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3 years ago

I need help with this problem on homework

Mathematics

1 answer:

zvonat [6]3 years ago

7 0

The side given is 110*, and the side underneath that is 90*. If you add it together, That's 200*. Due to the sum property of a quadrilateral, we know that the angles must add up to 360* in total. So, we can simplify it as following.

(2x) + (x+10) = 360-200

2x + (x+10) = 160

2x + x = 160-10

2x + x = 150

x = 50

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2+3x=-4(5+2x) solve for x, help please

Misha Larkins [42]

Answer:

$x=-2$

Step-by-step explanation:

$2+3x=-4.(5+2x)$

$Expand \: the \: parentheses:$

$2 + 3x = - 4.5 - 4.2x$

$Simplify \: the \: arithmetic:$

$2 + 3x = - 20 - 4.2x$

$Solve \: by \: distributing:$

$2 + 3x = - 20 - 8x$

$Group \: all \: x \: terms \: on \: the \: left \: \\ side \: of \: the \: equation$

$2 + 3x = - 20 - 8x$

$Add \: 8x \: to \: both \: sides:$

$2 + 3x + 8x = - 8x + 8x$

$Simplify \: the \: arithmetic:$

$11x + 2 = - 20 - 8x + 8x$

$Group \: like \: terms:$

$11x + 2 = - 8x + 8x - 20$

$Group \: all \: constants \: on \: the \: right \\ \: side \: of \: the \: equation$

$11x + 2 = - 8x + 8x - 20$

$Subtract \: 2 \: from \: both \: sides:$

$11x + 2 - = - 20 - 2$

$Simplify \: the \: arithmetic:$

$11x = - 20 - 2$

$Simplify \: the \: arithmetic:$

$11x = - 22$

$Isolate \: the \: x$

$11x = - 22$

$Divide \: both \: sides \: by \: 11:$

$\frac{11x}{11} = \frac{ - 22}{11}$

$Simplify \: the \: fraction:$

$x = \frac{ - 22}{11}$

$Find \: the \: greatest \: common \: factor \\ \: of \: the \: numerator \: and \: denominator:$

$x = \frac{ - 2.11}{1.11}$

$Factor \: out \: and \: cancel \: the \: greatest \\ \: common \: factor:$

$x = - 2$

Thanks!!!!!!!

4 0

3 years ago

Read 2 more answers

In a seventh grade class, 14 out of 30 students are boys. In simplest terms, what is the ratio of the number of boys to the numb

Triss [41]

${Hello,\;There!}$

They already give you the number of boys {14}, so all you need to do is subtract 30 - 14 which will give you the ratio of girls.

It does this because 14 takes up $\frac{14}{30}$ of the seventh grade class.

$\text{30 - 14 = 16}$

So your answer is going to be 14:16 un-simplified.

However, since they ask you to put it in the simplest terms, we are going to simplify $\frac{14}{16}.$

You can do this by dividing both numbers by 2.

= $\frac{14 \div 2}{16 \div 2}=\frac{7}{8}$

$\bold{So\;your\;answer\;is\;going\;to\;be}$

$= \frac{7}{8}$ or $\text{7:8}$

$\rule{300}{1.0}$

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3 years ago

If a line has a slope of 1/2 and a y-intercept of -6, what is the x-coordinate if the y-coordinate is 4

ivanzaharov [21]

Answer:

X=20. Our x coordinate is 20.

Step-by-step explanation:

Based from the given slope of 1/2 and a y-intercept of -6, our equation of a line is y=x/2 -6. To remove the fraction we can multiply the equation by 2 to get 2y=x-12. Using this substitute the value of y coordinate 4.

2(4)= x-12

8+12 =x

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Pachacha [2.7K]

Answer:

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Step-by-step explanation:

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3 years ago

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There are 568 apples in the kitchen ready to make apple pies, if 50% of them are green, how many are green?

malfutka [58]

Answer:

284 apples are green

Step-by-step explanation:

50 is half of one hundred so you divided 568 by 2

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3 years ago