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rosijanka [135]
3 years ago
15

A rational number can be written as the ratio of on BLANK to another.

Mathematics
1 answer:
swat323 years ago
4 0
"Integer" I think! As all rational numbers can be written as integer fractions.
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Write and equati9n of a l8ne that passes through (1,-2) and is perpendicular to -4x+7y=21
yarga [219]

Given:

A line passes through (1,-2) and is perpendicular to -4x+7y=21.

To find:

The equation of that line.

Solution:

We have, equation of perpendicular line.

-4x+7y=21

Slope of this line is

m_1=-\dfrac{\text{Coefficient of x}}{\text{Coefficient of y}}

m_1=-\dfrac{-4}{7}

m_1=\dfrac{4}{7}

Product of slope of two perpendicular lines is -1.

m_1\times m_2=-1

\dfrac{4}{7}\times m_2=-1

m_2=-\dfrac{7}{4}

Now, slope of required line is -\dfrac{7}{4} and it passes through (1,-2). So, the equation of line is

y-y_1=m(x-x_1)

where, m is slope.

y-(-2)=-\dfrac{7}{4}(x-1)

4(y+2)=-7(x-1)

4y+8=-7x+7

4y+7x=7-8

7x+4y=-1

Therefore, the equation of required line is 7x+4y=-1.

7 0
2 years ago
Find the area of the figure<br> A) 450MM<br> B) 67,500 MM<br> C) 600MM<br> D)150MM
Sphinxa [80]
Thats it option (C). Hope it helps!!

5 0
3 years ago
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A doorway is 7 1/2 feet tall. How many inches tall is the doorway?
neonofarm [45]

Answer:

6.07/212

Step-by-step explanation:

5 0
2 years ago
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There are two positive numbers. four times the small number plus 3 times the big number is 41. two times the small number plus t
xxTIMURxx [149]
The small number is 2 the large number is 11.
4(2)+11(3)=41
2(2)+11=15
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hope that helps
4 0
3 years ago
Jose bought 9 movie tickets for a total of $54. Adult tickets cost $8 each and child tickets cost $3.50. How many adult tickets
MArishka [77]

Answer:

5

Step-by-step explanation:

5 x 8 = 40

3.50 x 4 = 14

4 0
3 years ago
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