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Luden [163]
3 years ago
8

Daniel guesses that he scored a 95 on his science test.His actual score is 91. What is the percent error in Daniel's guess? Roun

d to the nearest tenth of a percent.
Mathematics
1 answer:
Kamila [148]3 years ago
3 0
1) Formula for the percent of error:

                               [estimated measure - real measure]
Percent of error = ---------------------------------------------------- x 100
                                            real measure

2) Calculations:

                             [95 - 91]
Percent error =  --------------- x 100 = 4.4 %
                                 91

Answer: 4.4%
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gavmur [86]
Let, the amount she earned = x
Then, x * 40% = 50
x * 0.40 = 50
x = 50 / 0.40
x = 125

In short, Your Answer would be Option C

Hope this helps!
8 0
3 years ago
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Which of the following sets of numbers could represent the three sides of a right triangle
MissTica

Answer:

The pythagorean theorum states that the longest side of the right triangle (hypotenuse), squared, is equal to the sum of the squares of the 2 other sides

Its expressed as so:

c^2=a^2+b^2

Therefore,

{36, 48, 60} is correct

Step-by-step explanation:

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3 years ago
Specify the set of all integers that are congruent to 5 (mod 7) using (a) the roster method and (b) set-builder notation
IrinaVladis [17]

Answer:

(a) A = {... -23, -16, -9, -2, 5, 12, 19, 26, ....}

(b) A = {x\in Z: x = 5 - 7t,\ t\in Z}

Solution:

For two integers x and y to be congruent, we know that:

If 't' divides y - x, we say that x is congruent to y modulo t, written x ≡ y mod t.

Now,

In roster form, we include each element in the representation of the set.

In set-builder form, we use mathematical notation and properties of the elements of the set.

Now,

As per the question;

(a) To represent all the integers congruent to  5 (mod 7) by roaster method of a set A (say):

where

x\in Z such that

x ≡ 5 (mod 7)

Then

A = {... -23, -16, -9, -2, 5, 12, 19, 26, ....}

(b) In set builder form,

A = {x\in Z: x = 5 - 7t,\ t\in Z}

4 0
3 years ago
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aliina [53]

Answer:

\displaystyle 14

Step-by-step explanation:

we are given two temperature

4 degrees and -10 degrees

since it says to figure out the changed

substract

\displaystyle 4 - ( - 10)

remove parentheses and change its sign

\displaystyle 4  + 10

simplify addition:

\displaystyle 14

and we are done!

4 0
3 years ago
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Which inequality is true
sukhopar [10]

Answer:

A

Step-by-step explanation:

\pi≈3.14

3x3.14=9.42

9.42>9

8 0
3 years ago
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