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Westkost [7]
3 years ago
7

Only do 7. iiiI will mark you as brainliest.. I don't have time please fasttt​

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Answer:

Check my explanation

Step-by-step explanation:

(i) the area of the floor is 30m² (6m · 5m)

(ii) the perimeter of the floor is 22m (6m + 5m + 6m + 5m)

(iii) the area of the walls is:

     24m² (for the 6m by 4m walls)

     20m² (for the 5m by 4m walls)

     88m² in total total

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-7 \times (7 + 9)−7×(7+9)
prisoha [69]

Answer:

−224

Step-by-step explanation:

−7(7+9)−7(7+9)

=(−7)(16)−7(7+9)

=−112−7(7+9)

=−112−(7)(16)

=−112−112

=−224

8 0
2 years ago
Solve for x.<br> 40 = 8(x - 10)
Aleksandr [31]

Answer:

x = 15

Step-by-step explanation:

hope this helps, have a great day/night!!

5 0
2 years ago
Read 2 more answers
Which one of the following is not a integer<br><br> A-5<br> B.-3<br> C-1/2<br> D-10
Karolina [17]
-1/2 is not a integer
4 0
3 years ago
Read 2 more answers
What is 15% of $32.50 and please explain how you got your answer please
Ann [662]
You can say : 15% ⇒ ? if 100% ⇒ 32.50 $ 
so next you can say : 15/100 = ?/32.50 ⇒ ? = (15/100) × 32.50 = 15 × 32.50 ÷ 100 = 4.875 ⇒ so the answer is 4.785 $ ;D i hope this will be helpful :))
3 0
3 years ago
Read 2 more answers
Please help please please
Marina CMI [18]

Answer:

C. y = 2x + 8

Step-by-step explanation:

✔️First, find the slope of the line that goes through points (-2, 4) and (6, 20):

Slope (m) = ∆y/∆x = (20 - 4) / (6 - (-2))

Slope (m) = 16/8

m = 2

✔️Find the y-intercept (b):

To do this, substitute (x, y) = (6, 20) and m = 2 into y = mx + b

Thus:

20 = 2(6) + b

20 = 12 + b

20 - 12 = b

8 = b

b = 8

✔️Write the equation by substituting m = 2 and b = 8 into y = mx + b

Thus:

y = 2x + 8

8 0
2 years ago
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