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2 years ago

Please help, only the answer is required

Mathematics

1 answer:

Romashka [77]2 years ago

6 0

Answer:

Infinitely many solutions.

Step-by-step explanation:

5x-8y=-11

-10x+16y=22

---------------------

2(5x-8y)=2(-11)

-10x+16y=22

---------------------

10x-16y=-22

-10x+16y=22

---------------------

0+0=0

infinitely many solutions

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Find the area of this circle. Use 3 for TT.<br> A = πr²<br> 3 ft<br> [?] ft²

san4es73 [151]

Answer:

27 ft²

Step-by-step explanation:

Hello!

We can use the formula given: $A = \pi r^2$

<h3>Solve</h3>

Plug in 3 for r and 3 for π.

$A = \pi r^2$
$A = 3(3)^2$
$A = 3(9)$
$A = 27$

The area of the circle is 27 ft².

8 0

1 year ago

Ms. Johnston's students counted by fives. The first person said, "Five." The next said, "Ten"; the next "15." They went all the

Tcecarenko [31]

Answer:

20 students.

Step-by-step explanation:

The <u>first </u>person said 5 (which is 5 x 1), the <u>second </u>person said 10 ( which is 5 x2)... we see that this is a arithmetic sequence where the first term is 5 and the nth term is 100. We know that 100 = 5 x 20, therefore, the number of students that counted all the way up to 100 was 20 and Bobby was wrong.

3 0

2 years ago

The length of the Earth’s equator is about 40,000 km, and the Earth’s diameter is 8/25 the length of the equator. What is the di

o-na [289]

Answer:

See Below:

Step-by-step explanation:

40,000*8/25= the diameter, because the diameter is 8/25 of the equator which is 40000

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8 0

3 years ago