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3 years ago

HELP ME PLEASE FOR BRAINLESTT!!

Mathematics

2 answers:

timurjin [86]3 years ago

7 0

Answer:

See below.

Step-by-step explanation:

The answer is D. The solution is when the two lines intersect, or are satisfied.

-hope it helps

murzikaleks [220]3 years ago

5 0

Answer:

The solution of a system of linear equations is:

D. The values of the variables that satisfy both equations.

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String A is 3 5/6 meters long. String B is 2 1/4 meters long. What’s the total length of both strings?

dalvyx [7]

Answer:

The total length of the two strings is $\frac{73}{12}$ meters

Explanation:

Before beginning, remember the following:

$a\frac{b}{c}=\frac{ac+b}{c}$

Now, for the given problem:

We are given that:

Length of string A = $3\frac{5}{6}=\frac{23}{6}$ meters

Length of string B = $2\frac{1}{4}=\frac{9}{4}$ meters

To get their sum, we follow these steps:

a. Make the denominator for the two fractions the same

b. Add the numerators

c. Simplify

This is done as follows:

For the given fractions, the common denominator will be 4×6 = 24

Therefore:

String A = $\frac{92}{24}$ m and String B = $\frac{54}{24}$ m

Now, we add:

$\frac{92}{24}+\frac{54}{24}=\frac{92+54}{24}=\frac{146}{24}$

Finally, we simplify:

$\frac{146}{24}=\frac{73}{12}$ obtained by dividing both numerator and denominator by 2

Hope this helps :)

8 0

3 years ago

Read 2 more answers

An instructor gives her class a set of 10 problems with the information that the final exam will consist of a random selection o

marishachu [46]

<h2>Answer with explanation:</h2>

It is given that An instructor gives her class a set of 10 problems.

The final exam will consist of a random selection of 5 of them.

A student has figured out how to do 7 of the 10 problems.

We know that the probability of an event is defined as the ratio of number of favorable outcomes to the total number of outcomes.

The probability that he will answer all the 5 problems correctly is:

given by:

$\dfrac{7_C_5}{{10}_C_5}$

Since he may chose 5 questions out of 7 questions that a student knows how to do and total outcomes is the selection of 5 questions from the total 10 questions.

Hence, on solving we get:

$=\dfrac{\dfrac{7!}{5!\times (7-5)!}}{\dfrac{10!}{5!\times (10-5)!}}\\\\\\\\=\dfrac{\dfrac{7!}{5!\times 2!}}{\dfrac{10!}{5!\times 5!}}$

On further solving we get:

Probability=0.083

The probability that he will answer at least four correctly is given by:

$\dfrac{7_C_4\times 3_C_1+7_C_5}{10_C_5}$

( Since, he may answer correctly four or five questions)

( If he answer four answers correctly, this means he choose 4 questions from 7 questions and 1 from the remaining.

and if he answers five answer correctly then he choose it from the 7 questions a student know)

Hence, on solving we get:

$Probability=\dfrac{2}{9}\\\\\\Probability=0.222$

Hence, we get Probability= 0.222

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3 years ago

Is this table proportional or non-proportional? Explain your reasoning to why this table is proportional or non-proportional.

dolphi86 [110]

Non proportional hope this helps :)

8 0

3 years ago

Help fast !!!!!!!!!!!

Semmy [17]

Answer:

tbh I think its the middle one

Step-by-step explanation:

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TiliK225 [7]

I think the it would be some like y-8

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3 years ago

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