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liq [111]
2 years ago
8

Solve for x. x/7 + 9 = 15

Mathematics
2 answers:
soldi70 [24.7K]2 years ago
7 0
X=42 . i did it on photo math. if you have answers like these go on photomath next time !
Svetlanka [38]2 years ago
3 0

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em> </em><em>⤴</em>

<em>hope</em><em> </em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>.</em><em>:</em><em>)</em>

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Jess is 12 years less than half as old as Mac. The sum of their age is 87. How old is each person?
laila [671]

Answer:

The age of each person is:

  • Jess is <u>21</u> years old.
  • Mac is <u>66</u> years old.

Step-by-step explanation:

To solve this problem you must make two equations. First, we name Jess and Mac as variables:

j = Jess age.

m = Mac age.

Now we make the equations, the first equation has the information "Jess is 12 years less than half as old as Mac":

1. j=(\frac{m}{2})-12

The second equation has the information "The sum of their age is 87":

2. j+m=87

Now, we replace the first equation in the second one:

  • (\frac{m}{2}-12) +m=87

And we operate:

  • \frac{m-24}{2} +m=87
  • \frac{m-24+2m}{2}=87
  • \frac{3m-24}{2}=87

We clear the variable m:

  • 3m-24=87*2
  • 3m=174+24
  • m=\frac{198}{2}
  • m=66

How we know Mac's age is 66 years old, we can identify Jess' age with the second equation:

  • j+m=87

We replace the value of m:

  • j+66=87

And clear the variable j:

  • j=87-66
  • j=21

In the end, Jess's age is 21 years old.

4 0
3 years ago
In circle J with mZHLK = 18, find the mZHJK.
zysi [14]

Answer:

The measure of angle HJK is 36°

Step-by-step explanation:

<em><u>In a circle</u></em>, <em>the measure of the inscribed angle equal half the measure of the central angle subtended by the same arc</em>

In circle J

∵ J is the center of the circle

∵ H and K lie on the circle

∴ ∠HJK is a central angle subtended by arc HK

∵ L lies on the circle

∴ ∠HLK is an inscribed angle subtended by arc HK

→ By using the rule above

∵ ∠HJK and ∠HLK are the central angle and inscribed angle

   subtended by the same arc HK

∴ m∠HLK = \frac{1}{2} m∠HJK

∵ m∠HLK = 18°

∴ 18 = \frac{1}{2} m∠HJK

→ Multiply both sides by 2

∴ 36 = m∠HJK

∴ The measure of angle HJK is 36°

3 0
3 years ago
Derek weighs 155 pounds and drives a utility vehicle that can carry no more than 220 pounds. He plans to use his utility vehicle
liraira [26]
By the looks of this the answer is E

Derek weighs 155
155+220
8 0
3 years ago
If an object falls 40 meters in 4 seconds,how far will it fall in6 seconds​
sweet [91]

Answer:

60 seconds

Step-by-step explanation:

step 1.) find how many meters it falls per second

          40m / 4sec = 10m/s

step 2.) use the equation above to find in terms of the question

          10m/s for 6sec = 10 x 6 ====> 60 seconds

4 0
2 years ago
Find the value of x in the triangle shown below
gregori [183]

Answer:

A or 53 squared

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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