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Zigmanuir [339]
3 years ago
7

What two numbers have a sum of 217 and a difference of 85?

Mathematics
1 answer:
Setler [38]3 years ago
8 0

Answer:

the two numbers are 151 and 66

Step-by-step explanation:

x+y =217

x-y = 85

add the two equations

x+y =217

x-y = 85

-------------

2x = 302

divide by 2

2x/2 = 302/2

x = 151

now find y

x+y =217

151+y =217

subtract 151 from each side

y = 217-151

y =66

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-3(n+9)=15<br> i need the step of solving this plzz brainliest if right!!
raketka [301]

Answer:

n = -14

Step-by-step explanation:

-3(n+9)=15

Distribute -3 to (n+9):

-3n - 27 = 15

Add 27 to both sides:

-3n = 42

Divide both sides by -3:

n = -14

5 0
3 years ago
A student incorrectly determined that the length of DE is 29 cm explaining that 12-7 = 5 and 36-7 = 29 explain what mistake the
FinnZ [79.3K]

Answer:

The length of the hypotenuse ≈ 39.7 cm

Explanation:

Since the given triangle is a right-angled triangle, this means that we can apply the Pythagorean theorem.

The equation for Pythagorean calculation is:

(hypotenuse)² = (first leg)² + (second leg)²

In the given, we have:

first leg = 30 cm

second leg = 26 cm

Substitute with the givens in the above equation to get the hypotenuse as follows:

(hypotenuse)² = (30)² + (26)²

(hypotenuse)² = 1576

This means that:

either hypotenuse = √1576 = 39.69 ≈ 39.7 cm ..........> accepted

or hypotenuse = -√1576 = -39.69 ......> rejected as length can't be negative

Hope this helps :)

6 0
2 years ago
What is 18.5% of 500?
denis-greek [22]

Answer:

92.5

Step-by-step explanation:

18.5% = 0.185

0.185 x 500 = 92.5

Hope that helps!

4 0
3 years ago
The volume of 10,000 drops of liquid is a 1 fluid ounce. what is the volume of 1000 drops?
Paraphin [41]
1/10 is the answer if you divide 10,000 from 1,000
10000 \div 1000
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3 years ago
What is the volume of the prism?​
Naddika [18.5K]

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420

Step-by-step explanation:

sorry if im wrong

8 0
3 years ago
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