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amid [387]
3 years ago
13

The formula P=0.01A^2 + 0.05A + 107 models a woman's normal systolic blood pressure, P, at age A. Use this formula to find the a

ge , to the nearest year, of a woman whose normal systolic blood pressure is 140mm hg.
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
6 0
0.01A²+0.05A+107=140
0.01A²+0.05A-33=0
A²+5A-3300=0
(A+60)(A-55)=0
a=55 or -60 (ignore the negative number because Age cannot be negative)
55 is the answer. 
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Maria is using a coordinate plane with the axes labeled only with integers. She says that the point (−0.5, 2) cannot be plotted
vodka [1.7K]

Answer:

Integers ={Positive Natuaral Number +Natural numbers having negative sign behind it+Zero}

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→Points marked on the X and Y axis on the Coordinate Plane=Integers only

→Point to be marked on the coordinate plane =(-0.5,2)

→As, points on both X and Y axis are integers only.To mark, -0.5 , mark a line between , 0 and -1,that will be ,-0.5.

→You can mark , any terminating decimal on the number line, which is marked with integers only.

→Terminating decimals are those decimals having 2^a ,\text{or}5^b, \text{or} 2^a \times 5^b in the denominator of a fraction.

So, to plot any terminating Decimal on the coordinate plane, you have to use property of Rational Numbers ,which is, you can find infinite number of terminating Decimal between two terminating Decimal.

→Mark -0.5 between 0 and -1 on the X axis.Similarly, mark integer 2 on the Y axis.Draw a line parallel to Y axis ,passing from (-0.5,0) and line parallel to X axis passing through (0,2).The intersection of these two lines will be required point (-0.5,2).

3 0
4 years ago
Read 2 more answers
Plssss help me i cant do this stuff
BabaBlast [244]

Answer:  See explanation:  10, 1, 1, -7

Step-by-step explanation:

I'll assume you are working with Excel.  The Product function multiplies all the cells given in the specified range.  Here, those are cells A2 through A5.  As presnted, this would be [10*5*0*(-7)] = 0, which is the value of cell B2.  If we want cell B2 to be -70, we must change one or more of the numbers in cells A2 to A5.

Initial:     10, 5, 0, -7   B2=0

Change:  10, 1,  1, -7   B2 = -70

Other combinations are possible.

5 0
3 years ago
Multiply the rational expressions: Divide the rational expressions:
Montano1993 [528]

Answer:

1). \frac{2}{(x+1)}

2). \frac{x^2}{2(x+1)}

Step-by-step explanation:

For multiplication of the rational expressions,

\frac{x}{(x+1)}\times \frac{2}{x}

= \frac{2x}{x(x+1)}

= \frac{2}{(x+1)}

For division of the rational expressions,

\frac{x}{(x+1)}\div \frac{2}{x}

= \frac{x}{(x+1)}\times \frac{x}{2}

= \frac{x^2}{2(x+1)}

[When the divisor is a rational expression or a rational number, we change the sign from division to multiplication and reciprocate or flip the fraction.

This is applicable for division of the rational expressions only].

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Answer:

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ElenaW [278]

Answer:

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Answer: 9/25 units ^2 :)

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