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tangare [24]
2 years ago
5

15 = -2 (2t - 1) show work and explain

Mathematics
1 answer:
olga_2 [115]2 years ago
7 0
15=-2(2t-1) -- expand brackets
15=-4t+2 -- subtract 2
13=-4t -- switch signs, best to have a positive variable
4t=-13
t=-13/4
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Given right triangle ABC. To the nearest degree, find the measure of angle B.
DedPeter [7]

Answer:

Step-by-step explanation:

We have the length of AC which is opposite angle B; we also have the length of the hypotenuse.  We will use trig here to solve for angle B.  The sin ratio is the one that fits.

sin(B) = side opposite / hypotenuse:

sin(B)= \frac{ 4.8}{ 5.1} so

sin(B) = .9411764706

Now we will use the 2nd button on our calculators.  This will give us the missing angle value.  Press 2nd then sin and you will see on your screen:

sin^{-1 (

Enter that decimal after the open parenthesis and hit "enter" to get

B = 70.25 or 70°

4 0
3 years ago
Sally invests $5000 in an account earning 8% interest, compounded continuously. After how many years will she double her investm
juin [17]
Double is double, so you can solve
.. 2 = 1*e^(.08t)
and get the correct value of t.

Taking logs,
.. ln(2) = .08t
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6 0
3 years ago
Read 2 more answers
A(2/3x-3)=b solve for x
murzikaleks [220]

Answer:

x = \frac{3b}{2A} +\frac{9}{2}

Step-by-step explanation:

5 0
3 years ago
Please help me with this question!!!!!
amm1812

Answer:

B. H(x)=-.008(x-82)^{2}+83

Step-by-step explanation:

Well lets graph the following equation first,

H(x) = -.011(x - 82)^2 + 75

Then lets graph all the other equations.

Look at the image below↓

So A.

The purple line does not go farther or higher,

so A. is incorrect

B.

The black line goes higher and farther,

meaning it is correct.

C.

The red line goes farther but not higher.

So it is incorrect

D.

Again the blue line does not go farther of higher.

So its wrong.

<em>Thus,</em>

<em>answer choice B. </em>H(x)=-.008(x-82)^{2}+83 <em>is correct.</em>

<em />

<em>Hope this helps :)</em>

3 0
3 years ago
Given 2x – 4y= 4:<br> Transform this equation into slope-intercept form
jeka57 [31]

Answer:

y=1/2x-1

Step-by-step explanation:

-4y=4-2x

4y=4-2x

y=-1+1/2x

y=1/2x-1

8 0
3 years ago
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