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3 years ago

10

Need help asap thank you.

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

The green and the red are similar because the angel measurements are the same and the sides on the green triangle are 1/2 of the red triangle

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4 5/7 subtract 1 6/7 is what in simplest form please show your work

BaLLatris [955]

Change the mixed fractions to an improper fraction.
4 5/7 = 32/7
1 6/7 = 13/7

Now you can easily subtract since both fractions have common denominators
32/7 - 13/7
(Think: 32 - 13 = 19)

Change the improper fraction to a mixed fraction
19/7 = 2 5/7

Answer: 2 5/7

Hope I helped =)

7 0

4 years ago

What is the standard form of 5x^2+5y^2-10x+20y-30=0

o-na [289]

$5x^2+5y^2-10x+20y-30=0$

We need to get the equation in square form

We apply completing the square method

$5x^2-10x+5y^2+20y-30=0$

Divide all the terms by 5

$x^2-2x+y^2+4y-6=0$

Group x terms and y terms separately

$(x^2-2x)+(y^2+4y)-6=0$

By completing the square method, we take half of coefficient of x and square it

$\frac{-2}{2} = -1$

square it $(-1)^2= 1$

Add 1 on both sides

$(x^2-2x+1)+(y^2+4y)-6=+1$

$\frac{4}{2} = 2$

square it $(2)^2= 4$

Add 4 on both sides

$(x^2-2x+1)+(y^2+4y+4)-6=0+1+4$

Add 6 on both sides

$(x^2-2x+1)+(y^2+4y+4)=6+1+4$

Now factor both parenthesis

$(x-1)^2+(y+2)^2=11$

The equation of the circle is $(x-1)^2+(y+2)^2=11$

7 0

4 years ago

A sofa is on sale for $219, which is 27% less than the regular price.<br> What is the regular price?

Tems11 [23]

Answer:

$300 was the regular price of the sofa.

Step-by-step explanation:

If $219 is 27% less than the regular price, then it represents 73% of the regular price.

Regular price = r.

r/1 x 73/100 = $219. Reverse this to find that $219/1 divided by 73/100 = r.

To divide fractions, reverse the second fraction and MULTIPLY:

$219/1 x 100/73 = 21900/73 = 300.

7 0

3 years ago

Abby has a beginning balance of $720 in her checking account. She writes two checks for $240 and $350 respectively and deposits

DochEvi [55]

$630

1. you add 240 and 350
240 + 350 = 590
2. subtract 720 from 590
720 - 590 = 130
3. add 500 and 130
500 + 130 = 630

5 0

3 years ago

What is the value of y in the formula shown when x = 4 5 ? y = 4 x + √x + 0.2 - 5x

Vika [28.1K]

Answer:

-38.1

Step-by-step explanation:

180 + 6.7 + 0.2 - 225

186.9 - 225

-38.1

8 0

3 years ago