2 years ago

B

Mathematics

1 answer:

zaharov [31]2 years ago

5 0

Vertical angles or opposite angles when line bf intersects line ce at point a. drawing it out helps

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What is the rate between 78 miles and 3 gallons of gas

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Answer:

26 miles per gallon

Step-by-step explanation:

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3 years ago

What is the sum of all the angles that are labeled?

Jobisdone [24]

Answer:

235

Step-by-step explanation:

Add the labeled angles

23+40+92+80

235

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3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B686x%5E4%20y%5E7%7D" id="TexFormula1" title="\sqrt[3]{686x^4 y^7}" alt="\sqrt

Sergio [31]

This answer is there in picture

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3 years ago

For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

3 0

3 years ago

A train picked up 20 people at station A. At station B 15 people got off and 3 people got on. How many people are on the train n

Step2247 [10]

Answer:

There are 8 people on the train.

Step-by-step explanation:

20 - 15 = 5

5 + 3 = 8

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3 years ago