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2 years ago

4

Mathematics

1 answer:

Tems11 [23]2 years ago

3 0

Answer:

The first answer is M. -10x - 1 + 35x - 1 + 15x + 1

maybe

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If A : B = 4 : 5 and B : C = 3 : 2, find A : B : C.

Sindrei [870]

Answer:

12 : 15 : 10

Step-by-step explanation:

Let A = 4x, the B = 5x

Let B = 3y, then C = 2y

B = 5x = 3y, so y = (5/3)x

Let x = 3t, so y = 5t

Then A = 4x = 4(3t) = 12t

B = 5x = 5(3t) = 15t

C = 2y = 2(5t) = 10t

so A : B : C = 12t : 15t : 10t = 12 : 15 : 10

6 0

1 year ago

Help me! Lots of points! Put these numbers in order from least to greatest:<img src="https://tex.z-dn.net/?f=4.35%20%2A%2010%5E%

aleksandrvk [35]

Answer:

4.84 × 10¹⁹

4.9 × 10¹⁹

4.35 × 10²⁰

Step-by-step explanation:

4.35 × 10²⁰ = 43.5 × 10¹⁹

4.84 × 10¹⁹

4.9 × 10¹⁹

Order is:

4.84 × 10¹⁹

4.9 × 10¹⁹

4.35 × 10²⁰

6 0

2 years ago

Read 2 more answers

A baby blue whale weighed 5520 pounds at birth. After two days, the baby weighed 5710. After 14 days, the baby weighed 8180 poun

Aleonysh [2.5K]

Answer:

Constant of proportionality is 190.

Step-by-step explanation:

To find proportionality constant we will find difference of weights after 2 days and at birth.

$5710-5520=190$

Now we will find difference of weights after 14 days and at birth. We will divide the difference by 14.

$\frac{8180-5520}{14}$

$\frac{2660}{14}=190$

We can see that weights are increasing at a constant rate of 190 pounds per day. Therefore, our constant of proportionality is 190.

8 0

2 years ago

Read 2 more answers

Darko is 5 years old and Zana is 8 years old. How old was Zana when she was twice as old as Darko? plz step by step

Tanya [424]

Answer:

6 years old

Step-by-step explanation:

8-5=3

Which means their age difference is 3.

3×2=6

4 0

2 years ago

Read 2 more answers

Which is better: Car A that travels 308 miles on 11 gallons of gasoline OR Car B that travels 406 miles on 14 gallons of gasolin

Jet001 [13]

$\begin{gathered} \text{Car A travels 308 miles on 11 gallons, so, the ratio of miles per galon is} \\ \frac{308}{11}=28\text{ miles per gallon} \\ \\ \text{for the car B, the ratio is} \\ \frac{406}{14}=29\text{ miles per gallon} \end{gathered}$

thus, the best car is car B,because it can tavel 29 miles with only one gallon,andcar A can only travel 28 miles with one gallon.

5 0

6 months ago