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3 years ago

PLEAWSE HELP GIVING BRAINLIEST!!! PLEASEEEEEEEee

Mathematics

1 answer:

frutty [35]3 years ago

4 0

Answering so the person above can be marked brainliest

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Could someone help me on 6 7 and 8? So confused!!!!

Radda [10]

7. We know that they must all add up together to get 90 degrees because of the symbol show the right angle.
We can use this to form and solve an equation:
2x +1x + 30 = 90
3x+30 = 90 (add the x's together)
3x = 60 (subtract both sides by 30 to get the x's alone)
x =20 (divide by 3 to get what 1x is equal to)

(The next question is very similar)
8. To solve this, we need to know what all the x's together are equal to.
Since angles on a straight line add up to 180 degrees -we can make an equation:
4x+x+30 = 180
5x + 30 +180 (add all the x's together)
5x = 150 (subtract both sides by 30 to get what 5x is equal to)
x = 30 (divide by 5 to get what just 1x is)

Hoped this helped - please ask if anything doesn't make sense!

5 0

4 years ago

Need help with this :(

emmainna [20.7K]

Answer:

B. m = $\frac{3}{2}$ , y-int = 3

Step-by-step explanation:

To find the slope of the line, we need to plot two points

(2, 6) (-2, 0)

m = slope

Then use the Slope-Formula to Solve for the slope

m = $\frac{y2-y1}{x2-x1}$

m = $\frac{0-6}{-2-2}$

m = $\frac{-6}{-4}$

m = $\frac{6}{4}$

m = $\frac{3}{2}$

The Slope is $\frac{3}{2}$

The y-intercept is 3 because the line is going 3 units upwards on y axis!

Equation: y = 3/2x + 3

Slope: 3/2

y-intercept: 3

5 0

3 years ago

Read 2 more answers

What is 20 percent of seventy

koban [17]

'is' in mathematics means equal
'of' in mathematics means multiplication

<span>20% can also be written as 20/100

</span> $x = \frac{20}{100} \times 70\\\\x =\frac{20}{10} \times 7\\\\x = 2 \times 7\\\\\boxed{\bf{x = 14}}$ <span>
</span>

7 0

3 years ago

Read 2 more answers

-5/7 (10 -1/5) Math equation

sukhopar [10]

Answer:

-7

Step-by-step explanation:

5 0

4 years ago

Can you explain to me how to find this ? Thank you !

Zepler [3.9K]