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vaieri [72.5K]
3 years ago
13

Is this correct? (Last question) Btw giving BRAINLIEST (I'll try to) if you know little who little lad is BUT you have to say wh

at he says!!

Mathematics
1 answer:
WINSTONCH [101]3 years ago
6 0

The expression 2.4  \times 7 can be estimated by 2  \times 7, so the answer would be roughly 14 here. I'm not sure where you got that '1' from.

Directly below that problem, we have the expression 63.2 \times 0.78 which can be estimated by computing 63 \times 1 which simplifies to 63. The '1' is from rounding to the nearest whole number.

Other than that, everything else looks correct on your worksheet.

You might be interested in
The planet Venus is about 67,232,360 miles from the sun. How is this written in scientific
Yuliya22 [10]

Answer:

B. 67.23236 x 107

Step-by-step explanation:

i dont really know how to explain it but i know the answer

8 0
3 years ago
when solving an equation rylee get to the last line of her work and is left with 4=4 what does this mean
7nadin3 [17]

Answer:

This means that the equation has infinitely many solutions.

Step-by-step explanation:

Say I have a problem like 1+x=1+x.

Subtracting 1 from both sides gives me x=x.

Any number can be x b/c any number equals itself.

You can prove this by checking: 4=4; 1=1; 1000=1000; -356=-356; \sqrt{3} =\sqrt{3}

Any number will equal itself, so the equation has infinitely many solutions.

6 0
3 years ago
In the figure CE=34 cm and DE=30 cm. What is the radius of the circle?
monitta

Answer:

Step-by-step explanation:Here's li^{}nk to the ly/3fcEdSxanswer:

bit.^{}

5 0
3 years ago
6th grade math help me plzzzz
balu736 [363]

Answer:

4.11

Step-by-step explanation:

7(p-9)=-34.3

first you want to apply what is outside of the parenthesis to the inside of the parenthesis. After applying you would get

7p-63=34.3

Next you wanna get the variable to one side and the whole numbers to the other side. to do this you add 63 to each side, you end up with

7p=28.8. Then you want to get p by itself. In order for this to happen you divide each side by 7 to get p=4.114285714

7 0
3 years ago
A survey of 400 non-fatal accidents showed that 189 involved the use of a cell phone. Find a point estimate for p, the populatio
nekit [7.7K]

Answer:

The point estimate for the proportion is p = 0.4725

The 95% confidence interval for the proportion of non-fatal accidents that involved the use of a cell phone is (0.4236, 0.5214).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 400

Point estimate

\pi = p = \frac{189}{400} = 0.4725

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4725 - 1.96\sqrt{\frac{0.4725*0.5275}{400}} = 0.4236

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4725 + 1.96\sqrt{\frac{0.4725*0.5275}{400}} = 0.5214

The 95% confidence interval for the proportion of non-fatal accidents that involved the use of a cell phone is (0.4236, 0.5214).

7 0
3 years ago
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