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BlackZzzverrR [31]
3 years ago
15

Which choice correctly shows the solution(s) of the equation x2 = 225?

Mathematics
1 answer:
prisoha [69]3 years ago
7 0

Answer:

C)x = +/-15

Step-by-step explanation:

15x15=225

-15x-15=225

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Two containers, A and B begin with equal volumes of liquid.
Reika [66]

Answer:

volume left in A is 80ml

Step-by-step explanation:

let original volume in both be x ml

after pouring from A to B

vol in A = x - 120

vol in B = x + 120

now it is given that

vol in B = 4 times vol in A

implies

x + 120 = 4 \times (x - 120) \\ x + 120 = 4x - 480 \\ 3x = 600 \\ x = 200

hence original volume in A is 200ml. after pouring in B it is 200-120 = 80 ml

8 0
2 years ago
Erika worked 14 hours last week and 20 hours this week. If she earns $9 per hour, how much did she earn during these two weeks
IrinaK [193]
$9 per hour for 14 hours the first week can be found by doing 9 • 14, which equals 126.
In the first week, Erika earned $126.
$9 per hour for 20 hours for the second week can be found by doing 9 • 20, which equals 180.
In the second week, Erika earned $180.
To find the total amount Erika earned in both weeks, add how much she made in week 1 to how much she made in week 2.
126 + 180 = 306
Erika made $306 during these 2 weeks.
6 0
3 years ago
_________ is the ratio of the vertical change to the horizontal change between any two points on a line.
leva [86]
Rate of change or slope. Hope it helps. 
4 0
3 years ago
Select the correct answer. Write (21 − 4i) − (16 + 7i) + 28i as a complex number in standard form. A. 5 + 39i B. 5 + 17i C. 5 −
Anastasy [175]

Answer:

<em>b. 5 + 17i</em>

Step-by-step explanation:

8 0
3 years ago
Page !
ANTONII [103]

Answer:

19 orders of tea

57 orders of collee

Step-by-step explanation:

find 1/4 of the 76

76/4=19

multiply by 3

19x3=57

8 0
3 years ago
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