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3 years ago

X + y = 10 x - y = 2

Mathematics

2 answers:

user100 [1]3 years ago

6 0

Answer:

x will be 6

and y will be 4

6 + 4 = 10

6 - 4 = 2

x = 6

y = 4

lys-0071 [83]3 years ago

4 0

Answer:

x=6

y=4

Step-by-step explanation:

just find the number that will match or u could just plug in one of those number and find other number

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In ΔJKL, the measure of ∠L=90°, the measure of ∠J=25°, and KL = 26 feet. Find the length of LJ to the nearest tenth of a foot.

saul85 [17]

Answer:

55.8 feet

I hope this helps people

7 0

3 years ago

Rewrite Ohm's law, V = lR to solve for the current, l, and then use the formula to find the current when the voltage is 0.6 volt

Andreyy89

Answer:

0.05 amps.

Step-by-step explanation:

I remember this one from high school.

V=IR (V=Voltage, I=Current, and R= Resistor) *Substitue values.

I=V/R

0.6/12

Divide $\frac{6}{120}$ = 0.05 Ampere

4 0

3 years ago

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22-2+20 = 0x=12.2 |y
|
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__________|__________x_
|
20.5 |
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7 0

4 years ago

Alexandra scored 40 on an exam, receiving 3 points for each right answer and losing 1 point for each wrong answer. Had 4 points

vagabundo [1.1K]

Answer: there were 20 questions in the exam.

Step-by-step explanation:

Let x represent the number of right answers.

Let y represent the number of wrong answers.

Alexandra scored 40 on an exam, receiving 3 points for each right answer and losing 1 point for each wrong answer. It means that

3x - y = 40- - - - - - - - - - 1

Had 4 points been given for each right answer and 2 points deducted for each wrong answer, Alexandra would have scored 50. It means that

4x - 2y = 50- - - - - - - - - - -2

Multiplying equation 1 by 2 and equation 2 by 1, it becomes

6x - 2y = 80

4x - 2y = 50

Subtracting both equations, it becomes

2x = 30

x = 30/2

x = 15

Substituting x = 15 into equation 1, it becomes

3 × 15 - y = 40

45 - y = 40

y = 45 - 40

y = 5

The number of questions in the exam is

x + y = 15 + 5 = 20

3 0

3 years ago

Can someone help this

Zanzabum

Answer:

Step-by-step explanation:

The common factor is the largest number that goes into both of those numbers evenly. We do this by finding the prime factorization of each:

25: 5,5

35: 5,7

The common number to both is 5, so 5 is the common factor of both the numerator and denominator.

3 0

3 years ago