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astra-53 [7]
3 years ago
10

A. 4.5 B. 10 C. 5 D. None of the above ??

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0

Set up a ratio:

12/24 = x/9

Cross multiply:

24x = 108

Divide both sides by 24:

X = 4.5

The answer is 4.5

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Find the sum. 1. -7+(-5) <br> O-12 <br>O-2 <br>0 2 <br>0 12​
AleksAgata [21]

Answer:

-12

Step-by-step explanation:

-7+(-5)=

-7-5=

-12

7 0
3 years ago
John is 3 years older than Jim. Jim is 4 years less than half of Dana’s age. How old is each person if their ages add up to 167?
kogti [31]

Solution:

we are given that

John is 3 years older than Jim. Jim is 4 years less than half of Dana’s age.

Let the age of Jim be x years then we can say

Age of John=x+3

If diana Age is D then

x=D/2-4

It can be re-wriiten as

Diana age D=2x+8

Given that  their ages add up to 167

x+x+3+2x+8=167\\&#10;\\&#10;4x+11=167\\&#10;\\&#10;4x=167-11\\&#10;\\&#10;4x=156\\&#10;\\&#10;x=39\\

Hence jim is 39 nyears old, John is 39+3=42 years old. and Diana is 2*39+8=78+8=86 years old.

3 0
3 years ago
Marcia has stuffed animal collection . She has 10 dogs and 15 teddy bears .What is the ratio of digs to bears​
QveST [7]

Answer:

2:3

Step-by-step explanation:

3 0
3 years ago
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If b=p+5 and a=p^2+10p+1 find an expression that equals 2b+3a in standard form
olya-2409 [2.1K]

Answer:

3p² + 32p + 13

Step-by-step explanation:

Okay, so lets first solve for 2b. 2b = 2(p + 5), which is equal to 2p + 10. Now, let's solve for 3a. 3a = 3(p² + 10p +1), simplifying to 3p² + 30p +3. After adding 2b and 3a, we are able to get 2p + 10 + 3p² + 30p + 3 = 3p² + 32p + 13

8 0
2 years ago
Please Find the distance between the two points rounding to the nearest tenth (if necessary).
Sphinxa [80]

Answer:

10.29 u

Step-by-step explanation:

<u>Given :- </u>

  • Two points (7,4) and (-2,9) is given to us.

And we need to find out the distance between the two points . So , here we can use the distance formula to find out the distance. As,

:\implies D = √{(x2-x1)² + (y2-y1)²}

:\implies D =√[ (7+2)² +(9-4)²]

:\implies D =√[ 9² +5²]

:\implies D =√[ 81 +25]

:\implies D = 10.29

<h3>Hence the distance between the two points is 10.29 units .</h3>
8 0
3 years ago
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