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9966 [12]
3 years ago
9

The ratio of the weight of a book to the weight of a mug is 7:5. What fraction of the total weight of the book and mug is the we

ight of the book?
Mathematics
1 answer:
sergeinik [125]3 years ago
7 0

Answer:

  7/12

Step-by-step explanation:

You can pretend the given ratio units are the actual weights. Then the desired ratio is ...

  book : mug = 7 : 5

  book : (book +mug) = 7 : (7 +5) = 7 : 12

The weight of the book is 7/12 of the total weight.

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Mattie uses the discriminant to determine the number of zeros the q
enot [183]

Answer:for ax^2+bx+c=0 the discriminant is b^2-4ac

there are 3 basic cases of what happens for different discriminants

1. if the discriminant is less than 0, then there are no real zeroes

2. if the discriminant is 0, then it has 1 zero

3. if the discriminant is greater than 0, it has 2 zeroes

so given

0=3x^2-7x+4

a=3,b=-7,c=4

thus the discriminant is (-7)^2-4(3)(4)=49-48=1

the discriminant is 1. 1 is positive, thus the equation has 2 zeroes because the discriminant is greater than 0

the answer is the equation has two zeroes because the discriminant is greater than 0

Step-by-step explanation:

3 0
3 years ago
The cities Cleveland, Ohio; Erie, Pennsylvania; and Rochester, New York, in respective order, lie approximately in a straight li
Ann [662]

Answer:

  Erie to Rochester is 145 miles

Step-by-step explanation:

If we designate the points of interest as C, E, and R, we are told that ...

  CE + ER = CR . . . . . the various distances are segments of a straight line

For CE = 94 and CR = 239, we can fill in the given information and solve for ER.

  94 + ER = 239

  ER = 239 -94 . . . . . . subtract 94 from both sides of the equation

  ER = 145

The distance from Erie to Rochester is 145 miles.

7 0
4 years ago
Which number makes the statement true <br> 12:30 = x:50 <br> A) 30<br> B) 32<br> C) 35<br> D) 41
lora16 [44]

Answer:

i think options are incorrect

x is 20 here

you can verify by putting value

6 0
3 years ago
Read 2 more answers
PLEASE HURRY!!
Sedaia [141]
Just a moment while I review this
6 0
3 years ago
2 2/3 plus 3 1/4 as a fraction
oksano4ka [1.4K]

Answer:

5\frac{11}{12} or \frac{71}{12}

Step-by-step explanation:

6 0
3 years ago
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