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belka [17]
3 years ago
10

Question 9 (1 point)

Mathematics
1 answer:
Luden [163]3 years ago
8 0

Answer:

7

Step-by-step explanation:

16x-80+18=4x+22

16x-62=4x+22

12x-62=22

12x=84

x=7

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how many ounces of a 24% alcohol solution and a 29% alcohol solution must be combined to obtain 90 ounces of a 25% solution
atroni [7]

Answer:

agregar 14 o

Step-by-step explanation:

8 0
3 years ago
£440 is divided between David, Mark & Henry so that David gets twice as much as Mark, and Mark gets three times as much as H
Lesechka [4]

Mark received £ 132

<em><u>Solution:</u></em>

Given that £440 is divided between David, Mark & Henry

Let "d" be the share of david

Let "m" be the share of mark

Let "h" be the share of henry

Total amount is 440

Therefore,

share of david + share of mark + share of henry = 440

d + m + h = 440 ------- eqn 1

<em><u>David gets twice as much as Mark</u></em>

d = 2m ----- eqn 2

<em><u>Mark gets three times as much as Henry</u></em>

m = 3h

h = \frac{m}{3}  ------ eqn 3

<em><u>Substitute eqn 2 and eqn 3 in eqn 1</u></em>

2m + m + \frac{m}{3} = 440\\\\\frac{6m + 3m + m}{3} = 440\\\\10m = 1320\\\\m = 132

Thus Mark received £ 132

8 0
3 years ago
Identify the degree of the polynomial 6xy2 − xy + 8 + 12y.
Troyanec [42]
6xy^2 - xy + 8 + 12y is a polynomial of degree 3
5 0
3 years ago
A manufacturer tests a certain number of the headsets that are produced each day. If 280 units of that model are tested, and the
Natali5045456 [20]

Answer: 1%

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What is the slope of (10,5) and (-2,-4)
postnew [5]
To find the slope, use the equation
m = (y2-y1)/(x2-x1)
Since we have 2 coordinates, we can use the formula.
m = (-4-5)/(-2-10) = (-9)/(-12) = 3/4. The slope is 3/4. Hope this helps.
3 0
2 years ago
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