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torisob [31]
2 years ago
13

What number needs to be subtracted from both sides of the equation 40 = 25 + x in order to isolate the variable and solve for x?

Mathematics
1 answer:
SOVA2 [1]2 years ago
3 0

Answer:

x = 15

Step-by-step explanation:

As given, the equation 40 = 25 + x

As on the R.H.S of the equation, there is one constant and a variable x

As to isolate the variable we have to subtract the same constant so that that constant gives 0.

As we have the constant value 25

So, subtract 25 from both side of the equation, we get

40 - 25 = 25 + x - 25

⇒15 = x

∴ we get

x = 15

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Find the measure of the arc indicated
exis [7]

Answer:

Step-by-step explanation:

Angle GPE is an inscribed angle.  It intercepts arc GFE.  The rule for inscribed angles and the arcs they intercept is that the angle is half the measure of the arc it intercepts.  Angle P is 96, so that means that arc GFE is twice that.  2(96) = 192.  We have arc FG as 92, so that means that arc FE is 192 - 92 which is 100 degrees.  The third choice down.

4 0
2 years ago
A circle has a radius of 18.2 cm. Find the
pishuonlain [190]

Answer:

54.6cm

Step-by-step explanation:

Arc length = radius * central angle

= 18.2*3

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6 0
2 years ago
Suppose a researcher is testing the hypothesis Upper H 0​: pequals0.4 versus Upper H 1​: pless than0.4 and she finds the​ P-valu
andre [41]

Answer:

D. If the​ P-value for a particular test statistic is 0.33​, she expects results at least as extreme as the test statistic in exactly 33 of 100 samples if the null hypothesis is true.

D. Since this event is not​ unusual, she will not reject the null hypothesis.

Step-by-step explanation:

Hello!

You have the following hypothesis:

H₀: ρ = 0.4

H₁: ρ < 0.4

Calculated p-value: 0.33

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

In this case, you have a 33% chance of getting a value as extreme as the statistic value if the null hypothesis is true. In other words, you would expect results as extreme as the calculated statistic in 33 about 100 samples if the null hypothesis is true.

You didn't exactly specify a level of significance for the test, so, I'll use the most common one to make a decision: α: 0.05

Remember:

If p-value ≤ α, then you reject the null hypothesis.

If p-value > α, then you do not reject the null hypothesis.

Since 0.33 > 0.05 then I'll support the null hypothesis.

I hope it helps!

3 0
3 years ago
Please please help please
masha68 [24]

Answer:

4 times larger

Step-by-step explanation:

3 0
2 years ago
How can you determine is a math question is an equation or an expression?
Tatiana [17]

An equation will have an answer at the end like an equal sign. (Ex; 20+20=40)

An expression will NOT have an answer. (Ex; 20+20)

5 0
3 years ago
Read 2 more answers
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