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uranmaximum [27]
3 years ago
15

What times what equals 4

Mathematics
2 answers:
LenKa [72]3 years ago
6 0
2x2=4
4x1=4
Those are all the problems that equal 4
ElenaW [278]3 years ago
3 0
A number times 1 always equals itself, so: 4×1 = 4, OR 2×2 = 4
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PLEASE I NEED HELP!!!!!!!!
Yanka [14]

Answer:

1) x= 3i, x= - 3i

2) x= +i\sqrt{7}, x = - i

Step-by-step explanation:

1) x^2+9=0

(x+3i)(x-3i)=0

x= 3i, x=-3i

2) x^2-4=-11

x^2=-7

x= ±i\sqrt{7}

x= +i\sqrt{7}, x = - i

hope this helps!! :))

7 0
3 years ago
Two mechanics work on a car . The first mechanic worked 10 hours and the second mechanic worked for 15 hours. Together they char
bonufazy [111]

Answer:

110

Step-by-step explanation:

Let x = rate #1 and then 155-x=rate #2.

15x + 5(155-x) = 1225

15x - 5x + 775 - 1225

10x = 450

x = 45, second rate is 110

8 0
3 years ago
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HELP! Please I’ll give Brainlist
Mekhanik [1.2K]
I think you forgot to attach the image :(
7 0
3 years ago
Read 2 more answers
Will mark brainliest!!<br><br> picture included ^^^^<br><br> please and THANK YOU<br><br><br> ^^!!
Alisiya [41]

Answer:

shift the graph up 1 unit

Step-by-step explanation:

d is the vertical shift

+1 means we shift the graph up 1 unit

5 0
3 years ago
The measures of the angles of a triangle are in a ratio of 7:9:10. Find the measures of the angles of the triangle
Brut [27]
So all the angles in total are going to be 180 degrees.
7+9+10 = 18 (parts at all)
180/18=10 (1 part of the ratio)
Than to find all of the angles we multiply 1 part by 7, 9 and 10 separately
10*7= 70 degrees (1st angle)
10*9=90 degrees (2nd angle)
10*10=100 degrees (3rd angle)
Answer: 70, 90, 100
6 0
2 years ago
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