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dem82 [27]
2 years ago
9

Please can u do Evaluate − √81

Mathematics
2 answers:
Ahat [919]2 years ago
6 0

Answer:

-9

Step-by-step explanation:

hope this helps

Scilla [17]2 years ago
4 0

Answer:

-9

Step-by-step explanation:

-\sqrt{81} = -x^2\\-\sqrt{81} = -9^2

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Help pls need help before my daughter pls and thank you ​
WITCHER [35]

Answer:

I would say line d

Step-by-step explanation:

its the line of best fit (has the most points going through it)

8 0
3 years ago
Find two numbers whose ratios is 3 to 5 and whose sum is 88​
Tomtit [17]

Answer:

33 and 55

Step-by-step explanation:

\frac{x}{y}: \frac{3}{5}

x + y = 88

3 + 5 = 8

y(\frac{x}{y}): y(\frac{3}{5})

x= \frac{3}{5}y

y+\frac{3}{5}y=88

\frac{8y}{5}=88

5(\frac{8y}{5})=5(88)

8y = 440

8y ÷ 8 = 440 ÷ 8

y = 55

x + y = 88

x + 55 = 88

x + 55 - 55 = 88 - 55

x = 33

5 0
2 years ago
A group of 16 people is choosing a chairperson and vice-chairperson. They put all 16 people's names into a hat. The first name d
Strike441 [17]

Answer:

2 in 16

Step-by-step explanation:

6 0
2 years ago
A 20 foot ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the
Liono4ka [1.6K]

Answer:

The wall is 10.5 foot far from the bottom of the ladder.

Step-by-step explanation:

Given:

Height of the ladder leaning against wall (Hypotenuse) = 20 foot.

Height from where the window is above from the ground (Leg1) = 17 feet.

To find the distance of the bottom of the ladder far from the wall (Leg2) = ?

Now, by using the pythagorean theorem:

Hypotenuse^{2} = (Leg1)^{2} + (Leg2)^{2}

20^{2} =17^{2}+(Leg2) ^{2}

400=289+(Leg2)^{2}

400-289=(Leg2)^{2}

111=(Leg2)^{2}

by squaring both sides

Leg2=10.535

10.535 foot rounded nearest tenth is 10.5 foot.

Therefore, the wall is 10.5 foot far from the bottom of the ladder.  

6 0
3 years ago
Write down and simplify the following algebraic expressions. The sum of −3x+5 and 7−4x is subtracted from 5x+17.
andriy [413]
Sum of the first two is:
-3x+5+7-4x = -7x+12
That subtracted from 5x+17:
5x+17-(-7x+12) = 12x+5
5 0
3 years ago
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