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11111nata11111 [884]
2 years ago
8

A textbook store sold a combined total of 294 physics and psychology textbooks in a week. The number of psychology textbooks sol

d
was 42 less than the number of physics textbooks sold. How many textbooks of each type were sold?
Mathematics
1 answer:
miv72 [106K]2 years ago
5 0

Answer:

105 psychology textbooks. 189 physics textbooks.

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Determine m angle F by using the figure
matrenka [14]

Answer:

The measure of angle F is m∠F=130°

Step-by-step explanation:

step 1

Find the measure of angle E

we know that

An isosceles triangle has two equal sides and two equal interior angles

In this problem

DF=EF ----> given problem

so

Triangle DEF is an isosceles triangle

m∠D=m∠E

we have

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substitute

m∠E=25°

step 2

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we know that

The sum of the measures of the interior angles in a triangle must be equal to 180 degrees

so

m∠D+m∠E+m∠F=180°

substitute the values

25°+25°+m∠F=180°

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m∠F=180°-50°

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Answer:

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Step-by-step explanation:

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3 years ago
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Which of the following is the correct graph of the solution to the inequality -13> -5x+2> -28?
anyanavicka [17]

Answer:

first option

Step-by-step explanation:

solving the inequality

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since the symbol is < then end values will be an open circle with the values between shaded blue, that is the first graph

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mr_godi [17]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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