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3 years ago

For the function h(x)= 4x^2-5x, what is the value of h(-3)?

Mathematics

1 answer:

Vikki [24]3 years ago

7 0

4(-3)^2-5(-13)
-7^2+15
-7^17

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Write each expression in exponential form 2 x 2 x 2 x 2 =

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Answer:

2^4

Step-by-step explanation:

there are four 2's being multiplied to each other.

You can combine them and say 2 x 2 x 2 x 2 = 2 ^4

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3 years ago

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A housepainter mixed 2 gallons of blue paint with

maria [59]

Answer:

Option D: 6:12 is correct answer.

Step-by-step explanation:

We can find the simplest form of ratio to compare it with the given ratios.

According to given statement,

The ratio is:

$No.\ of\ Blue\ Paint\ Gallons: No.\ of\ red\ paint\ gallons\\2:4\\Simplifying\\1:2$

Now we will check if the given options can be simplified to 1:2

So,

Option A:

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Option B:

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Option D:

$6:12\\1:2$

As we can see that 6:12 can be simplified to 1:2 which is same as 2:4 so it will make the same shade of purple.

Hence,

Option D: 6:12 is correct answer.

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3 years ago

Solve the missing side in the right triangle below

maw [93]

Answer: the root of 145 so b

Step-by-step explanation:

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If prices increase at a monthly rate of 1.2%, by what percentage do they increase in a year?

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1.2% x 12 months (1 year) = 14.4%

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3 years ago

Prove that 1/sec0-tan0= sec0+tan0

Leviafan [203]

Answer:

Step-by-step explanation:

$\text{LHS}=\frac{1}{\sec \theta-\tan \theta}\\=\frac{\sec \theta+\tan \theta}{(\sec \theta-\tan \theta)(\sec \theta+\tan \theta)}\\=\frac{\sec \theta+\tan \theta}{\sec^{2} \theta-\tan^{2} \theta}\\=\frac{\sec \theta+\tan \theta}{1}\\=\sec \theta+\tan \theta\\=\text{RHS}$

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1 year ago