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3 years ago

7

Help needed bad at math

1 answer:

ANTONII [103]3 years ago

6 0

first and second part put 0.75, then multiply 0.75 by 2 to get 1.50, then write in the third part 1 and 1/2

hope this helps

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An exponential function f(x)

natka813 [3]

Given:

An exponential function $f(x)=ab^x$ passes through the points (0, 12000) and (2, 3000).

To find:

The values of a and b.

Solution:

We have,

$f(x)=ab^x$ ...(i)

It passes through the point (0,12000). Putting x=0 and f(x)=12000 in (i), we get

$12000=ab^0$

$12000=a(1)$

$12000=a$

Given function passes through the point (2,3000). Putting x=2, a=12000 and f(x)=3000 in (i), we get

$3000=12000b^2$

$\dfrac{3000}{12000}=b^2$

$\dfrac{1}{4}=b^2$

Taking square root on both sides.

$\pm \dfrac{1}{2}=b$

For an exponential function b cannot be negative. So, $b=\dfrac{1}{2}$ .

Therefore, the value of a is 12000 and the value of b is $\dfrac{1}{2}$ .

3 0

3 years ago

Triangle A″B″C″ is formed using the translation (x + 1, y + 1) and the dilation by a scale factor of 3 from the origin. Which eq

FromTheMoon [43]

Answer:

$B''C''=3BC$

Step-by-step explanation:

we know that

The length of segment B''C'' is equal to the length of segment BC multiplied by the scale factor

step 1

Find the length of segment BC

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have the points

B(1,-3),C(-3,-3)

substitute the values

$BC=\sqrt{(-3+3)^{2}+(-3-1)^{2}}$

$BC=\sqrt{(0)^{2}+(-4)^{2}}$

$BC=4\ units$

The segment B''C'' is equal to the segment BC multiplied by the scale factor

The scale factor is 3

so

$B''C''=BC(3)$

$B''C''=3BC$

substitute

$B''C''=3(4)=12\ units$

4 0

3 years ago

Read 2 more answers

Find the slope of the line that passes through each pair of points.<br> (-3, 4) and (2, -3)

Nady [450]

Answer:

- $\frac{7}{5}$

Step-by-step explanation: this equation works if you have two points

$\frac{ y_{2-y_{1} } }{x_{2}-x_{1} } =slope$

-3-4/2-(-3)=-7/5

5 0

3 years ago

Which ordered pair is a solution of the equation y = -6x +7?

hram777 [196]

<span>(–6, 43) is the solution

</span><span>y = -6x +7

43 = -6(-6) + 7
43 = 36 + 7
43 = 43</span>

8 0

3 years ago

Andrew estimated the weight of his dog to be 60 lb. The dog’s actual weight was 68 lb. What was the percent error in Andrew’s es

arsen [322]

The equation for percent error is: $|\frac{Experimental - Accepted}{Accepted}| * 100$

60 lb is the experimental and 68 lb is the accepted.

Plug in you values...

$| \frac{60-68}{68}| * 100$ ≈ 11.76 %

8 0

4 years ago