$sin F = \frac{42 X 0.68199}{39}$

⇒ sin F = 0.734459

Step(ii):-

⇒ sin⁻¹ (sin F)= sin ⁻¹ ( 0.734459)

⇒ F = 47.25

The angle F = 47.25°

7 0

3 years ago

A line parallel to y=2x-4

Dominik [7]

Answer:

Step-by-step explanation:

bc it is on the x and y axis

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3 years ago

7/10 × 4/21. Show your work

wolverine [178]

Answer:

Step-by-step explanation:

7/10 × 4/21

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reduce them down

6 0

3 years ago