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svp [43]
3 years ago
10

Kathi and Robert

Mathematics
1 answer:
Ad libitum [116K]3 years ago
4 0

10.5x + 3y = 811.5

x + y = 97

y = 97 - x

3y = 291 - 3x

7.5x + 291 = 811.5

7.5x = 811.5 - 291

x = 520.5 / 7.5

x = 69.4

69 were sold at the original price

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I have 5 more papers todo please help
Alexxx [7]

Answer:

(A), (C), (D), (E)

Step-by-step explanation:

All of them shows an increase of x by 35%.

Hope this helps :)

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8 0
3 years ago
Leonard spent 1 fourth of his money on a sandwich. He spent 2 times as much on a gift for his brother as on some comic books. He
natima [27]

Answer:

1/8

Step-by-step explanation:

Leonard spent 1 fourth of his money on a sandwich.

Fraction of money spent on sandwich = 1/4

He spent 2 times as much on a gift for his brother as on some comic books.

= 1/4 × 2

= 2/8

Hence, Fraction of money spent on Comic books = 2/8

He had 3 over 8 of his money left.

Let us represent his total money has: 1

The fraction of his money that he spent on the comic books is calculated as:

= 1 -( 1/4 + 2/8+ 3/8)

Lowest Common Denominator = 8

= 1 - (2 +2 + 3/8)

= 1- 7/8

= 1/8

Therefore, the fraction of his money that he spent on the comic books is 1/8

4 0
3 years ago
Nine fourths minus two thirds
Yuki888 [10]

Answer:

1 \frac{7}{12}  \: or \: 1.583

Step-by-step explanation:

nine fourths is also

\frac{9}{4}

two thirds is also

\frac{2}{3}

subtract,

\frac{9}{4}  -  \frac{2}{3}

L.C.M = 12

\frac{27 - 8}{12}

\frac{19}{12}

1  \frac{7}{12}  \: or \: 1.583

7 0
3 years ago
Plz help! Is this right? Question is below!
Ivanshal [37]

Answer:

yes

Step-by-step explanation:

3 0
3 years ago
What is the value of x in the equation 4x + 1.3 = -7.9
forsale [732]

Answer:

  • x = - 2.3

Step-by-step explanation:

  • 4x + 1.3 = -7.9
  • 4x = -7.9 - 1.3
  • 4x = -9.2
  • x = -9.2/4
  • x = - 2.3
4 0
3 years ago
Read 2 more answers
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