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3 years ago

Bài 2: Tìm x biết

Mathematics

1 answer:

Svetllana [295]3 years ago

3 0

Answer:

Step-by-step explanation:

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Determined be whether the solution to 32=6(1)-4

igomit [66]

Answer:

false

Step-by-step explanation:

32 = 6(1) - 4

According to PEMDAS (parentheses/exponents | multiplication/division | additions/subtraction), we should multiply first.

32 = 6 - 4

Now let's subtract.

32 = 2

This statement is incorrect; therefore it is not true.

8 0

2 years ago

Read 2 more answers

WE ARE GONNA START A RIOT!! as you know, I wasted 310 points on an essay, counting, and all these bots do is put LINKS and do no

-Dominant- [34]

Answer:

ME LOL

Step-by-step explanation:

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2 years ago

Use the GCF to find a new sum for 54+48.<br> _ ( _ + _ )

Maru [420]

Answer: GCF is 6

Step-by-step explanation:

Sort them out on paper

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3 years ago

Geometric mean. Find x, y, and z. Show work please.

Aleks [24]

Answer:

Step-by-step explanation:

i dont know the rest but the answer to x is 15 because the formula to that triangle is A^2+B^2=C^2

A=12

B=9

144(12^2) and 81 (9^2) add

225

find square root

z=15

4 0

3 years ago

10# A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like

ella [17]

ANSWER:

104

STEP-BY-STEP EXPLANATION:

Given:

Standard deviation (σ) = 700

Confidence level = 95%

Mean error (Eμ) = 135

We have for a confidence level of 95%:

$\begin{gathered} \alpha=100\%-95\%=5\%=0.05 \\ \\ \alpha\text{/2}=\frac{0.05}{2}=0.025 \\ \\ \text{ The corresponding Z value for \alpha/2 = 0.025 is as follows:} \\ \\ Z_{\alpha\text{/2}}=1.96 \end{gathered}$

Now, we calculate the minimum value of the sample size as follows:

$\begin{gathered} n=\left(\frac{Z_{\alpha\text{/2}}\cdot\sigma}{E}\right)^2 \\ \\ \text{ We replacing:} \\ \\ \:n=\left(\frac{1.96\cdot 700}{135}\right)^2 \\ \\ \:n=103.2858\cong104 \end{gathered}$

The minimum sample size needed is 104

3 0

1 year ago