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3 years ago

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A store sells 2 1/4 pounds of mulch for every 1 1/2 pounds of gravel sold. The store sells 180 pounds of mulch and gravel combin

ed. How many pounds of each item did the store sell?

1 answer:

erma4kov [3.2K]3 years ago

4 0

Answer:

7.75

Step-by-step explanation:

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Multiply and simplify the following expression -4√15 x(-√3)

larisa [96]

Answer:

$\large\boxed{12\sqrt5}$

Step-by-step explanation:

$\text{Use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\-----------------\\\\-4\sqrt{15}\cdot\left(-\sqrt3\right)=4\sqrt{(15)(3)}=4\sqrt{5\cdot3\cdot3}=4\sqrt5\cdot\sqrt9\\\\=4\sqrt5\cdot3=12\sqrt5$

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3 years ago

I can’t do math help

marta [7]

Answer:

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Step-by-step explanation:

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3 years ago

Find the GCF of 56 and 46<br> a)8<br> b)2<br> c)10

Elis [28]

Answer: 2

8: 8,16,24,32,40,48,56,64

2: 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60

10: 10,20,30,40,50,60,70,80

As you can see when skip counting 2's you have the numbers 56 and 46. Therefore the GCF of 56 and 46 is 2.

4 0

3 years ago

Read 2 more answers

Based on concerns raised by his preliminary research, the biologist decides to collect and examine 150 frogs.

Delicious77 [7]

Answer:

Answered and explained below

Step-by-step explanation:

A) We are told that frequency of the trait is still 1 in 8. Thus, population proportion; p = 1/8 = 0.125

Sample size; n = 150

Formula for mean is;

μ = np

μ = 150 × 0.125

μ = 18.75

Formula for standard deviation is;

σ = √(np(1 - p))

σ = √(150 × 0.125(1 - 0.125))

σ = √16.40625

σ = 4.05

B) usually, when np ≥ 10 , we make use of normal distribution.

I'm this case, it is 18.75 which is greater than 10.

Thus,we can use a normal model to approximate the distribution.

C) we are told that he found the trait in 22 of the frogs.

Thus;

Proportion is now; 22/150 = 0.1467

This is a higher probability that the initial one of 0.125 and we can say that the trait has become more common.

6 0

3 years ago

Which expression is equivalent to (4(5^3)1/2?

Feliz [49]

Answer:

$10\sqrt{5}$

Step-by-step explanation:

In this problem, we are given expression in exponent form and we have to simplify the expression.

The expression is $[4(5^{3} )]^{\frac{1}{2} }$

Now, we know that $5^{3} = 5 \times 5 \times 5 = 125$

So, $4(5^{3} ) = 4 \times 125 = 500$

Now, 500 can be written as 100 × 5 = 10² × 5

Therefore, $[4(5^{3} )]^{\frac{1}{2} } = (500)^{\frac{1}{2} } = 10\sqrt{5}$ {Since 500 = 100 × 5 = 10² × 5} (Answer)

6 0

3 years ago