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almond37 [142]
3 years ago
15

Help with question 2

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
7 0
It's a parallelogram, so the area is just:
A_p = bh

We are given both quantities, so just plug and chug:
A_p = 12*11 = 132in^2

The area of this parallelogram is 132in².
ANTONII [103]3 years ago
5 0
The area can be found by multiplying the two together. 11x12=132. 

The area is 132.
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Alejandro was asked to solve a system of linear equations by using the substitution method. What is the error in his work below?
JulsSmile [24]
Step 1:
4y + x = 15
−9x + 5y = 20

Step 2: correct
4y + x = 15
x = 15 − 4y

Step 3: wrong
4y + x = 15
4y + (15 − 4y) = 15 wrong step
4y + 15 − 4y = 15
15 = 15
***once you have solved for a variable in one equation, you substitute it in the other equation

Corrected Step 3:
−9x + 5y = 20
-9(15 - 4y) + 5y= 20
(-9*15) + (-9*-4y) + 5y= 20
-135 + 36y + 5y= 20
-135 + 41y= 20
add 135 to both sides
41y= 155
divide both sides by 41
y= 155/41 or 3 32/41 or 3.78


ANSWER: The x value in step 2 should have been substituted in the opposite equation in step 3. The y solution would then be 155/41 or 3 32/41 or 3.78

Hope this helps! :) Would love to be marked brainliest.
3 0
3 years ago
Read 2 more answers
A hotel charges $225 per night to rent a suite. The hotel charges $75 per day for full room service . If Jessica and Ashley purc
Mrrafil [7]
A) 3
the reason is because $225 a night and $75 a day 75*2 is 175 so then you add 175+225 is 400 multiple it by 3 your answer is $1200 enjoy your answer
4 0
2 years ago
The value of a in the equation ax + y = 5 , if x = 2 and y = 3 is a) – 1 b) 0 c) 1
sasho [114]

Answer:

c) 1

Step-by-step explanation:

=> ax+y = 5

<u><em>Putting x =2, y =3</em></u>

=> a(2)+3 = 5

=> 2a = 5-3

=> 2a = 2

<em>Dividing both sides by 2</em>

=> a = 1

3 0
3 years ago
Read 2 more answers
X/a+x/b=1<br>make x the subject of the formular​
monitta

Answer:

x = \frac{ab}{b+a}

Step-by-step explanation:

Given

\frac{x}{a} + \frac{x}{b} = 1

Multiply through by ab to clear the fractions

bx + ax = ab ← factor out x from each term on the left side

x(b + a) = ab ← divide both sides by (b + a)

x = \frac{ab}{b+a}

8 0
3 years ago
What is the value of u + v + w when u = –10, v = 4, and w = 8?
Y_Kistochka [10]
The answer is b. 2. It is 2, because -10 plus 4 is -6. Then -6 plus 8 is 2.
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