Find a and b in the picture plzzzz
2 answers:
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Answer: 10 units²
Step-by-step explanation:
We can divide the shape along the y-axis to get 2 separate triangles. If we find the area of each and add them up, we can get the total area of the figure.
We can get each triangle's area using the formula
base length - 4 units
height - 4 units
base length - 2 units
height - 2 units
Total = 8 units² + 2 units² = 10 units²
Question 1:
<span>5z – 9 = 36
5z = 45
z = </span>
z = 9
Hence, the answer is D.
Question 2:
<span>5(2z + 4) = 0
</span><span>
10z + 20 = 0
10z = -20
z = </span>
<span>
z = -2
Hence, the answer is A.
Question 3:
4a + 3(a + 1) = 24
4a + 3a + 3 = 24
7a = 21
a = </span>
a = 3
Hence, the answer is B.
Question 4:
<span>3(4x + 5) = 12
12x + 15 = 12
12x = 12 - 15
12x = -3
x = </span>
Hence, the answer is A.
Question 5:
<span>4x – 8 – 4x = 9
-8 </span>≠ 9
Hence, the answer is A.
<span>5z – 9 = 36
5z = 45
z = </span>
z = 9
Hence, the answer is D.
Question 2:
<span>5(2z + 4) = 0
</span><span>
10z + 20 = 0
10z = -20
z = </span>
<span>
z = -2
Hence, the answer is A.
Question 3:
4a + 3(a + 1) = 24
4a + 3a + 3 = 24
7a = 21
a = </span>
a = 3
Hence, the answer is B.
Question 4:
<span>3(4x + 5) = 12
12x + 15 = 12
12x = 12 - 15
12x = -3
x = </span>
Hence, the answer is A.
Question 5:
<span>4x – 8 – 4x = 9
-8 </span>≠ 9
Hence, the answer is A.