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zhuklara [117]
3 years ago
7

Help ,I don't understand

Mathematics
1 answer:
cupoosta [38]3 years ago
8 0
This is the correct answer hope this helps btw it is the 2nd one

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9+n=-2<br> how do i find the unknown exponent n?
slega [8]
9 + n = -2
-9 -9 Get rid of 9 from both sides

n = -2 - 9

n = -11
7 0
2 years ago
Show that x + y : x - y= 3 : 2
insens350 [35]

Answer:

x + y : x - y = (5/2+1/2) : (5/2-1/2)

x + y : x - y = 3 : 2

Therefore,  x + y : x - y= 3 : 2 is proved.

Step-by-step explanation:

Given

x + y : x - y = 3 : 2

As

x + y = 3

x - y = 2

Solving to find x and y

\begin{bmatrix}x+y=3\\ x-y=2\end{bmatrix}

x-y=2

-

\underline{x+y=3}

-2y=-1

\begin{bmatrix}x+y=3\\ -2y=-1\end{bmatrix}

solve for y

-2y=-1

Divide both sides by 2

\frac{-2y}{-2}=\frac{-1}{-2}

y=\frac{1}{2}

\mathrm{For\:}x+y=3\mathrm{\:plug\:in\:}y=\frac{1}{2}

x+\frac{1}{2}=3

x+\frac{1}{2}-\frac{1}{2}=3-\frac{1}{2}

x=\frac{5}{2}

so

x=\frac{5}{2},\:y=\frac{1}{2}

Thus,

x + y : x - y = (5/2+1/2) : (5/2-1/2)

x + y : x - y = 3 : 2

Therefore,  x + y : x - y= 3 : 2 is proved.

7 0
3 years ago
Three salesmen work for the same company, selling the same product. And, although they are all paid on a weekly basis, each sale
kirill [66]

If we take the paycheck amount of $1020 and subtract it by the weekly salary of $300.

$1020 - $300 = $720

We get $720 in sale commissions. So to get the number of sales, you divide the $720 by the $40 per sale commission.

$720/$40 = 18

Therefore, the sales Salesman B has for the week is 18.

3 0
3 years ago
Read 2 more answers
Solve 5x-8y=19 for y.
Setler [38]

Answer:

-19/8+5x/8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
1. Find the volume of a rectangular block 15 cm long, 5 cm wide and 10 cm length​
xxMikexx [17]

9514 1404 393

Answer:

  750 cm³

Step-by-step explanation:

The volume is given by the formula ...

  V = LWH . . . . where L, W, H represent length, width, height

The volume is the product of the dimensions.

  V = (15 cm)(5 cm)(10 cm) = 750 cm³

7 0
2 years ago
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