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2 years ago

Explain why x squared = 16 has two solutions. What are the solutions.

1 answer:

3 0

A negative number * another negative number gives a positive value

A positive number * another positive number also gives a positive value

The solutions are -4, 4

Hope this helps :)

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Umnica [9.8K]

Answer: 17x+9

Step-by-step explanation:

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3 years ago

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The Mississippi River flows at a rate of 2 miles per hour. If Eduardo floats

madam [21]

Answer:

11 1/3 miles

Step-by-step explanation:

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3 years ago

Factor 26r3s + 52r5 – 39r2s4.

algol [13]

Answer:

13r²(2rs + 4r³ - 3s⁴)

Step-by-step explanation:

In equation 26r³s + 52r⁵ - 39r²s⁴;

The GCF of 26, 52, and 39 = 13

The GCF of r³, r⁵ and r² = r²

The GCF of s, (no "s"), and s⁴ = no "s" (Since one of the number doesn't have "s")

Now we can factor out 13r² from all three expressions;

26r³s + 52r⁵ - 39r²s⁴

=> <em>13r²(2rs) + 13r²(4r³) - 13r²(3s⁴)</em>

To factor it all together;

Hope this helps!

7 0

3 years ago

A box of oatmeal has the shape of a cylinder. The box is 7 inches high and has a radius of 2 inches. What is the volume of the b

ICE Princess25 [194]

Answer:

87.96

Step-by-step explanation:

The formula for a cylinder. (Well to find the volume anyway) Is

V = $V = \pi r^2$

Plug in your values and you will get the answer 87.96.

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3 years ago

The number of books borrowed from a library each week follows a normal distribution. When a sample is taken for several weeks, t

Marat540 [252]

$\mathbb P(X>250)=\mathbb P\left(\dfrac{X-190}{30}>\dfrac{250-190}{30}\right)=\mathbb P(Z>2)\approx0.0228$

Or, if you're familiar with the empirical rule and the basic properties of the normal distribution, you can use the fact that approximately $95/%$ of the distribution lies within two standard deviations of the mean, or

$\mathbb P(|Z|$

which means about $5\%$ of the distribution lies outside this interval, or

$\mathbb P((-22))\approx0.05$

Because the distribution is symmetric, you have

$\mathbb P(-22)$
$\implies \mathbb P((-22))=\mathbb P(-22)=2\mathbb P(Z>2)\approx0.05$
$\implies \mathbb P(Z>2)\approx 0.025$

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3 years ago

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