Answer:
B. (2, 7)
Step-by-step explanation:
(1) 5x + 3y = 31
(2) 2x + 3y = 25 Subtract (2) from (1)
3x = 6 Divide each side by 3
x = 2 Substitute in (2)
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4 + 3y = 25 Subtract 4 from each side
3y = 21 Divide each side by 3
y = 7
The solution is (2, 7).
=====
<em>Check:
</em>
(1) 5×2 + 3×7 = 31
10 + 21 = 31
31 = 31
(2) 2×2 + 3×7 = 25
4 + 21 = 25
25 = 25
775%
31/4=31x25/4x25=775/100.
Answer: 14.8units²
Step-by-step explanation:
The formula for calculate the area of a triangle is:
Where b () is the base and h () is the height.
The formula for calculate the area of a semicircle is:
Where r is the radius.
As you can see, the diameter is 5 units, then the radius is:
The area of the figure is the sum of the area of the triangle and the area of the semicircle.
Then, the result is:
Answer:
<h3>Toni can type words in 3 minutes is 270 words</h3>
Step-by-step explanation:
Given that the double number line shows that Toni can type 180 words in 2 minutes.
<h3>To find how many words can Toni type in 3 minutes:</h3>
From the given Toni can type 180 words in 2 minutes,
⇒ Toni can type
<h3>∴ 90 words per minute </h3>
For Toni would be able to type words in 3 minutes is
<h3>∴ 270 words per minute.</h3><h3>∴ Toni can type words in 3 minutes is 270 words.</h3>