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Yuki888 [10]
2 years ago
7

Find the missing number in the proportion.

Mathematics
1 answer:
Soloha48 [4]2 years ago
8 0

Answer: 7

Step-by-step explanation: Cross multiply, so 15 times x and 21 times 5. 21 times 5 is 105 then you divide by 15 which gives you 7.

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Use the fact that sin 38 ≈ 0.6157 to solve m.
Anni [7]
Use cos^-1(0.6157) and u might find the answer
6 0
2 years ago
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For each pair of points below, think about the line that joins them. For which pairs is the line parallel to the y-axis? Circle
zaharov [31]

Answer:

a) Not parallel to y-axis

b) Not parallel to y-axis

c) Parallel to y-axis

Step-by-step explanation:

The best way to check whether a line passing through two points is parlle to y-axis is by plotting them on graph.

The equation of line: (y-y_1) = \frac{y_2 - y_1}{x_2 - x_1}(x-x_1)

a) The line joining the points (4,12) and ( 6,12) is not parallel to y-axis.

It is parallel to x-axis.  Another two points that can lie on this line are : (5,12) and (\frac{9}{2},12).

b) The line joining the points (\frac{3}{5}, \frac{13}{5}), (\frac{1}{5} ,\frac{8}{5}) is not parallel to y-axis.

Equation of line: 5y - 7.5x = 5.5

Another points that could be lie on this line are (0.6,2) and (0.25,1.475)

c) The line joining the points (0.8, 1.9), (0.8,2.3) is parallel to y-axis because points have the same x-coordinate.

Another points that could be lie on this line are (0.8,2) and (0.8,2.1)

5 0
3 years ago
Can i pls have help with is soooooooooo confused
STALIN [3.7K]

500.

Solution:  210 is 42% of X  

Equation: Y = P% * X  

Solving our equation for X

X = Y/P%

X = 210/42%  

Converting percent to decimal:

p = 42%/100 = 0.42  

X = 210/0.42  

X = 500

6 0
3 years ago
Find the slope of the line passing through the points (-2,-7) and (3,5).
Oduvanchick [21]

Answer:

12/5

Step-by-step explanation:

m= slope

m=Y2-Y1/X2-X1

Y2=5, Y1=-7, X2=3, X1=-2

Substitute into equation

m=5-(-7)/3-(-2)

m=5+7/3+2

m=12/5

slope is 12/5

5 0
3 years ago
Please help me solve 5m-12=38
fgiga [73]
Add 12 to both sides to get

5m= 50
divide by 5 to get
M=10
5 0
3 years ago
Read 2 more answers
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