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3 years ago

Write the sentence as an equation. 345 reduced by m is the same as 229

Mathematics

2 answers:

Mars2501 [29]3 years ago

6 0

Answer:

345 - m = 229

Step-by-step explanation:

ludmilkaskok [199]3 years ago

6 0

Answer:

345-m=229

Step-by-step explanation:

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In the diagram, AD=CD=CB and measure of angle A=40°. How many degrees are in angle DCB?

Ad libitum [116K]

Answer:

$20^{\circ}$

Step-by-step explanation:

Consider triangle ACD. This triangle is isosceles triangle, because AD = DC. Angles adjacent to the base AC are congruent abgles, so

$m\angle DAC=m\angle DCA=40^{\circ}$

The sum of the measures of all interiror angles in the triangle is always $180^{\circ},$ then

$m\angle DAC+m\angle DCA+m\angle ADC=180^{\circ}\\ \\40^{\circ}+40^{\circ}+m\angle ADC=180^{\circ}\\ \\m\angle ADC=180^{\circ}-40^{\circ}-40^{\circ}=100^{\circ}$

Angles ADC and BDC are supplementary angles (add up to $180^{\circ}$ ), then

$m\angle BDC=180^{\circ}-100^{\circ}=80^{\circ}$

Consider triangle BCD. This triangle is isosceles triangle because BC = DC. Angles adjacent to the base BD are congruent abgles, so

$m\angle BDC=m\angle DBC=80^{\circ}$

The sum of the measures of all interiror angles in the triangle is always $180^{\circ},$ then

$m\angle DBC+m\angle BDC+m\angle BCD=180^{\circ}\\ \\80^{\circ}+80^{\circ}+m\angle BCD=180^{\circ}\\ \\m\angle BCD=180^{\circ}-80^{\circ}-80^{\circ}=20^{\circ}$

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3 years ago

NEED HELP FAST!! A line has a slope of -3 and a y-intercept of 5. Write the equation of the line in slope-intercept form and exp

Nookie1986 [14]

Answer:

y = -3x + 5

Step-by-step explanation:

To graph a linear equation in slope-intercept form, we can use the information given by that form. For example, y=-3x + 5 tells us that the slope of the line is -3 and the y-intercept is at (0,5). This gives us one point the line goes through, and the direction we should continue from that point to draw the entire line.

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3 years ago

An furniture salesperson sells a couch for $1,560. She receives a 2.75% commission on the sale of the couch. How much did she ea

Soloha48 [4]

992.73 .............................

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3 years ago

Read 2 more answers

Which equation describes the line with a slope of 5 and containing the point (2, 4) in slopeintercept form?

yulyashka [42]

Given m = 5 and point (2,4), the point-slope form is
y - y1 = m(x - x1)
y - 2 = 5x - 4
y = 5x - 4 + 2
y = 5x - 2

That is the line of the equation.

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