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3 years ago

What is the answer for 10.3(3)+9.5(4)=? +38.0

Mathematics

1 answer:

Vikki [24]3 years ago

4 0

multiply and add then subtract. steps are in the picture.

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Jaclyn estimates that the square root of 50 in the following way: √50 = 2√25 = 2*5 = 10

Harman [31]

Answer:

Jacklyn is wrong because

$\sqrt{50} \ne2 \sqrt{25 }$

Step-by-step explanation:

We have that :Jaclyn estimates that the square root of 50 in the following way:

$\sqrt{50} = 2 \sqrt{25}$

$\sqrt{50} = 2 \times 5$

$\sqrt{50} = 10$

Jacklyn is wrong because she made an error at

$\sqrt{50} = 2 \sqrt{25}$

The correct expression is

$\sqrt{50} = \sqrt{2 \times 25}$

This gives:

$\sqrt{50} = \sqrt{ 25} \times \sqrt{2}$

$\sqrt{50} =5 \sqrt{2}$

8 0

3 years ago

Need help someone plz help meh

lorasvet [3.4K]

Answer:

1. enlargement by 3 just multiply your x coordinate by 3 and get nine and leave your y just the same

2. just flip your coordinates around using inverse method and you have your answer

plz mark brainlist

6 0

3 years ago

Please help me I'm so done with math

Wewaii [24]

This problem is easy the correct choice for it will be B.

7 0

3 years ago

Find the distance between the pair of points. Give an exact answer and an approximation.

saveliy_v [14]

Answer:

Approx.3.6

Step-by-step explanation:

To find distance you need to use this formula:

d=sqrt of (x2-x1)+(y2-y1)

sqrt of(4-2) sqr+(10-7)sqr

sqrt of 2^2+3^2

sqrt of(4+9)

sqrt of (13)

approx.3.6

8 0

1 year ago

Read 2 more answers

Assume that adults have IQ scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equa

aleksley [76]

Answer: 0.5467

Step-by-step explanation:

We assume that the test scores for adults are normally distributed with

Mean : $\mu=100$

Standard deviation : $\sigma=20$

Sample size : = 50

Let x be the random variable that represents the IQ test scores for adults.

Z-score : $z=\dfrac{x-\mu}{\sigma}$

For x =85

$z=\dfrac{85-100}{20}\approx-0.75$

For x =115

$z=\dfrac{115-100}{20}\approx0.75$

By using standard normal distribution table , the probability the mean of the sample is between 95 and 105 :-

$P(85$

Hence, the probability that a randomly selected adult has an IQ between 85 and 115 =0.5467

7 0

3 years ago