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3 years ago

Please help as soon as possible I really need the help! Thank you

Mathematics

1 answer:

forsale [732]3 years ago

5 0

Answer:

x = 1, y = 4, or x = -2, y = 1

Step-by-step explanation:

y = -x^2 + 5

-x + y = 3

Use substitution to solve for the equation

-x + (-x^2 + 5) = 3

-x^2 - x + 5 = 3 (simplifying)

-x^2 -x + 2 = 0 (simplifying)

(-x + 1)(x+2) = 0 (factoring)

-x + 1 = 0 or x + 2 = 0

-x + y = 3

-(1) + y = 3, or -(-2) + y = 3

just choose any one...

x = 1, y = 4

or x = -2, y = 1

(they both work)

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Irene reads that the 2004 census of whooping cranes tallied 213 birds which is 19 greater than 2003 the growth can be modeled us

lord [1]

Answer: The value of k is 0.09.

Step-by-step explanation:

Since we have given that

$P(t)=P(0)e^{kt}$

Here, k is the rate ,

t is the time,

In 2004, the whooping cranes tallied 213 birds,

So, P(t)=213

It is 19 greater than 2003,

So, P(0)=213-19=194

So, substitute all the values in given expression:

$213=194e^{k.1}\\\\\dfrac{213}{194}=e^k\\\\1.098=e^k\\\\\text{Taking log on both the side}\\\\\ln 1.098=k\\\\k=0.09$

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3 years ago

Simpify this expresion 7+5h+2h+7h2–2h2

yarga [219]

Answer:

$5h^2 + 7h + 7$

Step-by-step explanation:

We can simplify this expression by combining like terms.

To combine like terms, we are looking for terms that share the same variable and exponent.

First, we can see that the terms $7h^2$ and $-2h^2$ share the same variable (h) and the same exponent (2).

$7 - 2 = 5$

This simplifies to $5h^2$ .

Next, we can see that $5h$ and $2h$ share the same variable (h) and the same exponent (1) so we can add these.

$5+2=7$

This simplifies to $7h$ .

Lastly, we can see that we just have 7, no more terms with the same variable (none). So this is 7.

Adding up all the terms in standard form ( $ax^2 + bx + c$ ), we get $5h^2 + 7h + 7$ .

Hope this helped!

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agasfer [191]

Answer:

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Step-by-step explanation:

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Marrrta [24]

Answer:

i need the answer as well

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3 years ago

Original price:$89.00;markdown:33%

Anuta_ua [19.1K]

The answer is $59.99 =)

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