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Ludmilka [50]
3 years ago
14

Follow the directions to solve the system of equations by elimination. 8x + 7y = 39 4x – 14y = –68

Mathematics
2 answers:
Anettt [7]3 years ago
7 0

Answer in the picture

alexandr402 [8]3 years ago
3 0

Answer:

x= 1/2

y= 5

Step-by-step explanation:

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Kim rode her biyciclye 135 miles in 9 weeks. Eric rode her biciclye 102 miles in 6 weeks riding the sam edistance each week what
sdas [7]

Answer:

A.) Eric rode 2 more miles per week than Kim rode

Step-by-step explanation:

A.) Eric rode 2 more miles per week than Kim rode

B.)Kim rode 3 more miles per week than Erick rode

C.) Kim rode 11 more miles per week than Erick rode

D.) Eric rode 17 more miles per week than Kim rode

Kim rode her biyciclye 135 miles in 9 weeks.

Number of miles Kim rode per week = Total miles travelled / number of weeks

= 135 miles / 9 weeks

= 15 miles per week

Eric rode her biciclye 102 miles in 6 weeks

Number of miles Eric rode per week = Total miles travelled / number of weeks

= 102 miles / 6 weeks

= 17 miles per week

The correct answer is

A.) Eric rode 2 more miles per week than Kim rode

3 0
3 years ago
Mrs. Sing invests $12,876 for her business at an annual interest rate of 7 percent for 3 years. Which number will Mrs. Sing subs
xeze [42]

Answer:

she wills substitute r with 7%.

Step-by-step explanation:

Just did it.

8 1
3 years ago
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I need help with geometry
Ad libitum [116K]
Same, i need help with geometry too :(
8 0
3 years ago
Which number is prime 57, 63, 51, 67
gavmur [86]
The best answer would be D) 67 because the other numbers are not prime.
4 0
3 years ago
Read 2 more answers
What is the surface area of the square pyramid below?
Reika [66]

The surface area of square pyramid is the sum of the area of all its sides.

If l is the slant height and base is s each then surface area of pyramid is given by:

Surface area = s2+2xsx l

From the given figure in the question:

S=6 cm ,l= 8cm.

Substituting these values in surface area formula we have:

Surface area = 62+2x6x8

Surface area = 36+96

Surface area =132cm2

6 0
3 years ago
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