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Kobotan [32]
3 years ago
14

Emily simplified this expression. Expression: (5−2)2+23×4 Step 1: (3)2+23×4 Step 2: 9+23×4 Step 3: 9+9×4 Step 4: 9+36 Step 5: 45

Emily made a mistake. Which step shows her first mistake? Step 1 Step 2 Step 3 Step 4​
Mathematics
1 answer:
Shtirlitz [24]3 years ago
3 0

Answer:

Step 2 shows Emily's first mistake.

Step-by-step explanation:

3(2) = 6

But instead of this Emily wrote 3(2) = 9.

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Can someone please help me with this?
dedylja [7]

Answer:

e = 29.0 will be the answer.

Step-by-step explanation:

Use the sine rule in the given triangle,

\frac{EF}{\text{sin}(\angle D)}=\frac{DE}{\text{sin}(\angle F)}=\frac{DF}{\text{sin}(\angle E)}

\frac{d}{\text{sin}(35)}=\frac{16}{\text{sin}(30)}=\frac{e}{\text{sin}(115)}

d=\frac{16\times \text{sin}(35)}{\text{sin}(30)}

d = 18.35

\frac{16}{\text{sin}(30)}=\frac{e}{\text{sin}(115)}

e=\frac{16\times \text{sin}(115)}{\text{sin}(30)}

e = 29.002

e ≈ 29.0

Therefore, e = 29.0 will be the answer.

3 0
3 years ago
4^3 · 4-^6 Simplified<br><br> A) 4-3 <br> B) 4-9 <br> C) 4-18 <br> D) 43
Triss [41]

4^3 · 4-^6

= 4^(3 + (-6))

= 4^-3

Answer

A) 4^-3

8 0
3 years ago
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sergeinik [125]
The answer is (B)!!!!!!!!!!!!!!!!!!!!!!!!
4 0
3 years ago
What is the length of the figure?
nadezda [96]
There are two ways to do this. One is by adding up the squares, which takes a while. The other way is if you notice that the length along the bottom is the same as that long the top, and the same is true for the sides. While it does not appear this way at first, imagine that that was the floor plan of a house. If you looked at it from the side, you wouldn't see the dent in the corner, only one side. Since the length of the top is 13 units, from -7 to 6, and the side is also 13 units, from -6 to 7, the answer is 13*2 + 13* 2 = 26 + 26 = 52

52 units long.
4 0
3 years ago
Question is worth 25 points what is 15 squared?
makkiz [27]
The answer is 225
15•15=225
7 0
4 years ago
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