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Lelu [443]
3 years ago
12

-4.5[2x-(0.5-1.4)] simplify please helpp

Mathematics
1 answer:
Radda [10]3 years ago
7 0
We need to follow PEMDAS.

Parentheses is first.

0.5 - 1.4 = -0.9

Now, we need to re-write our expression.

-4.5 [ 2x - 0.9]

Apply the distributive property.

-4.5*2x - (-4.5 *0.9)
-9x - (-4.5)

-9x + 4.05

Final answer:    
-9x + 4.05
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Can you help me with number 4 A-D plz
Flauer [41]
You have to label it but try 1 and 1/4, -1 and 1/4,2, and -2
5 0
3 years ago
Solve the equation. 33 = p – 6.71<br> A. –39.71 <br> B. –26.29 <br> C. 39.71 <br> D. 26.29
jeka57 [31]

<u>Answer</u>

C. 39.71


<u>Explanation</u>

33 = p - 6.71

The first step is to make the like terms to be on the same side.

Add 6.71 on both sides of the eqution

33 +  6.71 = p - 6.71 + 6.71

39.71 = p


∴ p = 39.71

4 0
3 years ago
Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh
s344n2d4d5 [400]

Answer: The point estimate for the mean weight of all spawning Chinook salmon in the Columbia River is the mean weight from your sample (\overline{x}) = 31.2 pounds .

Step-by-step explanation:

The weights of spawning Chinook salmon in the Columbia river are normally distributed.

Given :  The mean weight from your sample is 31.2 pounds with a standard deviation of 4.4 pounds.

The point estimate for the mean (\mu) weight of all spawning Chinook salmon in the Columbia River is the mean weight from your sample (\overline{x}) i.e. is 31.2 pounds because the best point estimate for population mean is the sample mean. [in normal distribution]

8 0
3 years ago
A factory produces 42,000 computer monitors per day. The manager of the factory claims that fewer than 660 defective computer mo
Oksana_A [137]

Answer:

<h2> The manager's claim is likely to be true.</h2>

Step-by-step explanation:

We are given that the factory produces  42,000  computer monitors per day

And the claim is of this amount produces fewer than 660 are defective.

a random sample shows that of 240 monitors 2 are defective

to verify the factory managers claim we need to know how many 240s are there in 42000

=42000/240= 175

Since each 240 will give 2 defective monitors

175 will give= 175*2= 350

350 is less than 660 hence the managers claim is correct

5 0
3 years ago
5 5/6 + 4 2/9 in simplest form
aksik [14]
Exact Form:
181/18


Decimal Form:
10.05

Mixed Number Form:
10 1/18
3 0
4 years ago
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