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natta225 [31]
3 years ago
14

use the substitution method to solve the system of equations . choose the correct ordered pairs x+y=5 y=7 A.(12,7) B.(-12,7) C.

(-2,7) D.(2,7)
Mathematics
1 answer:
Alex3 years ago
4 0

Answer:

<em>C. (-2, 7)</em>

Step-by-step explanation:

Put y = 7 to the equation x + y = 5:

x + 7 = 5          <em>subtract 7 from both sides</em>

x = -2


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37 is 60% of what number?
liubo4ka [24]

Answer:

61 2/3 = n

Step-by-step explanation:

Is means equals and of means multiply

37 = 60% * n

37 = .60n

divide each side by .60

37 / .60 = .60n/.60

61.6666666 repeating = n

61 2/3 = n

6 0
3 years ago
Write an inequality pls help me on this question!
Helen [10]

Answer:

y = -2x + -3

Step-by-step explanation:

The line has a slope of -2 because when counting from point to point, its 2 down and one over; 2/1 or 2 (negative because the line is going down)

The intercept in -3 because thats the first place the line touches the y axis.

8 0
3 years ago
8 sandwiches cost £18.40<br> Find the cost of 5 sandwiches.
Eduardwww [97]

Answer:

11.5

because

8 18.40

5 ?

5×18.40=92

92÷8=11.5

7 0
1 year ago
Read 2 more answers
During a bike challenge riders have to collect various colored ribbons each half mile they collect a red ribbon each 8th mile th
soldi70 [24.7K]

Answer:

Green and Blue ribbon

Step-by-step explanation:

Given

They collect

Red Ribbon = ½ mile

Green Ribbon = ⅛ mile

Blue Ribbon = ¼ mile

To find?

Which colors of ribbons will be collected at the ¾ mile mark.

The interpretation of the question is to test which of the above fractions can divide ¾ without a remainder; in other words, multiples of ¾.

Testing each fraction.

Red Ribbon = ½

¾ ÷ ½

= ¾ * 2

= 3/2

= 1.5 or 1 Remainder 1

This is not an exact multiple of ¾. So, the red ribbon won't be passed here.

Green Ribbon = ⅛

¾ ÷ ⅛

= ¾ * 8

= 24/8

= 3

This is an exact multiple of ¾. So, the green ribbon will be collected.

Testing the last ribbon

Blue = ¼

¾ ÷ ¼

= ¾ * 4

= 3

This is an exact multiple of ¾. So, the blue ribbon will be collected.

Hence, the green and blue ribbons will be collected at ¾ mile mark

3 0
3 years ago
Marco created a table to help him represent the sample space of spinning a spinner and flipping a coin. Result of spin Result of
Svetradugi [14.3K]

The probability that the result is green - tail is 1/6.

Spinner has three colors that are  red, green and yellow and coin has two sides that are  head or tail.

<h3>What is the formula for probability?</h3>

Divide the number of events by the number of possible outcomes

The sample space is,{(red - head; red - tail; green - head; green - tail; yellow - head; yellow - tail)}In total there are 6 ways to combine different colors with coin sides.

Therefore ,the probability that the result is green - tail is 1/6.

To learn more about the probability visit:

brainly.com/question/25870256

5 0
2 years ago
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