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GrogVix [38]
3 years ago
11

What is the sum?? need help

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
43+35=78 the answer is 78
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(x+7)^2+9=0<br><br> Find x with quadratics
Ne4ueva [31]

Answer:

x = -7 ±3i

Step-by-step explanation:

(x+7)^2+9=0

Subtract 9 from each side

(x+7)^2+9-9=0-9

(x+7)^2=-9

Take the square root of each side

sqrt((x+7)^2) = ±sqrt(-9)

We know sqrt(ab) = sqrt(a) sqrt(b)

x+7 = ±sqrt(-1) sqrt(9)

We know that sqrt(-1) is the imaginary number i

x+7 = ±i *3

x+7 =±3i

Subtract 7 from each side

x+7-7 = -7 ±3i

x = -7 ±3i

6 0
3 years ago
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vlad a economiit o suma de bani.A cheltuit 20 lei pentru felicitari apoi tatal i-a dublat suma. A cheltuit 40 lei pe martioare a
timurjin [86]

He had saved 320 initially

Step-by-step explanation:

Let the amount he saved be 'a'

Amount spent = 20 + 40 + 30

= 90

His grand father gave 50

At the end he has 280

280 = a - 90 +50

a = 280 -50 +90

= 320

He had saved 320 initially

7 0
3 years ago
Please help will mark brainliest!
dmitriy555 [2]

2x - 3y = - 2

3x - 2y = 12

the value of X in the solution to the system is 4.

6 0
3 years ago
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Find the radius of the circle which has the same area
Neko [114]

Answer:

13 cm

Step-by-step explanation:

We can get the answer in the following way:

4 0
3 years ago
Macey wants to plant 96 potatoes in her garden. She wants each row to have the same number of potatoes. What is one possible way
arlik [135]

Answer:

Macey could make 16 rows in her garden.

Step-by-step explanation:

96/16=6

So she can have 16 rows with 6 potatoes

7 0
2 years ago
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