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umka21 [38]
3 years ago
11

Please help me answer this for my grade !! I will give braisnlt

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
6 0

Step-by-step explanation:

2x+3y=23 2x+3.7=23 2×1 + 3×7 = 23

3y= 23 2×+21= 23 2 + 21 = 23

23÷3 = 7 2x= 23-21

y=7 2x= 2

x= 1

5x+3y=17 5×4+3y=17

5x=17+3 20+3y=17

5×=20 20=17+3y

14÷5 = 4 20=20+y

x=4 y=20-20

y=0

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3 years ago
Jane's salary is increased by 2% to £39474. how much is her salary before the rise?
iVinArrow [24]
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4 0
3 years ago
The ratio of the sides of a triangle is 4:6:9. If the perimeter of the triangle is 95 meters,
Grace [21]

Answer:

45 meters

Step-by-step explanation:

Perimeter of the triangle is the sum of the 3 lengths of the traingle. Since the ratio of the sides is 4:6:9, let the shortest side be 4 units, the longest side be 9 units and the 3rd side be 6 units.

Units is represented as u.

Sum of all 3 sides= 95 m

4u +6u +9u= 95

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5 0
3 years ago
HELP WHAT IS THE ANSWERS
Temka [501]

Answer:   Letter Choice, (B)  ====>  4,256 pi cm^2


Step-by-step explanation:

<u>Formula: Surface Area of Cylinder  =   (2pi ) (r^2 )   +  2pi (r) (h)</u>



<u>Showing Work:</u>

<u>Radius  of the Base ===>  28cm</u>

<u>Height  =====>  48cm </u>

(2pi ) (r^2)    +   2pi (28)(48)

2 (pi) (r^2)     +    (circumference) (height)

2( pi) (r^2      +    2)( pi)(r)(h)

2 pi * (2) (r^2      +    (2)(r)(h)

2pi * (r^2        +       rh)

2(r)(pi)(r           +         h)

2( 28)(pi)(28       +       48)

56(pi)(76)

4256(pi)^2

<u>Therefore, Your Answer  ======>   Letter Choice; (B)  ======>  4,256pi cm^2</u>





Hope that helps!!!!!                                       : )


3 0
3 years ago
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