2 years ago

In the expression 3y•10 what is coefficient

Mathematics

1 answer:

sertanlavr [38]2 years ago

3 0

Answer:

Step-by-step explanation:

A coefficient is a numerical factor that contains a variable.

In this case, 3 is a numerical factor and contains a variable (y).

Hence,

3 is the coefficient of the expression.

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Divide £32 in a ratio of 3:7

lord [1]

$3 + 7 = 10$

$32$ ÷ $10 = 3.2$

$3.2$ × $3 = 9.6$

$3.2$ × $7 = 22.4$

£9.60 : £22.40

3 0

2 years ago

Read 2 more answers

Solve the equation on the interval [0, 2pi): 12cos^2 x-9=0<br><br><br> What to do?

siniylev [52]

Answer:

$\large\boxed{x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}\ \vee\ x=\dfrac{7\pi}{6}\ \vee\ x=\dfrac{11\pi}{6}}$

Step-by-step explanation:

$12\cos^2x-9=0\qquad\text{add 9 to both sides}\\\\12\cos^2x=9\qquad\text{divide both sides by 12}\\\\\cos^2x=\dfrac{9}{12}\\\\\cos^2x=\dfrac{9:3}{12:3}\\\\\cos^2x=\dfrac{3}{4}\to\cos x=\pm\sqrt{\dfrac{3}{4}}\\\\\cos x=\pm\dfrac{\sqrt3}{2}\\\\\text{Look at the picture}\\\\x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}\ \vee\ x=\dfrac{7\pi}{6}\ \vee\ x=\dfrac{11\pi}{6}$