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3 years ago

1+s=3 as a one step equation

2 answers:

6 0

One step is the subtraction property of equality, what you subtract from one side you subtract from the other side.
1+s=3
-1+1+s=3-1
s=2

lesya692 [45]3 years ago

4 0

Th answer is 2 because you subtract 1 from 3

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The sum of the two numbers is 40 and the difference is 6. What are the numbers?

natita [175]

Answer:

17 + 23 = 40

23 - 17 = 6 the other person did it right.

6 0

3 years ago

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The temperature is-2 degrees Celsius. If the temperature rises by 15 degrees Celsius, what is the new temperature?

attashe74 [19]

Answer:13

Step-by-step explanation:

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3 years ago

A guy wire 30 ft long supports an antenna at a point that is 24 ft above the base of the antenna.

GalinKa [24]

Use Pythagorean Theorem
c2 = a2 + b2
152 = a2 + 12
a2 = 152 - 122
=225 - 144 = 81
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2 years ago

How do I solve this problem??

Luda [366]

Answer:

3/10 m^2

Step-by-step explanation:

To calculate area of a triangle we multiply height with base and then divide that by 2

2/5 × 3/2 ÷ 2 = 3/10

3 0

3 years ago

Phonics is an instructional method in which children are taught to connect sounds with letters or groups of letters. A sample of

natali 33 [55]

Answer:

98% confidence interval: (29.25,38.87)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 34.06

Sample size, n = 134

Sample standard deviation, s = 23.83

a) 98% confidence interval

$\bar{x} \pm z_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.02} = \pm 2.33$

$34.06 \pm 2.33(\frac{23.83}{\sqrt{133}} ) = 34.06 \pm 4.81 = (29.25,38.87)$

b) If a 95% confidence interval were constructed with these data, confidence interval would be narrower as the confidence level is decreasing as compared to 98%

c) If a sample of 150 students had been studied, the width of confidence interval will decrease as the sample size increases.

8 0

3 years ago