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Serhud [2]
3 years ago
13

A=1/2bh for b

align="absmiddle" class="latex-formula">
Mathematics
1 answer:
valkas [14]3 years ago
5 0
Times both sides by 2
2A=bh
divide both sides b h
\frac{2A}{h}=b
b=\frac{2A}{h}
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Harrizon [31]
Multiply 5x200x0.75 and then convert your answer to yards :)
5 0
3 years ago
Use the arc length formula to find the length of the curve y = 4x − 5, −1 ≤ x ≤ 3. Check your answer by noting that the curve is
Reptile [31]

Answer:

4\sqrt{17}

Step-by-step explanation:

Let's find the answer by using the arc length formula which is:

\int\limits^a_b {\sqrt{1+(\frac{dy}{dx})^{2} } } \, dx

First, let's find dy/dx which is:

y=4x-5

y'=4*(1)-0

y'=4, now let's use the formula:

\int\limits^3_{-1} {\sqrt{1+4^{2}} } \, dx=\sqrt{17} *(3-(-1))=4\sqrt{17}

Now, using the distance formula we have:

d=\sqrt{(x2-x1)^{2} +(y2-y1)^{2} }

y(-1)=4*(-1)-5=-9 \\y(3)=4*(3)-5=7

So we have two points (-1, -9) and (3, 7) so:

d=\sqrt{(3-(-1))^{2} +(7-(-9))^{2} }=4\sqrt{17}

Notice both equations gave the same length 4\sqrt{17}.

5 0
3 years ago
Based on the given information, what is the measure of the missing length, c?
salantis [7]

Answer:

c=5\ units

Step-by-step explanation:

we know that

In the right triangle ABC of the figure

Applying the Pythagoras Theorem

AC^{2}=AB^{2}+BC^{2}

substitute the given values

13^{2}=c^{2}+12^{2}

Solve for c

169=c^{2}+144

c^{2}=169-144

c^{2}=25

c=5\ units

4 0
3 years ago
Which of the following lines has a negative slope? <br> Is it Red<br> Is it Black<br> Is it Blue
Katena32 [7]

Answer:

black line <3

Step-by-step explanation:

the slope is -2 :)

3 0
3 years ago
Read 2 more answers
Glenda and Fiero are at a restaurant eating meal that costs $30. They have a discount coupon that gets them 10% off the cost. If
yaroslaw [1]

The cost of meal = $30

The tip to the waiter = 8%%

Discount = 10%%

Cost = 30 + 0.08 * 30 - 0.1 * 30

Cost = 30(1 + 0.08 - 0.1)

Cost = $$29.40

8 0
2 years ago
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