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2 years ago

2/5 + 1/4 + 7/10 = what's the answer

Mathematics

1 answer:

kotegsom [21]2 years ago

4 0

Convert 2/5, 1/4 and 7/10 to fractions with like denominators.

$\bf{\dfrac{2\times4}{5\times4}+\dfrac{1\times5}{4\times5}+\dfrac{7\times2}{10\times2} \ \ \to \ \ \ Multiply }$

$\bf{\dfrac{8}{20}+\dfrac{5}{20}+\dfrac{14}{20} }$

Since 8/20,5/20 and 14/20 have the same denominator, add their numerators to add them up.

$\bf{\dfrac{8+5+14}{20} \ \ \to \ \ \ Add. }$

$\green{\underbrace{\red{\boxed{\purple{\boxed{\bf{\blue{\frac{27}{20} }}}}}} \ \ \to \ \ \bf{\red{Answer}}}}$

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Make x the subject of the formula (help again)<br>I'm really bad at these <br><br>xk-w=y

7nadin3 [17]

Answer:

x = (y+w)/k

Step-by-step explanation:

xk-w=y

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xk-w+w=y+w

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Divide each side by k

xk/k = (y+w)/k

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5 0

4 years ago

Read 2 more answers

A Bird Is flying 5 m/s. How far will it travel if it flies for 3minutes

Diano4ka-milaya [45]

The bird is flying at 5m/s, so
1 sec = 5 m

It flies for 3 mins
3 mins = 3 x 6sec
3 mins = 180 sec
The bird flies for 180 seconds

1 sec = 5 m
180sec = 5 x 180 = 900m

The bird flew 900m in 3 mins (Answer C)

7 0

3 years ago

What is an equivalent expression to 4 + 5(-6c-6) pleaseeeeeeee pleaseeeeeeee help

Anna007 [38]

Answer:

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8 0

3 years ago

Given s left parenthesis t right parenthesis equals 5 t squared plus 5 ts(t)=5t2+5t, find

finlep [7]

Answer:

The velocity function is $v(t)=10t+5$ .

The acceleration function is $a(t)=10$ .

When t = 44, the velocity is $v(44)=445 \:\frac{ft}{s}$ .

When t = 44, the acceleration is $a(44)=10\: \frac{ft}{s^2}$ .

Step-by-step explanation:

We know that the position function is given by

$s(t)=5t^2+5t$

Velocity is defined as the rate of change of position or the rate of displacement. If you take the derivative of the position function you get the instantaneous velocity function.

$v(t)=\frac{ds}{dt}$

Acceleration is defined as the rate of change of velocity. If you take the derivative of the instantaneous velocity function you get the instantaneous acceleration function.

$a(t)=\frac{dv}{dt}$

The instantaneous velocity function is given by

$v(t)=\frac{d}{dt} s(t)=\frac{d}{dt}(5t^2+5t)\\\\\mathrm{Apply\:the\:Sum/Difference\:Rule}:\quad \left(f\pm g\right)'=f\:'\pm g'\\\\v(t)=\frac{d}{dt}\left(5t^2\right)+\frac{d}{dt}\left(5t\right)\\\\\mathrm{Apply\:the\:Power\:Rule}:\quad \frac{d}{dx}\left(x^a\right)=a\cdot x^{a-1}\\\\v(t)=10t+\frac{d}{dt}\left(5t\right)\\\\\mathrm{Apply\:the\:common\:derivative}:\quad \frac{d}{dt}\left(t\right)=1\\\\v(t)=10t+5$

The instantaneous acceleration function is given by

$a(t)=\frac{dv}{dt} =\frac{d}{dt}(10t+5)\\\\\mathrm{Apply\:the\:Sum/Difference\:Rule}:\quad \left(f\pm g\right)'=f\:'\pm g'\\\\a(t)=\frac{d}{dt}\left(10t\right)+\frac{d}{dt}\left(5\right)\\\\a(t)=10$

To find the velocity and acceleration when t = 44, we substitute this value into the velocity and acceleration functions

$v(44)=10(44)+5\\v(44)=445 \:\frac{ft}{s}$

$a(44)=10\: \frac{ft}{s^2}$

6 0

4 years ago

Number 5 all letters anyone? due tomorrow at 8 am

Yuri [45]

Answer:

d.1060

e.140

f.340

g.230

hope it helps

Pls give brainliest

6 0

3 years ago

2/5 + 1/4 + 7/10 = what's the answer ​

2/5 + 1/4 + 7/10 = what's the answer