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stira [4]
3 years ago
15

(x + 9) (x + 1) Use the FOIL method, then Explain

Mathematics
1 answer:
viva [34]3 years ago
5 0

Answer:

xˆ2+10x+9

Step-by-step explanation:

first, multiply x by x and by 1, that would be (xˆ2 and x), then multiply 9 by x and 1, that would be( 9x and 9), add the two parenthesis, and it totals out to xˆ2+10x+9

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If the pressure in the tank is 1.5 bar and atmospheric pressure is 1 bar, determine l, in m, for water with a density of 997
il63 [147K]

this can be solve using the formulaP = rghwhere P is the total pressurer is the densityh is the heightg is the acceleration due to gravity
fist solve the total pressureP = 1.5 bar + 1 barP = 2.5 barP = 250,000 Pa
P = rgh250,000 = (997)(9.81)hh =25.56 m 
6 0
4 years ago
Jack and Jill start driving from the same location. Jack drives 30 miles south while Jill drives west. If Jack and Jill are 78 m
arsen [322]

Answer:

72 mles

Step-by-step explanation:

For better understanding, I'll make use of an attachment.

From the attachment,

O represents the start point

OB = 30 --- Jack

AB = 78 -- Distance between them

Required

Find OA; Jack's distance

To do this, we make use of Pythagoras theorem

AB^2 = OA^2 + OB^2

This gives:

78^2 = OA^2 + 30^2

6084 = OA^2 + 900

Subtract 900 from both sides

OA^2=  6084 - 900

OA^2=  5184

Take square roots

OA = \sqrt{5184}

OA = 72

<em>Hence, Jill drove 72 miles</em>

5 0
3 years ago
Xét tính đồng biến nghịch biến của hàm số:<br><br>y=-x^4-2x^2+5
lana66690 [7]

Answer:

x=77

Step-by-step explanation:

5 0
3 years ago
Factor the trinomial and enter the factorization below. Write each factor as a
asambeis [7]

Answer:

(X+10)(X-3)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A flipped coin landing heads up and rolling a 5 or 6 on a number cube
Vladimir [108]
The probability would be 1/6 if the number cube is six-sided and the coin is normal.

First, we will find the probability of the landing on heads with the coin.This would be 1/2 because you have two sides that it could land on and one side you want it to land on.

Next, we will find the probability of getting a five or six with a number cube. This would be 2/6 or 1/3 because there are 6 sides it could land on and two with one of the numbers you want. 

Finally, you multiply the two probabilities. 1/3 times 1/2 equals 1/6.

Hope this helps! Have a great day!
8 0
3 years ago
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