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Goshia [24]
3 years ago
5

Jose is 8 years older than his sister. The sum of their ages is 20. How old is Jose? yrs. old

Mathematics
1 answer:
Mashutka [201]3 years ago
3 0

Answer:

He is 20 years old.

Step-by-step explanation:

cuz 20 - 8 = 12(sisters age)

so if the sum of both their ages is 20 then, he is 20.

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-(y-7)=14 solve the following equation
enyata [817]

First, distribute the negative sign and get -y + 7 = 14

then subtract 7 from both sides and get -y = 7

Divide both sides by -1 and get y = -7

Hope this helps :)

3 0
3 years ago
Math problem help me. I got it wrong I think
lukranit [14]

Answer:

The answer is B

Step-by-step explanation: After solving this equation using y=mx+b

I got y=-4x+7

So they give us the slope which is negative 4

so you would throw in the x coordinate with the slope and multiply to get y=-12+7

then you would use the y coordinate to substitute the Y

-5=-12+7

i add twelve on both sides and end up with the y intercept being 7]

so I add them into the equation and got y=-4x+7

8 0
2 years ago
A stadium has 55,000 seats. Seats sell for ​$28 in Section​ A, ​$16 in Section​ B, and ​$12 in Section C. The number of seats in
salantis [7]
A=number of seats in section A
B=number of seats in section B
C=number of seats in section C

We can suggest this system of equations:

A+B+C=55,000
A=B+C                                      ⇒A-B-C=0
28A+16B+12C=1,158,000

We solve this system of equations by Gauss Method.

1             1              1               55,000
1            -1            -1                         0
28         16           12          1,158,000 


1             1              1               55,000
0            -2             -2             -55,000                                    (R₂-R₁)
0           12             16           382,000                                    (28R₁-R₂) 


1            1                1              55,000
0           -2              -2             -55,000
0            0                4               52,000                                     (6R₂+R₃)

Therefore:

4C=52,000
C=52,000/4
C=13,000


-2B-2(13,000)=-55,000
-2B-26,000=-55,000
-2B=-55,000+26,000
-2B=-29,000
B=-29,000 / -2
B=14,500.

A + 14,500+13,000=55,000
A+27,500=55,000
A=55,000-27,500
A=27,500.

Answer: there are 27,500 seats in section A, 14,500 seats in section B and 13,000 seats in section C.
3 0
3 years ago
Please helpppppppppp!
Keith_Richards [23]

Answer:

9

Step-by-step explanation:

The range of a data set is the largest number minus the smallest number. so it would be 9-0= 9

hope this helps!!

btw if somebody could please answer my recent question i would really appreciate it!!

7 0
3 years ago
What is the y-intercept of the line given by the equation below? Enter your answer as an ordered pair.
max2010maxim [7]

The y intercept of given equation y = 2x + 10 is (0, 10)

<em><u>Solution:</u></em>

Given equation of line is:

y = 2x + 10

<em><u>To find: y intercept of the line</u></em>

The point where a line or curve crosses the y-axis of a graph is y intercept

<em><u>Finding y - intercept:</u></em>

To find the y-intercept, plug 0 in for 'x' and solve for 'y'

<em><u>Substitute x = 0 in given equation</u></em>

y = 2(0) + 10

y = 0 + 10

y = 10

Thus the y intercept of given equation is (0, 10)

3 0
3 years ago
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