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astra-53 [7]
3 years ago
13

PLEASE I NEED HELP ILL MARK BRAINLIEST THESES NEED TO BE DONE BY 10 in the Morning plss help

Mathematics
1 answer:
nordsb [41]3 years ago
6 0
B

The side across is equal
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(2y-2)÷x evaluate x=3 and y=4​
Ratling [72]

Answer:

= 2

Step-by-step explanation:

Step 1- Substitute the variables

(2(4)-2)÷3

Step 2- Multiply

(2(4)-2)÷3

Step 3- Subtract

(8-2)÷3

Step 4- Divide

6÷3=2

7 0
3 years ago
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zepelin [54]

Answer:

35 i<em>s answer please tell me if i am right </em>

Step-by-step explanation:

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3 years ago
The formula sa
sergeinik [125]

Answer:

The correct option is (b).

Step-by-step explanation:

The formula for the side of a cube of surface area SA is as follows :

s=\sqrt{\dfrac{SA}{6}}

When SA = 180 m²

s=\sqrt{\dfrac{180}{6}}\\\\s=\sqrt{30}

When SA = 120 m²

s=\sqrt{\dfrac{120}{6}}\\\\s=\sqrt{20}\\\\=2\sqrt5

Difference,

=30-2\sqrt5

So, the correct option is (b).

8 0
3 years ago
Prove that there exists a unique real number solution to the equation x3 + x2 − 1 = 0 between x = 2/3 and x=1
ziro4ka [17]
Replace each of the x values given to see if they give 0. 

0=(2/3)³+(2/3)²-1 
0=(8/27)+(4/9)-1 
0≠-0.259

0=(1)³+(1)²-1 
0≠1

Therefore, you can see that the solution would have to be between 2/3 and 1.

Hope I helped :) 
7 0
4 years ago
Sarah has 13 stickers. Sissy has 28 stickers. Sissy divides her stickers into 4 equal groups.
777dan777 [17]

Answer:

She gave 7 stickers.13+7=20.sarah has 20 stickers

Step-by-step explanation:

Divide 28 by 4

7 0
2 years ago
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