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3 years ago

1 MINUTE!!!

Mathematics

2 answers:

iris [78.8K]3 years ago

6 0

Answer:

About 9.38

Step-by-step explanation:

Since the $\sqrt{88}$ is between the $\sqrt{81}$ and the $\sqrt{100}$ which simplified is 9 and 10, you just need to guess and check. Eventually you'll get about 9.38 (I used Google cause I was lazy) And if it isn't between the numbers 9 & 10, it's wrong.

aleksley [76]3 years ago

5 0

Answer:

The answer is 2√22.

Step-by-step explanation:

You have to elaborate it by finding the common factors :

88 = 1×88

88 = 2×44

88 = 4×22

88 = 8×11

Next, you have to find the perfect square. In the factors above, 4 is the perfect square then, you can square root it :

$\sqrt{88}$

$= \sqrt{4 \times 22}$

$= \sqrt{4} \times \sqrt{22}$

$= 2 \times \sqrt{22}$

$= 2 \sqrt{22}$

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For which equation is y=7 a solution

irina1246 [14]

The answer would be B.

6 0

3 years ago

Find the missing length of the triangle.

allsm [11]

Hey there!

Solve using pythagoras theorem (it's given that is triangle is right angled. Pythagoras theorem only works in the case of right triangles) ⇨ Hypotenuse² = Base² + Altitude ²

Here,

Base = 9 mm

Hypotenuse = 15 mm

Altitude = b

Hypotenuse² = Base² + Altitude ²

15² = 9² + b²

225 = 81 + b²

225 - 81 = b²

144 = b²

√144 = b

12 mm = b

Hope it helps ya!

3 0

3 years ago

If the altitude is √7, find the volume. 36√7 cu. units 18√7 cu. units 12√7 cu. units

rosijanka [135]

Answer:

$Volume = 12\sqrt{7}$ cubic units

Step-by-step explanation:

Volume of the square pyramid is given as ⅓*area of base*height of pyramid.

Where,

Area of base = 6*6 = 36

Height of pyramid = altitude = $\sqrt{7}$ units

Plug the values into the formula to find volume.

$Volume = \frac{1}{3}*36*\sqrt{7}$

$Volume = 12*\sqrt{7}$

$Volume = 12\sqrt{7}$ cubic units

8 0

3 years ago

What is the hydronium ion (H3O+) concentration in milk if it has a pH of 8.2?

valkas [14]

The hydronium ion is H₃O⁺ and its concentration is equivalent to the H⁺ ion concentration. The H⁺ ion concentration is given by:

pH = -log[H⁺]
[H⁺] = 10^(-8.2)
[H⁺] = 6.31 x 10⁻⁹ mole/dm³

The hydronium ion concentration is 6.31 x 10⁻⁹ mole/dm³

5 0

3 years ago

-2(3x+2) is greater than or equal to -6x-4

olchik [2.2K]

The inequality would look like this:

-2 (3x + 2) $\geq$ -6x-4

To begin to find the solutions, distribute the -2 throughout the set of parenthesis on the left side of the inequality by multiplying the -2 by each term in the set of parenthesis

-2 x 3x = -6x
-2 x 2 = -4

-6x -4 $\geq$ -6x-4

Begin to isolate x by performing the opposite operation of adding -6x on both sides of the inequality

0x -4 $\geq$ -4

Next perform the opposite operation by adding 4 on both sides of the inequality

0x $\geq$ 0

Now, I'm not exactly understanding how that can possibly work. So, I guess I didn't really help you. But add a comment so that we can talk about the problem :)

8 0

3 years ago