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3 years ago

What is the first proportion? Someone please help, I have no idea what this means.

Mathematics

1 answer:

Olenka [21]3 years ago

7 0

Answer:1 is called the first term of the proportion, 2 is the second term, 5 is the third, and 10, the fourth. We say that 5 corresponds to 1, and 10 corresponds to 2.

Step-by-step explanation:

1 is called the first term of the proportion, 2 is the second term, 5 is the third, and 10, the fourth. We say that 5 corresponds to 1, and 10 corresponds to 2.

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A pound of ground beef costs $5 At this rate, what is the cost of 3 pounds

Nataliya [291]

Answer:

$15

Step-by-step explanation:

if one pound is $5 and we need 3, then we can multiply the price of one pound by 3. (3×$5) This gives $15

8 0

2 years ago

Read 2 more answers

Someone plplease help me with this ASAP

Vinil7 [7]

Answer: The slope is -6/5

Step-by-step explanation:

7 0

3 years ago

6. Write the equation of the line.

liberstina [14]

Answer:

y = x + 2

Step-by-step explanation:

As the equation of a line is in the form y = mx + c:

Step 1 - Calculate the y intercept

This can be done by looking at the y coordinate where x = 0:

y = mx + c

In the picture, the y intercept is 2 so:

y = mx + 2

Step 2 - Calculate the slope

This can be calculated by:

$\frac{\text{change in y}}{\text{change in x}}$

Get two sets of coordinates:

(0, 2) and (2, 4)

Calculate the changes by subtracting from one another:

$\frac{4 - 2}{2 - 0} \\\frac{2}{2}\\=1$

So the gradient is 1, meaning the equation of the line is:

$y = 1x + 2 \\\text{or}\\y = x + 2$

Hope this helps!

4 0

2 years ago

What is the measure of angle X ? A. 147 B. 33 C. 100 D. 60

Musya8 [376]

Answer:

the answer is a. 147

Explaination:

A triangle always has a sum of 180°.

We already have the angle of two sides give.

10° and 23°

To find the last missing side, you add 10° and 23°, and minus the result from 180°.

10+23= 33

180-33 = 147

6 0

3 years ago

Read 2 more answers

Need help please answer ASAP!

Dmitrij [34]

Answer:

46. (3) 29

47. (1) y = -4x + 3

48. (3) 3

49. (3) -1/2

50. (4) 25x - 75

Step-by-step explanation:

Question 46

Let red marbles be 2x + 3 and black marbles be x
2x + 3 + x = 42
3x = 39
x = 13
No. of red = 2(13) + 3 = 29 marbles
(3) 29

Question 47

Parallel to a line means the slope is the same
(1) y = -4x + 3

Question 48

For the expression to be undefined, the denominator has to be 0
x - 3 = 0
x = 3
(3) 3

Question 49

Slope = -4 - 1 / 4 + 6
Slope = -5/10
Slope = -1/2
(3) -1/2

Question 50

Total = 25x
Left 3 boxes at home = -3x = -3(25) = -75
(4) 25x - 75

6 0

1 year ago