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Afina-wow [57]
2 years ago
5

I don’t know the anwser pls help

Mathematics
1 answer:
Phantasy [73]2 years ago
7 0

Answer:

a.

Step-by-step explanation:

Katelynne says 5+2n=13 or 2n+5=13 its the same, adn Kylie says n+5*2=13, or 2(n+5)=13

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When exercising, the maximum heart rate (r ) in beats per minute is modeled by the equation shown in the box, where (a ) represe
worty [1.4K]

Answer:

186 beats per minute

Step-by-step explanation:

The maximum heart rate (r ) in beats per minute is modeled by the equation :

r = 220 - a ...(1)

Where

a is age of the person in years

If Sanchez age is, a = 34 years

Put a = 34 in equation (1)

r = 220 - 34

= 186 beats per minute

Hence, the maximum heart rate is 186 beats per minute.

7 0
3 years ago
Please help, and plz don't be saying this is the right answer if u dont know for sure.
zepelin [54]

Answer:

135 degrees

Step-by-step explanation:

(8x-7)+(12x+57)=180

combine like terms

20x+50 = 180

subtract 50 on both sides

20x = 130

divide by 20

x = 130/20

x = 13/2

x = 6.5

cpq = 12x+57

cpq = 78 + 57

cpq = 135

4 0
3 years ago
mrs. roberts makes 'regular' and 'low sugar' jam. she sells both kinds of jam in 340-grams jar.A Jar Of her Low sugar Jam Contai
Vinvika [58]

Answer:

Percentage of sugar in low sugar jam is

340÷100= 3.4

Divide 3.4 from 102.

102/3.4 =30

Therefore there is 30% of sugar in her low sugar jam

3 0
3 years ago
If you rewrite the problem 14(22) as 14(20+2) so that you can use mental math, which of the following properties will you use?
KiRa [710]
For this case, the property you can use is the following:
 Commutative property.
 We have then that:
 14 (20 + 2) = 280 + 28 = 308
 Equivalently:
 14 (2 + 20) = 28 + 280 = 308
 Either way the result is exactly the same.
 Answer: 
 Commutative property.
7 0
3 years ago
A house costs $600 more than twelve times the lot on which it was built. If the lot cost x dollars, what did the house cost?
PSYCHO15rus [73]

Answer:

600 + 12 x dollars I hope this is correct

5 0
3 years ago
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