3 years ago

Can someone please help me I tryed already

Mathematics

1 answer:

Anit [1.1K]3 years ago

3 0

Answer:look at the picture below

Step-by-step explanation:

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Please help.. (This is meant to be infinite, so I can't use a calculator)

Alex17521 [72]

Answer:

Step-by-step explanation:

→ Let x = √20 + √20 .....

→ Square both sides

x² = 20 + √20 +√20 + √20

→ Replace √20 +√20 + √20 with x

x² = 20 + x

→ Move everything to the left hand side

x² - 20 - x = 0

→ Factorise

( x + 4 ) ( x - 5 )

→ Solve

x = -4 , 5

→ Discard negative result

x = 5

7 0

2 years ago

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The number of dogs to the number of cats at the pet rescue is 3:5. If there are a total of 65 cats at the rescue center, how man

snow_lady [41]

_:65
65/5=13
13*3=39
39:65
39 dogs

6 0

3 years ago

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In a ten pin bowling the highest possible score in a single game is 300. At one point in the season, John had an average score o

Sindrei [870]

Answer:

John need to get 293 in his next game to bring his average up to 183.

Step-by-step explanation:

John starts with N games played and averaging 177 points per game.

In game N+1, John scored 199 points.

$\frac{177N + 199}{N+1}=178\\177N+199=178N+178\\N=21\\$

So, John has now played (N+1) = 22 games.

We need to know what score John needs in game 23 to bring his average to 183.

$\frac{177*21 + 199+Y}{23}=183\\3916+Y=4209\\Y=293\\$

8 0

3 years ago

The Johnson family's budget was $3,200 in September. If they spend 8% of their monthly budget on entertainment. How much money d

Alekssandra [29.7K]

Answer:

256

Step-by-step explanation:

3200 x 0.08 = 256

7 0

3 years ago

If x equals 8 -(-2.25) and y equals 6-4.2-(-4.9) what is the value of x-y

slamgirl [31]

Answer:

x = 10.25

y = 6.7

Step-by-step explanation:

X = 8 - (-2.25) = 10.25

Y = 6 - 4.2 - (-4.9) = 6.7

8 0

3 years ago