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3 years ago

Solve for x. MUST SHOW ALL WORK TO RECEIVE FULL CREDIT! (See picture for equation)

Mathematics

2 answers:

Gnom [1K]3 years ago

6 0

You have to cross multiply to get x on its own
1) Multiply everything by 2.4
$x= \frac{3 X 2.4}{8}$
2) Then simplify the fraction
$x= \frac{7.2}{8}$
3) You can either leave the answer as a fraction or you put it as a decimal
x=0.9

ioda3 years ago

5 0

$\frac{x}{2.4} = \frac{3}{8}$

For proportions and to find x we have to cross multiply
8 × (x) = 3 × 2.4

8x = 7.2
Divide by 8 to isolate x

$\frac{8x}{8} = \frac{7.2}{8}$
8 and 8 cancels out

x = 0.9

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I need help with a math question

Julli [10]

Answer:

Question 1: 4.5(10^−7)(2(10^4))

9/1000

(Decimal: 0.009)

Question 2:

mass of neutron/mass of electron = 2*10-24/(9*10-28)

2x10^(-24)/9x10^(-28)

d is closest.

Question 3:

4(10^3)(12(10^5))

=4000*1200000

=4*1000*12*100000

=(4*12)*(1000*100000)

=48*100000000

=4800000000

And these things : ^ mean raising the number to become exponets and when I put the number into a bold text thats the answer!

Hope this helps! if so pls mark brainliest and heart/rate!

3 0

3 years ago

BRAINLIESTT

Rudik [331]

9514 1404 393

Answer:

3 months

Step-by-step explanation:

We don't know what's on your list of "useful financial formulas." One that can be used here is the formula for simple interest:

I = Prt . . . . . interest on principal P at annual rate r for t years

Solving for t gives ...

t = I/(Pr)

Filling in the given values, we can find t to be ...

t = 138/(4800×0.115) = 138/552 = 1/4

1/4 year is 3 months -- the duration of the loan.

4 0

3 years ago

Add the two expressions.

Ierofanga [76]

-3.2b + 9
by adding like terms together.

3 0

3 years ago

Read 2 more answers

Suppose that the derivable functions x=x(t) and y=y(t) satisfy xcosy=2.

ololo11 [35]

Applying implicit differentiation, it is found that dy/dt when y=π/4 is of:

a-) -√2 / 2.

<h3>What is implicit differentiation?</h3>

Implicit differentiation is when we find the derivative of a function relative to a variable that is not in the definition of the function.

In this problem, the function is:

xcos(y) = 2.

The derivative is relative to t, applying the product rule, as follows:

$\cos{y}\frac{dx}{dt} - x\sin{y}\frac{dy}{dt} = 0$

$\frac{dy}{dt} = \frac{\cos{y}\frac{dx}{dt}}{x\sin{y}}$

Since dx/dt=−2, we have that:

$\frac{dy}{dt} = -2\frac{\cos{y}}{x\sin{y}}$

When y = π/4, x is given by:

xcos(y) = 2.

$x = \frac{2}{\cos{\frac{\pi}{4}}} = \frac{2}{\frac{\sqrt{2}}{2}} = \frac{4}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}} = 2\sqrt{2}$

Hence:

$\frac{dy}{dt} = -2\frac{\cos{y}}{x\sin{y}}$

$\frac{dy}{dt} = -\frac{1}{\sqrt{2}}\cot{y}$

Since cot(pi/4) = 1, we have that:

$\frac{dy}{dt} = -\frac{1}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}} = -\frac{\sqrt{2}}{2}$

Which means that option a is correct.

More can be learned about implicit differentiation at brainly.com/question/25608353

#SPJ1

4 0

1 year ago

If one day is 20 minutes then how many days are in 10 years

Tanzania [10]

Answer:

73050

Step-by-step explanation:

20*3652.5

8 0

2 years ago