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2 years ago

Find the second consecutive even integer if the sum of the first and the third is 40.

Mathematics

1 answer:

alexandr402 [8]2 years ago

6 0

Answer:

Step-by-step explanation:

19,20,21

the second even number is 20

19+21=40

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Michelle drew a scale drawing of a swimming pool she used the scale 14 millimeters 5 meters in the drawing the pool is 42 millim

Lera25 [3.4K]

EXPLANATION

Let's see the facts:

The scale is---> 14 milimeters ----> 5 meters

Width = 42 milimeters

Applying the unitary method, the actual width of the pool is:

$Actual_{}width=42\text{ mm}\cdot\frac{5m}{14\text{ mm}}=15m$

The width of the pool is 15m

6 0

4 months ago

the bottom of a ladder must be placed 10 feet from a building. The ladder is 26 feet. How far above the ground does the ladder t

Sauron [17]

Answer:

<em>The ladder touches the wall at 24 feet from the ground.</em>

Step-by-step explanation:

The wall of the building, the ground, and the ladder form a right triangle, whose longer side is the length of the ladder.

In any right triangle, we can apply Pythagora's theorem to find any missing side length.

The ladder is 26 feet in length, the distance from the bottom of the ladder and the building is 10 feet. Calling H to the distance above the ground where the ladder touches the wall, then:

$26^2=10^2+H^2$

Calculating:

$676=100+H^2$

Solving:

$H^2=676-100$

$H^2=576$

$H=\sqrt{576}$

H=24 feet

The ladder touches the wall at 24 feet from the ground.

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2 years ago

Jerry is trying to earn two hundred nine dollars for some new video game. If he's charges forty-seven dollars to mow a lawn, how

Ghella [55]

47x > = 209....with x being number of lawns mowed
x > = 209 / 47
x > = 4.45....so he would have to mow at least 4.45 lawns.....but if u cant mow part of the lawn and u have to mow the entire lawn, the it would be at least 5 full lawns

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2 years ago

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A biker’s speed is 1.5 times faster than a walker’s speed. They start moving simultaneously in the same direction from the same

worty [1.4K]

Let the walker’s speed be W, then the biker’s is W+1.5W=2.5W. Difference in speed is 1.5W. Distance=speed times time, so 12.5=1.5W×1.5=2.25W, and W=12.5/2.25=1250/225=50/9=5.56 mph. The biker’s speed is 2.5W=125/9=13.89 mph to 2 Dec places.
(Note: “1.5 times faster than a walker’s speed” could not reasonably mean the biker’s speed=1.5W because this would give W=16.67 mph, which is very fast for a runner, let alone a walker (!), and a biker’s speed of 25mph.)

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2 years ago

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7+3√5/3+√5 - 7-3√5/3-√5

Irina-Kira [14]

Answer:

Step-by-step explanation:

We can write the equation in a simpler form so it doesn't look like a mess of numbers:

$7+\frac{3\sqrt{5}}{3}+\sqrt{5} -7 -\frac{3\sqrt{5}}{3}-\sqrt{5}$

Because we are just adding three terms together and then subtracting those exact terms, we have the answer as 0.

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2 years ago