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3 years ago

Which is a different way to express 7 ( y+ 6) ?

Mathematics

1 answer:

marta [7]3 years ago

5 0

Im not sure if this answers your question, there isn't much detail.

If we were to do the distrubitive property -- 7y+42

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6.34 1.645<br> 10.3401-0.34<br> 45

Nostrana [21]

Step-by-step explanation:

dude wut r we suppose to do??

8 0

3 years ago

Your friend tells you that if you let her keep 2020 of your Pokemon cards for three months, she will give you 22 cards extra whe

Dmitrij [34]

Answer: 40 %

Step-by-step explanation:

Let the amount of one card = x

Hence, the value of 20 cards ( Principal amount ) = 20x

And, the value of 22 cards ( Total amount after 3 month ) = 22x

⇒ Total interest in 3 month = 22x - 20x =2x

Let the annual interest rate = r %

$\frac{20x\times r\times 3/12}{100}=2 x$ ( By the formula of simple interest rate )

$\implies \frac{10\times r\times 1/4}{100}=1$

$\implies \frac{10r}{400}=1$

$\implies 10r=400$

$\implies r=40\%$

Hence, the annual rate of interest = 40%

8 0

3 years ago

Can someone please tell me how to do these problems

kow [346]

These are so easy, you won't believe it !

A negative exponent only means

"Put all of this in the denominator, and make the exponent positive."

So (any number)^negative power =

1 / (the same number)^(the same power but not negative) .

The first few problems on that sheet:

1). 5^-3 = 1 / 5^3

2). 6^-10 = 1 / 6^10

3). (-2)^-5 = 1 / (-2)^5

Got it ? You can do the rest of them now in about 2 minutes.

4 0

3 years ago

Find the value of x and y

Romashka [77]

Step-by-step explanation:

$\triangle ABC \sim\triangle DEF..(Given) \\ \therefore \frac{AB}{DE} =\frac{BC}{EF}=\frac{AC}{DF}..(CSST)\\\\\therefore \frac{6}{4} =\frac{7}{x}=\frac{8}{y}\\\\ \therefore \frac{6}{4} =\frac{7}{x} \\ \therefore \: x = \frac{7 \times 4}{6} \\ \\\therefore \: x = \frac{28}{6} = \frac{14}{3} \\ \\ \huge \red{ \boxed{ \therefore \: x = \frac{14}{3} }} \\ \\ \because \: \frac{6}{4} =\frac{8}{y} \\ \\ \therefore \:y = \frac{4 \times 8}{6} \\ \\ \therefore \:y = \frac{32}{6} \\ \\ \huge \purple{ \boxed{ \therefore \:y = \frac{16}{3} }}\\ \\$

6 0

3 years ago

Help me please ThankYou !!

matrenka [14]

My answer would be A.

3 0

3 years ago