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mihalych1998 [28]
3 years ago
5

Please help this is due tomorrow!!

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
4 0

Answer:

x+y=30 and x-y=8. Angel is 11 and Alex is 19

Step-by-step explanation:

30÷2=15

8÷2=4

15-4=11

15+4=19

19+11=30

Nikitich [7]3 years ago
3 0
Angel is 8 years old and Alex is 30 years old x-y=30
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Equation of the graph
natka813 [3]

Answer:

A and C

Step-by-step explanation:

It can not be D, since that will mean that <em>the line is perfectly horizontal</em>, with 0 as its slope.

It can be C, since the <em>equation's slope is positive and has a negative y-intercept</em>, like the graph.

Changing around A gives us y = 2x - 3. That has a <em>positive slope and a negative y-intercept</em>, like the graph. So, A is a possibility.

Changing around B gives us y = ²/₃x + 3. This has a positive slope, <em>but also a positive y-intercept</em>, so B can not be the answer.

4 0
3 years ago
Find the slope the line passing thru (8,4) and (9,-2)
Inessa05 [86]
Answer = -1/6
Solutions in the picture attached

6 0
3 years ago
The area (A) of a circle with a radius of r is given by the formula and its diameter (d) is given by . Arrange the equations in
ella [17]

Answer:

see explanation

Step-by-step explanation:

A = πr² ← r is the radius and r = \frac{1}{2} d ← d is the diameter

Hence

π (\frac{1}{2} d)² = A, that is

\frac{d^2\pi }{4} = A ( multiply both sides by 4 )

d²π = 4A ( divide both sides by π )

d² = \frac{4A}{\pi } ( take the square root of both sides )

d = \sqrt{\frac{4A}{\pi } }

7 0
3 years ago
What is the slope of the line in the graph?
Sedbober [7]
<h3>Answer:   1</h3>

========================================================

Explanation:

Pick any two points you want from the blue line. I'll pick (0,1) and (1,2)

Apply the slope formula to those points

m = (y2-y1)/(x2-x1)

m = (2-1)/(1-0)

m = 1/1

m = 1

The slope is 1.

Notice how if we're at (0,1), then we move up 1 and over to the right 1 to arrive at (1,2).

slope = rise/run = 1/1

rise = 1, run = 1

6 0
3 years ago
Read 2 more answers
6. Evaluate the expression for the value of the variable. 1/3x + 5 x = -6
taurus [48]

Answer:

\frac{1}{3} x + 5x =  - 6 \\  \frac{16}{3} x =  - 6 \\ x = \frac{ - 6}{ \frac{16}{3} }  \\ x =  \frac{ - 9}{8}

5 0
3 years ago
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