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Nezavi [6.7K]
3 years ago
14

Can someone help me with this maths question? workings would be appreciated :]

Mathematics
1 answer:
NARA [144]3 years ago
6 0

Answer:

total amount of sweets=230

Step-by-step explanation:

ratio=8:5:10

total ratio=8+5+10

=23

Adrian=x

Charlie= x+20

Ben=1/2×(x+20)

Charlie's share

10/23×(x+20+x+(1/2×x+20))=x+20

10/23×(x+20+x+(x+20/2))=x+20

10/23×(x+20+x+x+20/2)=x+20

10/23×(2(x+20)+(2×x)+(x+20/2)/2=x+20

10/23×(2x+40+2x+x+20)/2=x+20

10/23×(2x+2x+x+40+20)/2=x+20

10/23×(5x+60)/2=x+20

50x+600/46=x+20

50x+600=46(x+20)

50x+600=46x+920

50x-46x=920-600

4x=320

4x/4=320/4

x=80

Total amount of sweet

x+x+20+1/2(x+20)

80+80+20+1/2(80+20)

180+1/2(100)

180+50

230

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Calculate 6.75% tax on $2,305. a. $15.56 b. $145.22 c. $146.14 d. $155.59
Dennis_Churaev [7]

D. $155.59 is the correct answer

$2,305*.0675=$155.5875 round to $155.59

6 0
4 years ago
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. Tony works at a bike store. Tony earns $300 every week plus $15 for every bike that he sells. Write an inequality that can be
Romashka-Z-Leto [24]
Well seeing that he already gets 300 he only needs to make 200 so do 200 divided by 15 which would equal 13.33 repeating so if he sold 14 bikes he would have $210  300 + 15(b)=500 1st step 500-300=200 2nd step 200/15=13.33 round to 14 step 3 14x15=210 so he would need to sell 14 bikes
4 0
3 years ago
Can someone PLEASE answer this and explain I really need help I’ll mark brainliest
svetlana [45]

Answer:

Michael = x÷7

lee = 2(x÷7)

(x÷7)+2(x÷7)

Step-by-step explanation:

since he earns x dollars every seven days, to get the amount he earns, you divide that amount by 7 and for Lee, she gets twice as much so you multiply Michael's amount by 2

7 0
3 years ago
What would it be help!
Talja [164]

Answer:

35°

Step-by-step explanation:

If BCD is 75, then BCA is 105.

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Which of the following is the equation of a line that passes through (-2,1) and (-4,-3)?
LiRa [457]

Points X(-2,1) and (-4,-3) are defined therefore we have all data we need to construct equation.

Linear function has a form of,

y=ax+b

First calculate the slope a.

a=\dfrac{dy}{dx}=\dfrac{-3-1}{-4-1}=\dfrac{-4}{-5}=\dfrac{4}{5}

Now plug in the coordinates of either one of the points into the linear function. I'll pick point X.

y=ax+b\Longrightarrow1=\dfrac{4}{5}\cdot(-2)+b

Now just solve for b.

1=-\dfrac{8}{5}+b\Longrightarrow b=\dfrac{13}{5}

The equation is therefore,

\boxed{y=\dfrac{4}{5}x+\dfrac{13}{5}}

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r3t40

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4 years ago
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