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3 years ago

If a : b = 4 : 3 and b : c = 6 : 5, what is a : c?please help!!

Mathematics

1 answer:

Gnoma [55]3 years ago

7 0

Answer:

8:7

Step-by-step explanation:

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GIVING A BRAINLIST PLZZ ASAP

Jobisdone [24]

Answer:

(b) Mr. Sánchez's class earned more money.

(a) $\displaystyle [42, 37] → [j, p]$

Step-by-step explanation:

{79 = p + j

{118,17 = 1,65p + 1,36j

−25⁄34[118,17 = 1,65p + 1,36j]

{79 = p + j

{−86 121⁄136 = −1 29⁄136p - j >> New Equation

__________________________

$\displaystyle \frac{-7\frac{121}{136}}{-\frac{29}{136}} = \frac{-\frac{29}{136}p}{-\frac{29}{136}}$

$\displaystyle 37 = p$ [Plug this back into both equations above to get the j-value of 42]; $\displaystyle 42 = j$

The next step is to plug the solution into the BOTTOM EQUATION to calculate the total money earned for each class:

Sánchez's class

$\displaystyle 61,05 = [37][1,65]$

Altogether, thirty-seven fruit pies cost $61,05.

Kelly's class

$\displaystyle 57,12 = [42][1,36]$

Altogether, forty-two bottles of fruit juice cost $57,12.

* Based on the calculation, it is perfectly clear that Mr. Sánchez's class earned more money by $3,93:

$\displaystyle 3,93 = -57,12 + 61,05$

I am delighted to assist you anytime my friend!

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3 years ago

Prove that cos^3x+3cos2x= 4 (cos^6 x-sin^6x)

gavmur [86]

But this isn't true... If $x=\dfrac\pi2$ , you have

$\cos^3\dfrac\pi2+3\cos\pi=0-3=-3$
$4\left(\cos^6\dfrac\pi2-\sin^6\dfrac\pi2\right)=4(0-1)=-4$

but of course $-3\neq-4$ .

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3 years ago

A man buys a marker at Rs. 40 and sells it at Rs. 50. What is the profit percentage?

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Answer:

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3 years ago

What is the expanded form of 1,693,222,527? A. 1,000,000,000 + 600,000,000 + 90,000,000 + 3,000,000 + 220,000 + 20,000 + 2,000 +

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Answer:

Step-by-step explanation:

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3 years ago

There were 239 people at a Travis Scott concert. Admission to the drive-in concert was $15 for adults and $5.50 for children. Th

daser333 [38]

Answer:

239 people 15$adults 5.50$ for kids

Step-by-step explanation:

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3 years ago

If a : b = 4 : 3 and b : c = 6 : 5, what is a : c?please help!!​

If a : b = 4 : 3 and b : c = 6 : 5, what is a : c?please help!!