Which fraction is equivalent to ? A. B. C. D.

Choose the value of x that makes the open sentence true 40-x^2 < 2x+15.

S_A_V [24]

I believe the answer is B, but I'm not 100% sure. :)

6 0

4 years ago

Read 2 more answers

What two numbers multiply to give 36 but add up to -13

ra1l [238]

The numbers -9 and -4
Hope this helped :)

5 0

4 years ago

Read 2 more answers

Write the formula for the area of a triangle, A=1/2bh in terms of h. Find the height of a triangle when A = 18 in. squared and b

Elena L [17]

The height of the given triangle is

5 0

4 years ago

What is the equation line that passes through the point (-6,-5) and has a slope of -1\2

tensa zangetsu [6.8K]

If the y intercept isn't -5 go to ur coordinate that is given and find where the y intercept is and plug in the y intercept to y=mx+b

6 0

4 years ago

The length and width of a rectangle are measured as 55 cm and 49 cm, respectively, with an error in measurement of at most 0.1 c

valentina_108 [34]

Answer:

The maximum error in the calculated area of the rectangle is $10.4 \:cm^2$

Step-by-step explanation:

The area of a rectangle with length $L$ and width $W$ is $A= L\cdot W$ so the differential of A is

$dA=\frac{\partial A}{\partial L} \Delta L+\frac{\partial A}{\partial W} \Delta W$

$\frac{\partial A}{\partial L} = W\\\frac{\partial A}{\partial W}=L$ so

$dA=W\Delta L+L \Delta W$

We know that each error is at most 0.1 cm, we have $|\Delta L|\leq 0.1$ , $|\Delta W|\leq 0.1$ . To find the maximum error in the calculated area of the rectangle we take $\Delta L = 0.1$ , $\Delta W = 0.1$ and $L=55$ , $W=49$ . This gives

$dA=49\cdot 0.1+55 \cdot 0.1$

$dA=10.4$

Thus the maximum error in the calculated area of the rectangle is $10.4 \:cm^2$

4 0

3 years ago