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3 years ago

Help me pls I don’t know how to do this

Mathematics

1 answer:

nalin [4]3 years ago

5 0

a=area

b=base

h=height

you have to divide 4.86 with 1.8 it Gives you 2.7

that's your answer .

b=2.7 yd

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Can someone simplify and explain how you did it?<br> -10+4(2b+2)=

emmasim [6.3K]

-10+2b+8
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Calculated sum
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2 years ago

If y varies directly with x when y=8,x=20 find the value of x when y=42

Alecsey [184]

The value of x is 105 when y=42

Step-by-step explanation:

A direct proportion means that the change in one quantity will also cause the change in other quantity

Given

y varies directly with x

x ∝ y

when the proportionality symbol is removed a proportionality constant is introduced

$x=ky\\k=\frac{x}{y}\\Putting\ y=8\ and\ x=20\\k=\frac{20}{8}\\k = \frac{5}{2}\\So,\ the\ equation\ will\ be\\x=\frac{5}{2}y\\Putting\ y=42\\x=\frac{5}{2}*42\\x=5*21\\x= 105$

The value of x is 105 when y=42

Keywords: Proportion, Direct variation

Learn more about proportion at:

#LearnwithBrainly

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3 years ago

Can you read each graph for its unit rate and type the correct code? Please remember to type in ALL CAPS with no spaces

Ray Of Light [21]

Answer:

1.5, 20, 40, 7.5

Step-by-step explanation:

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2 years ago

The first row of a theater has 16 seats. There are 3 more seats in each row thereafter. How many seats are in the 25th row/

inessss [21]

Answer: 88

Step-by-step explanation:

Given

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this follows an AP with the first term $a=16$ and common difference $d=3$

So, no of seats in the 25 th row is

$\Rightarrow a_{25}=a+24d\\\Rightarrow a_{25}=16+3\times 24\\\Rightarrow a_{25}=88$

Thus, there are 88 seats in the 25 th row

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3 years ago

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Harman [31]

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3 years ago