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2 years ago

5

Need help with problem number 4? how do you get the answer?

1 answer:

givi [52]2 years ago

6 0

You know what 10³ means . . . it's 1,000 .

So you have to divide 948 by 1,000 .

That shouldn't be a problem to do with a pencil,
and it should be a piece-o-cake with a calculator.

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Write 603,478 in word form

Irina18 [472]

Six hundred three thousand four hundred seventy-eight

5 0

2 years ago

Read 2 more answers

Suppose an amount increases by 100% percent, then decreases by 100% percent. Find the final amount. Would the situation change i

Oksi-84 [34.3K]

No it will not change it will be 250% then it will decrease 100% down again back to 150%

6 0

2 years ago

HURRYYYYYYYYY!! What is the equation of the quadratic function with a vertex at (2, 25) and an x-intercept at (7,0)?

tangare [24]

Answer:

$y=-(x-7)(x+3)$

which is none of the choices provided.

Are you sure the question is right or even the choices?

You can even write it as:

$y=-(x+3)(x-7)$ but this is still not a choice.

Step-by-step explanation:

The vertex form of a quadratic is $y=a(x-h)^2+k$ .

This is called vertex form because it gives you the vertex is $(h,k)$ .

We are given that $(h,k)=(2,25)$ which makes our equation:

$y=a(x-2)^2+25$ .

We can find the value of $a$ by plugging in the x-intercept (7,0) for $(x,y)$ into:

$y=a(x-2)^2+25$

$0=a(7-2)^2+25$

$0=a(5)^2+25$

Subtract 25 on both sides:

$-25=a(5)^2$

$-25=a(25)$

Divide both sides by 25:

$\frac{-25}{25}=a$

$-1=a$ .

So the equation for the quadratic is:

$y=-1(x-2)^2+25$

Let's put this into factored form since all the choices are in factored form.

This will require us to multiply the (x-2)(x-2) out:

$y=-1(x-2)(x-2)+25$

$y=-1(x^2-2x-2x+4)+25$

$y=-1(x^2-4x+4)+25$

$y=-x^2+4x-4+25$

$y=-x^2+4x+21$

Factor out -1:

$y=-(x^2-4x-21)$

WE need to find two numbers that multiply to be -21 and add to be -4:

$y=-(x-7)(x+3)$

8 0

2 years ago

Read 2 more answers

Jacob opened a money-market account. In the first month, he made an initial deposit of $500, and

natima [27]

Answer:

after 13 months

Step-by-step explanation:

........ur welcome..........

1475-500=975

975÷75=13

so 13 months

6 0

2 years ago

What is the line of symmetry on this graph?

Kisachek [45]

Answer:

(0.5,0)

Step-by-step explanation:

The line of symmetry is if you drew a line straight down the middle (vertically) of the parabola and where it would hit the x-axis

4 0

2 years ago