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STatiana [176]
3 years ago
13

ZA and ZB are complementary angles. If mZA = (7x + 23)° and

Mathematics
1 answer:
Marat540 [252]3 years ago
5 0

Answer:

ZB= 39°

Step-by-step explanation:

complementary angles are angles that add up to equal 90

equation:  7x + 23 + 5x + 19 = 90

add like terms: 12x + 42 = 90

subtract 42 from both sides: 12x = 48

divide both sides by 12: x = 4

plug in the value of x to the equation for ZB: 5(4) + 19

simplify: ZB= 39°

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Answer:

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Step-by-step explanation:

Odd numbers: 5, 7, 9

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Find the equation of the line with a slope of 3/4 and passes through (4-2)
Ira Lisetskai [31]

Answer:

y = 3/4x - 5

Step-by-step explanation:

An equation of a line can be written in slope-intercept form:

y = mx + b

where m is the slope and b is the y-intercept.

Let's plug in what we know.

The slope is 3/4.

y = 3/4x + b

To find b, we want to plug in a value that we know is on this line: in this case, I will use the point (4, -2). Plug in the x and y values into the x and y of the standard equation.

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To find b, multiply the slope and the input of x(4)

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Now, subtract 3 from both sides to isolate b.

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Plug this into your standard equation.

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This is your equation. It has a slope of 3/4, and passes through (4, -2)

Hope this helps!

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3 years ago
What are to numbers that multiply to make 18 but add up to negative 9​
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Answer:

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Step-by-step explanation:

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Irina18 [472]

Answer:

\frac{1}{28}

Step-by-step explanation:

The result is given by means of some algebraic handling:

\frac{3}{16}\times \frac{4}{21}

\frac{12}{336} - Multiplication of rationals.

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Snowcat [4.5K]

Answer:

50% increase.

Step-by-step explanation:

(New Value - Initial Value)/(Initial Value) * 100 = percentage increase or decrease

(The formula)

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3 years ago
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