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umka21 [38]
2 years ago
10

Help doing test

Mathematics
1 answer:
Sphinxa [80]2 years ago
4 0

Step-by-step explanation:

2x^2+3x=20

5x^2=20

x^2=4

\times  = \sqrt{4}

x=2

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Which is bigger 20% of 400 or 1//4 f 360
nekit [7.7K]
20% =20/100=2/10
20% of 400 =(2/10)*400 =80
1/4 of 360= (1/4)*360 =90
90>80, so 1/4 of 360 is bigger than 20% of 400
7 0
3 years ago
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I really need help with this, I'll give Brainliest to whoever answers correctly!
alexgriva [62]

Answer:

B) 5 5/8in x 9in is your answer

Step-by-step explanation:

First add the bottom numbers together (9+6+9) which gives you 24. Then multiply both sides by 3/8 (15 x 3/8= 5 <u>5/8</u>) and (24 x 3/8= <u>9</u>) making your answer 5 5/8 x 9

5 0
3 years ago
I need help is it A B C or D
Evgesh-ka [11]
Answer is A, different slopes
enjoy
6 0
2 years ago
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Scale copies.
Ksivusya [100]

Step-by-step explanation:

The value of x is 7......

8 0
3 years ago
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!!!!! PLEASE PLEASE HELP ME !!!!! IS ANYONE SEEING MY QUESTIONS??
iVinArrow [24]

<u>Answer</u>:

The correct option is C : x² + (y +3)² = 9 .

<u>Step-by-step explanation:</u>

We know that the general equation for a circle is ( x - h )² + ( y -k )²= r², Where,

  • r is the radius.
  • (h , k) is the center.

Let the point be ( 0 , -y) , since it is on negative y axis . And the circle passes through the origin that is (0,0) . Hence the center will be 3 units down the y - axis that is ( 0 , -3) .Hence h will be 0 and y = (-3) .

Now its given that the radius of the circle is 3. So on substituting r = 3 , in standard form we have ,

⇒ ( x -h )² + ( y - k )²= r²

⇒ ( x - 0)² + { y - (-3) }² = 3²

⇒ x² + ( y + 3) ² = 3²

⇒ x² + ( y + 3)² = 9

<h3><u>Hence the correct option is C [ x² + ( y+3)² = 9 ] .</u></h3>

• Note that I have attached the graph of the same .

7 0
2 years ago
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