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Alexxx [7]
3 years ago
7

Complete the solution of the equation. find the value of y when equals -1. -2x-5y=-13

Mathematics
1 answer:
KiRa [710]3 years ago
3 0
<span>-2x-5y=-13
when x = -1

</span><span>-2x-5y=-13
</span><span>-2(-1)-5y=-13
2 - 5y = -13
-5y = = -15
y = 3</span>
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A group of students went on a field trip. The students were divided into 6 buses and each bus had less than 52 students. How man
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A maximum of 306

Step-by-step explanation:

You can estimate that since each bus had less than 52 students, that 51 were on each bus. 51 times 6=306

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How can we simplify radicals involving negative values?
RSB [31]

Answer:

using imaginary numbers

Step-by-step explanation:

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3 years ago
Which of the following relations is a function?
MrMuchimi

Answer:

<em>A. (1,4), (-5, 2), (7, 1), (-8, 2)</em>

Step-by-step explanation:

<u>Definition of a Function</u>

A function is a relation between an input and an output set of values with the condition that every element in the input set relates only to one element in the output set.

From the four options presented in the question, we must select the only one that doesn't repeat the value for x and has a different value of y.

For example, the set

B. (1,4), (-5, 6), (1, 3), (-8, 2) is not a function because the input value of 1 has two different output values

C. (1,0), (-5,3), (7, 1), (-5,5) is not a function either because the input value of -5 has two different output values

The correct choice is:

A. (1,4), (-5, 2), (7, 1), (-8, 2)

6 0
3 years ago
E<br> B<br> 30<br> 24<br> 25<br> 20<br> А<br> 15<br> с<br> D<br> 18<br> F<br> The scale factor is
Finger [1]

Answer:

5:6

Step-by-step explanation:

20/4=5

24/4=6

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sorry if wrong

3 0
3 years ago
Suppose that in a certain county 37% of voters are registered as Democrats, 29% as Republicans, 7% as Green party, and the rest
Fantom [35]

Answer:

0.66

Step-by-step explanation:

GIVEN: Suppose that in a certain county 37\% of voters are registered as Democrats, 29\% as Republicans, 7\% as Green party, and the rest are considered Independents. You conduct a poll by calling registered voters in the county at random.

TO FIND: Probability that the first call will be to either a Democrat or a Republican.

SOLUTION:

Lets total population of county be 100x.

voters registered as Democrats =37\%=\frac{37}{100}\times100x

                                                     =37x

voters registered as Republicans =29\%=\frac{29}{100}\times100x

                                                       =29x

voters registered as Green party =7\%=\frac{7}{100}\times100x

                                                       =7x

Probability that first call will be to Democrats P(A)=\frac{\text{total democrats}}{\text{total voters}}

                                                                                    =\frac{37x}{100x}=0.37

Probability that first call will be to Republican P(B)=\frac{\text{total republicans}}{\text{total voters}}

                                                                                     =\frac{29x}{100x}=0.29

probability that the first call will be to either a Democrat or a Republican

=P(A)+P(B)

=0.37+0.29

=0.66

Hence the probability that the first call will be to either a Democrat or a Republican is 0.66

6 0
4 years ago
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