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bija089 [108]
2 years ago
14

Alex has 21 marbles zach has 19 times as many marbles as alex how many marbles does zach have

Mathematics
1 answer:
Yuri [45]2 years ago
4 0
Zach has 399 marbles because 21*19 is equal to 399.
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Line CD contains points A (4, 6) and B (−2, 6). The slope of line CD is (4 points)
Zigmanuir [339]
It should be number two
4 0
2 years ago
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Solve for X: 2(x + 5) + 3(x – 2) = 29<br> please explain too! will mark brainliest
8090 [49]

Answer:

5

Step-by-step explanation:

2x+10+3x-6=29

5x+4=29

5x=25

x=5

3 0
3 years ago
The measure of central angle QRS is 8pi/9 radians. What is the area of the shaded sector?
Lapatulllka [165]

The area of the shaded sector must be 144π units².

<h3>What is the area of the circle?</h3>

The area of the circle is defined as the product of the pie and the square of the radius.

The area of the circle = \pi r^{2}

We know that the angle measurement of central angle QRS is less than π radians.

for r = 18 units

The area of the circle = π18² = 324π  units²

The area of ​​the half of a circle = 324π /2 = 162π units²

The area of ​​a quarter of a circle = 324π /4 = 81π  units²

so

The area of the shaded sector < 162π  units²

and

The area of the shaded sector > 81π  units²

Hence the answer must be 144π units²

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brainly.com/question/7116550

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5 0
1 year ago
−4x+3y=−2 I need the x and the y
azamat

Answer:

Step-by-step explanation: -4x subtract -4x and that would be 0 I don’t know the rest

7 0
2 years ago
One car model costs $12,000 and costs an average of $0.10 per mile to maintain. Another car model costs $14,000 and costs $0.08
BlackZzzverrR [31]
Answer:
See a solution process below:
Explanation:
Let's call the number of miles driven we are looking for
m
.
The the total cost of ownership for the first car model is:
12000
+
0.1
m
The the total cost of ownership for the second car model is:
14000
+
0.08
m
We can equate these two expressions and solve for
m
to find after how many miles the total cost of ownership is the same:
12000
+
0.1
m
=
14000
+
0.08
m
Next, we can subtract
12000
and
0.08
m
from each side of the equation to isolate the
m
term while keeping the equation balanced:
−
12000
+
12000
+
0.1
m
−
0.08
m
=
−
12000
+
14000
+
0.08
m
−
0.08
m
0
+
(
0.1
−
0.08
)
m
=
2000
+
0
0.02
m
=
2000
Now, we can divide each side of the equation by
0.02
to solve for
m
while keeping the equation balanced:
0.02
m
0.02
=
2000
0.02
0.02
m
0.02
=
100000
After 100,000 miles the total cost of ownership of the two cars would be the same.
3 0
3 years ago
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