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2 years ago

10 = 3c − 2 c = what

Mathematics

1 answer:

creativ13 [48]2 years ago

4 0

Answer:

Step-by-step explanation:

Here you go mate

Step 1

10=3c-2 Equation/Question

Step 2

10=3c-2 Simplify

10=3c-2

Step 3

10=3c-2 Add +2

3c=12

Step 4

3c=12 Then you divide the exponents by 3

answer

c=4

Hope this helps

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What is the annual interest rate if $1600 is invested for 6 years and $456 in interest is earned

sergij07 [2.7K]

Use the formula i = p*r*t:
$456
$456 = $1600*r*6. Solving for r, r = ----------------- = 0.0475, or 4 3/4%
($1600)(6)

6 0

3 years ago

Martin throws a ball straight up in the air. the equation h(t) = -16t^2 + 40t + 5 gives the height of the ball, in feet, t secon

Lisa [10]

Answer:

2.62 seconds

Step-by-step explanation:

Let

t ----> the time in seconds

h(t) ----> he height of the ball, in feet

we have

$h(t)=-16t^2+40t+5$

we know that

When the ball hits the ground, the height is equal to zero

$-16t^2+40t+5=0$

The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$

is equal to

$t=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+40t+5=0$

$a=-16\\b=40\\c=5$

substitute in the formula

$t=\frac{-40\pm\sqrt{40^{2}-4(-16)(5)}} {2(-16)}$

$t=\frac{-40\pm\sqrt{1,920}} {-32}$

$t=\frac{-40+\sqrt{1,920}} {-32}=-0.12\ sec$

$t=\frac{-40-\sqrt{1,920}} {-32}=2.62\ sec$

therefore

The solution is t=2.62 seconds

4 0

2 years ago

I’ll give brainliest:)

Natasha2012 [34]

Answer:

ok ok ok ok ok ok okok ok ok

6 0

3 years ago

Read 2 more answers

1. 16 is what percent of 40?

jonny [76]

Answer:

40%

Step-by-step explanation:

sloution is 16/40 only this we can get answer

4 0

3 years ago

152 ? 6394÷42 i don't understand how

Natasha2012 [34]

Answer:

Using long devision

Step-by-step explanation:

I believe the answer is B

8 0

2 years ago