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Law Incorporation [45]
3 years ago
7

Individuals with hiv sometimes contract secondary infections that are rare in the rest of the population. this is because people

with hiv
a.are unable to fight off these secondary disease-causing organisms.
b.are more frequently exposed to these secondary disease-causing organisms.
c.release hormones that attract the secondary disease-causing organisms.
d.release substances that increase the strength of the secondary disease-causing organisms.
Mathematics
1 answer:
lakkis [162]3 years ago
6 0
A because people who have HIV have a weak immune system since there are less white blood cells because HIV affects the count and white blood cells help fight off infections.
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Heidi has an average score of 78 for her first six chemistry tests. If Heidi"s scores for the first four tests were 82,78,87, an
elixir [45]

Answer:

(A)74

Explanation:

Let her average score on the last two tests = x.

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Since the average score for her first six chemistry tests = 78

\frac{82+78+87+73+x+x}{6}=78

We then solve for x.

\begin{gathered} 320+2x=78\times6 \\ 320+2x=468 \\ 2x=468-320 \\ 2x=148 \\ x=\frac{148}{2} \\ x=74 \end{gathered}

Her average score for the last two tests is 74.

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1 year ago
Determine whether the situation calls for a survey, an observational study, or an experiment.
IrinaVladis [17]

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This situation calls for a survey.

Step-by-step explanation:

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Find the surface area of the figure shown.
balandron [24]

Answer:

The correct answer is option d.  576 ft^2

Step-by-step explanation:

From the figure we can see that a prism

<u>To find the surface area</u>

Surface area = Base area + area of 2 triangles + Two side area

Base area = length * breadth = 15 * 12 = 180 ft^2

Area of triangle = bh/2 = (12 * 8)/2 = 48 ft^2

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Area of two side = 2 * 150 = 300 ft^2

Surface area = 180 + 96 + 300 = 576 ft^2

The correct answer is option d.  576 ft^2

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