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Dmitry_Shevchenko [17]
3 years ago
14

What.is the y intercept of a line given by the equation y=5×-21?

Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0

Answer:

-21

Step-by-step explanation:

If the equation of the line is

y=mx+b,

then m is the slope of the line and b is the y-intercept of the line.

In your case, the equation of the line is y=5x-21.

So, the slope of this line is m=5 and the y-intercept is b=-21.

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Step-by-step explanation:

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Please answer this question only if you know it! 25 points and brainliest!
krok68 [10]

Answer:

\boxed{70^\circ}

Step-by-step explanation:

Step 1. Calculate θ

\begin{array}{rcll}70^{\circ} + \theta + 60^{\circ} & = & 180^{\circ} & \text{Angles of straight line}\\130^{^{\circ}} + \theta & = & 180^{\circ}} & \\\theta & = & 50^{\circ} & \\\end{array}

Step 2. Calculate x

\begin{array}{rcll}60^{\circ} + \theta + x & = & 180^{\circ} & \text{Interior angles of triangle}\\60^{\circ} + 50^{\circ} + x & = & 180^{\circ} &\\110^{^{\circ}} + x& = & 180^{\circ} & \\\\x & = & \boxed{70^\circ} & \\\end{array}

4 0
3 years ago
Convert to scientific notation: 0.0509.
fomenos

Answer:

5.09 × 10^-2

Step-by-step explanation:

You have to take the number go to the decimal and move it until you get to the first number and in this case, it is 5 put the decimal there. To write it you have to count the number of times you moved the decimal. when doing this it will always be a number times 10^ the number you moved the decimal.

5 0
3 years ago
Four families each brought the same number of chairs to a block party. Three more chairs are needed to seat all 27 people how ma
Olin [163]
Hi! :)

This question states that four families each brought the same number of chairs. We know that 27 chairs are needed overall and 3 are still needed after the four families' contributions. 

Knowing this, you can figure out that you could do 27-3. This equals 24, so you would then just divide 24 by 4, since there are 4 families. 

Your final answer should be that each family brought 6 chairs. 

Hope this helps!
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ankoles [38]
1:9 would be the ratio
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