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emmasim [6.3K]
3 years ago
10

-3 / 4 + (-2 / 7) - (- 5 ½)

Mathematics
2 answers:
Igoryamba3 years ago
6 0
Answer:
125/28
4.46428571
4 13/28
There all right
Pls mark me brainliest
kotegsom [21]3 years ago
5 0

-6.535

I am learning this too! I hope this answer helps you.

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Using (x + a) (x + b) = x² + (a + b) x + ab, evaluate 75 x 77
Gre4nikov [31]

(x + a) (x + b) = x² + (a + b) x + ab

75 * 77=

=(70+5)(70+7)

=70²+(5+7)*70+5*7

=4900+12*70+35

=4900+840+35

=5775

4 0
3 years ago
I need the answer to this fast<br> Please
jeyben [28]
The initial function is slope

=> slope = 7-1/6-0 = 6/6 = 1

Hope this helps you :)
5 0
2 years ago
A wildlife photographer photographs a crocodile and then paddles against a river current for 6 km. Then, hoping to photograph a
Angelina_Jolie [31]

Answer:

5 or 6

Step-by-step explanation:

So I did it in a different way than shown in rsm classes. I said that the speed was x-2 and x.

then I said the distance was 6 and 15. If the time taken was 1 hour more, then we can come up with this equation:

Since the time is 6/x-2 or 15/x

15/x-6/x-2=1

multiply everything to get a common denominator then cancel it out to get

(15x-30)-6x=x^2-2x

11x-30=x^2

x^2-11x+30=0

(x-5)(x-6) is factored form.

so x=5 or x=6. this means that the speed of the boat is either 5km/h or 6 km/h

6 0
2 years ago
Can someone please help me with this geometry please?
Crank

Answer:

<u>5x+13</u> ÷ 36 = 6x-2 ÷ 30

5x+13 ÷ 6 = 6x-2 ÷ 5

25x+65=36x-12

11x=77 → x=7

<u />

Step-by-step explanation:

5 0
3 years ago
I bed help with these two
frozen [14]
Well if each band needs 15.5 inches and she needs to make 12 headbands she needs 15.5 inches 12 times. Now you can add 15.5 + 15.5 +15.5 (so on) 12 times or you can do it the easier way and do 15.5 times 12. this comes out to 186 inches of ribbon. She estimated 160 inches of ribbon, this is unreasonable because it is significantly less that 186. 
5 0
3 years ago
Read 2 more answers
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