All categories

3 years ago

Help please..... 11 pointsssss

Mathematics

2 answers:

julsineya [31]3 years ago

8 0

X= -213/10 , look at the steps in the picture

kozerog [31]3 years ago

4 0

Multiply both sides by 2.4

5.7+x=-15.6

next subtract 5.7

x=-21.3

I'm pretty sure I did that right

You might be interested in

Y-3=-3y-43 solve the equation

Sonja [21]

Y-3=-3y-43
4y-3=-43
4y=-46
y=-11.5

8 0

3 years ago

Read 2 more answers

Factors of 30 add up to 9. what are they?

Daniel [21]

1,2,3,5,6,10,15,30

think that's right, hope this helps!

8 0

3 years ago

Read 2 more answers

3x^2y^3(2x-xy^2) what does this equal? when i use ^ the number after is an exponent

Luda [366]

I will edit this after i calculat the answer just give me time

3 0

4 years ago

8*{[7+4)*2-[(11-7)*4]}

Rzqust [24]

Answer:

(8 (-1))

Step-by-step explanation:

Simplify the following:

8 (7 + 4×2 - 4 (11 - 7))

11 - 7 = 4:

8 (7 + 4×2 - 44)

4×2 = 8:

8 (7 + 8 - 4×4)

-4×4 = -16:

8 (7 + 8 + -16)

7 + 8 = 15:

8 (15 - 16)

15 - 16 = -(16 - 15):

8 (-(16 - 15))

| 1 | 6

- | 1 | 5

| 0 | 1:

8 (-1)

8 (-1) = (8 (-1)):

Answer: (8 (-1))

8 0

3 years ago

How many oz of walnuts which cost $6/oz must be added to 2 oz of peanuts which cost $12/oz to make mixed nuts which cost $8/oz

Burka [1]

Answer: 4 oz

Step-by-step explanation:

Create a table. Multiply across and add down (the middle column cannot be added). The Mixture line creates the equation that must be solved.

Let x represent the unknown quantity of walnuts.

$\begin{array}{c|c|c||c}&\underline{Quantity}&\underline{Cost}&\underline{Qty \times Cost}\\Walnuts&x&6&6x\\\underline{Peanuts}&\underline{\qquad 2\qquad}&\underline{\qquad 12\qquad}&\underline{\qquad 24\qquad }\\Mixture&x+2&8&6x+24\end{array}$

$.\qquad \qquad \qquad \qquad (x+2)(8) = 6x+24\\.\qquad \qquad \qquad \qquad 8x + 16 = 6x + 24\longrightarrow \text{distributed}\\.\qquad \qquad \qquad \qquad2x+16=24\qquad \longrightarrow \text{subtracted 6x}\\.\qquad \qquad \qquad \qquad 2x=8\qquad \qquad \ \longrightarrow \text{subtracted 16}\\.\qquad \qquad \qquad \qquad x=4\qquad \qquad \quad \longrightarrow \text{divided by 2}$

4 0

3 years ago