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3 years ago

13

There are two numbers that

1 answer:

Helen [10]3 years ago

3 0

Hey there!

The answers to your question is 8 and 9.

We can look at all the addends of 17, and see what 2 multiply to 72.

Have a great day hope it helps!

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OMG IM GONNA CRY I NEED HELP SO BADLY :(

andriy [413]

The answer should be either 2.5 x 10^4 or 2.1 x 10^4.
But I feel 2.5 x 10^4 is a better estimate.
Hope it helped :))

3 0

4 years ago

Read 2 more answers

Last year, Keiko had $20,000 to invest. She invested some of it in an account that paid %7 simple interest per year, and she inv

erma4kov [3.2K]

Answer:

$P_2 = \$6,000\\P_1 = \$14,000$

Step-by-step explanation:

The formula of simple interest is:

$I = P_0rt$

Where I is the interest earned after t years

r is the interest rate

$P_0$ is the initial amount

We know that the investment was $20,000 in two accounts

_______________________________________________

<u><em>For the first account</em></u> r = 0.07 per year.

Then the formula is:

$I_1 = P_1r_1t$

Where

$P_1$ is the initial amount in account 1 at a rate $r_1$ during t = 1 year

$I_1 = P_1(0.07)(1)\\\\I_1 = 0.07P_1$

<u><em>For the second account </em></u>r = 0.05 per year.

Then the formula is:

$I_2 = P_2r_2t$

Where

$P_2$ is the initial amount in account 2 at a rate $r_2$ during t = 1 year

Then

$I_2 = P_2(0.05)(1)\\\\I_2 = 0.05P_2$

We know that the final profit was I $1,280.

So

$I = I_1 + I_2=1,280$

Substituting the values $I_1$ , $I_2$ and I we have:

$1,280 = 0.07P_1 + 0.05P_2$

As the total amount that was invested was $20,000 then

$P_0 = P_1 + P_2 = 20,000$

Then we multiply the second equation by -0.07 and add it to the first equation:

$0.07P_1 + 0.05P_2 = 1.280\\.\ \ \ \ \ \ \ \ +\\-0.07P_1 -0.07P_2 = -1400\\-------------$

$-0.02P_2 = -120\\\\P_2 = 6,000$

Then $P_1 = 14,000$

4 0

3 years ago

If f(x) = x/4 -3 and g(x)= 4x^2+2x-4 find (f+g)( x)

Leno4ka [110]

We have that

<span>f(x) = x/4 -3
g(x)= 4x</span>²<span>+2x-4
find (f+g)( x)

step 1
adding the two functions together to create a new function.
[x/4 -3]+[4x²+2x-4]

step 2
making everything have a common denominator of 4 we get:
[(x-12+16x²+8x-16)]/4

step3
combine like terms in numerator
(16x²+9x-28)/4-----------> 4x²+(9/4)x-7

the answer is </span>4x²+(9/4)x-7

5 0

3 years ago

X+y=9<br> xy=7<br> (simultaneous equations) solve

AURORKA [14]

x is 8 and y is 1 .I'm sure.

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3 years ago

Please help me solve this problem

olga2289 [7]

1,025. Multiply 55 by 15, then add the $200 fee. I hope this helps :)

7 0

3 years ago