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melamori03 [73]
3 years ago
6

Simplify the expression: 7d +12-14d-3

Mathematics
1 answer:
Akimi4 [234]3 years ago
6 0
Group like terms
7d-14d+12-3
add them
-7d+9
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Help please need those answers
icang [17]

We know: The sum of the measures of the angles of a triangle is equal 180°.

We have: m∠A =65°, m∠B =  (3x - 10)° and m∠C = (2x)°.

The equation:

65 + (3x - 10) + 2x = 180

(3x + 2x) + (65 - 10) = 180

5x + 55 = 180        <em>subtract 55 from both sides</em>

5x = 125          <em>divide both sides by 5</em>

x = 25

m∠B =  (3x - 10)° → m∠B =  (3 · 25 - 10)° = (75 - 10)° = 65°

m∠C = (2x)° → m∠C = (2 · 25)° = 50°

<h3>Answer: x = 25, m∠B = 65°, m∠C = 50°</h3>
8 0
3 years ago
The circumference of a garden is 91.06 feet. what is the diameter of the garden?
Romashka-Z-Leto [24]

Answer:

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Step-by-step explanation:

91.06 / 3.14 = diameter = 29

radius = 29/2 = 14.5 feet

4 0
3 years ago
Evaluate 18 divided 2a if a = 3
Andreas93 [3]

Answer:

3

Step-by-step explanation:

\frac{18}{2a}

a = 3

\frac{18}{2(3)}

multiply 2 and 3

2 * 3 = 6

\frac{18}{6}

simplify

18/6 = 3

5 0
3 years ago
Give a step by step instructions
Lina20 [59]

Answer:

1. X-intercept is 5    Y-intercept is 4    (Red Line)

2. X-intercept is 1    Y-intercept is 2    (Blue Line)

3. X-intercept is -2   Y-intercept is 4   (Green Line)

Step-by-step explanation:

DESMOS graphing calculator. Here is the graph showing my work:

7 0
3 years ago
Archaeologists can determine the diets of ancient civilizations by measuring the ratio of carbon-13 to carbon-12 in bones found
harkovskaia [24]

Answer:

yessirrr

Step-by-step explanation:

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3 years ago
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