2 years ago

Please help me with this one??

Mathematics

1 answer:

Leviafan [203]2 years ago

6 0

Answer:

Y =-25x +225

Step-by-step explanation:

First you can count the gradient first. Use then you can count y intercept

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Express 81 as the sum of first nine consecutive odd numbers

matrenka [14]

Answer:

see explanation

Step-by-step explanation:

The sum of the first 9 consecutive odd numbers is

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 81

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3 years ago

Joanna plans on hanging 3 pictures of different sizes on the wall of her staircase. She thinks it will look best if all 3 rectan

Natasha2012 [34]

In similar figures, the ratio between corresponding sides are the same.

$\frac{25}{35}=\frac{35}{49}$

Simplify the two to see that they are equal.
The top and bottom of the left fraction are divisible by 5.
The top and bottom of the right fraction are divisible by 7.

$\frac{5}7=\frac{5}7$

Of course, the dimensions of that third picture would have to be this fraction.
Let's test these answers.

$\frac{5}6\neq\frac{5}7$ ⇒ A is not a solution

$\frac{30}{42}=\frac{5}7$ ⇒ B is the solution
(divide the top and bottom by 6)

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3 years ago

X^2+9x+20=0<br><br> What are the steps to solve by factoring?

Dimas [21]

First simplify the equation and next multiply the 20 with the x^2 and find a number that adds together to give you the middle

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3 years ago

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The formula gives the height of an object in free fall at time t and acceleration g.

ale4655 [162]

t must equal √2h/g but I don't see that in the choices above

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