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3 years ago

Any help please? Having a hard time

Mathematics

2 answers:

german3 years ago

8 0

Answer:

the answer is c

Step-by-step explanation:

x and y have to be at least 12, so that's why the greater than sign was used

the amount of money had to be at most $230, so that's why the less than sign was used

they said x and y represent black and white respectively, so that means x is black and y is white, so it is 18x and 20y

gogolik [260]3 years ago

7 0

Answer:

x+y ≥ 12

18x+20y ≤ 230

Step-by-step explanation:

At least means that is the smallest number they can buy, so they must buy at least 12

x+y ≥ 12

no more than 230 means that is the maximum amount they can spend

18x+20y ≤ 230

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Answer:

Step-by-step explanation:

Area = ((a+b)/2)h=((7+13)/2)*6=60

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2 years ago

A line passes through the two given points. Is it vertical, horizontal, or neither?

Leviafan [203]

<u>Answer:</u>

A line passes through the two given points (5,2), (5,-2). The line is vertical line

<u>Solution:</u>

Given, two points are (5, 2) and (5, -2)

We have to find that a line that passes through the given two points is vertical or horizontal or neither.

First let us find the slope of the line that passes through given two points.

So, slope of line m $=\frac{y_{2}-y_{1}}{x_{2}-x_{2}} \text { where, }\left(x_{1}, y_{1}\right) \text { and }\left(x_{2}, y_{2}\right) \text { are two points on line. }$

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3 years ago

3. Points A, B, C, D, E, and F are integers. Use the clues to put the points in order

Dmitry_Shevchenko [17]

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3 years ago

In the equation x2 +10x + 24 = ( x + a) ( x + b), b is an integer. Find algebraically all possible values of b.

kramer

Multiply
(x+a)(x+b) = x^2 + bx + ax + ab
looking at; x^2 + 10x + 24
can you see that

ab = 24
bx + ax = 10x
then
a + b = 10

use substitution: a = 10 - b

(10-b)b = 24
10b - b^2 = 24
-b^2 + 10b -24 = 0
now find the values for b using the quadratic equation. I'm on my phone so you'll have to plug the numbers in. let me know if you have any questions.

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3 years ago

A triangle has an angle that measures 90°. The other two angles are in a ratio of 2:7. What are the measures of those two angles

marin [14]

Answer:

70° and 20°

let the other 2 angles be 7x and 2x

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9x=180-90

x=90/9

x=10

7x=7x10

2x=2×10

3 0

2 years ago