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3 years ago

Find the sum. 5+ (-7)

Mathematics

1 answer:

vazorg [7]3 years ago

5 0

Answer:

-2

Step-by-step explanation:

5 + (-7)

5 - 7

-2

Please let me know if something's wrong!

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X+2=6x-18 Please help, i need to solve for x, and this is really confusing for me.

worty [1.4K]

You would start by adding the 18 to the 2 to give you 20. then you would subtract x from the 6x to give you 5x. then your equation should be 5x=20, then you divide 20 by 5 and that give you 4. So x would equal 4. x=4

8 0

3 years ago

Read 2 more answers

Can someone answer this question for me?

igomit [66]

Answer:

= 78

Step-by-step explanation:

x² + 5x - 6

when x = 7:

7² + 5*7 - 6

= 49 + 35 - 6

= 84 - 6

= 78

4 0

3 years ago

Which inequality is represented by the graph below?

Helga [31]

Answer:

your top choice is your answer with positive one on the front of the equation

5 0

3 years ago

Below, the two-way table is given for a class

Nataliya [291]

Answer:

2/7 = 29% (nearest percent)

Step-by-step explanation:

Calculate the totals and add them to the table:

$\begin{array}{| c | c | c | c | c | c |}\cline{1-6} & \sf Freshman & \sf Sophmore & \sf Juniors & \sf Seniors & \sf Total \\\cline{1-6} \sf Male & 4 & 6 & 2 & 2 & 14\\\cline{1-6} \sf Female & 3 & 4 & 6 & 3 & 16\\\cline{1-6} \sf Total & 7 & 10 & 8 & 5 & 30\\\cline{1-6}\end{array}$

Probability Formula

$\sf Probability\:of\:an\:event\:occurring = \dfrac{Number\:of\:ways\:it\:can\:occur}{Total\:number\:of\:possible\:outcomes}$

Let P(A) = probability that the student is a freshman

Let P(B) = probability that the student is male

Use the given table to calculate the probability that the student is male:

$\sf \implies P(B)=\dfrac{14}{30}$

And the probability that the student is a freshman and male:

$\implies \sf P(A \cap B)=\dfrac{4}{30}$

To find the probability that the student owns a credit card given that the they are a freshman, use the conditional probability formula:

Conditional Probability Formula

The probability of A given B is:

$\sf P(A|B)=\dfrac{P(A \cap B)}{P(B)}$

Substitute the found values into the formula:

$\implies \sf P(Freshman|Male)=\dfrac{\dfrac{4}{30}}{\dfrac{14}{30}}=\dfrac{4}{14}=\dfrac{2}{7}=0.28571...=29\%$

Therefore, the probability that the student is a freshman given they are male is 29% (nearest percent).

Learn more about conditional probability here:

brainly.com/question/28028208

brainly.com/question/23957743

8 0

1 year ago

HELP!!!IM SO CONFUESED!!!MULTIPLYING FRACTIONS

Ad libitum [116K]

Since there are a lot of questions, let me just show you how to do one.
1/4×3/5
First multiply from left to right, so 1×3 is 4 and 3×5 is 15, so the answer is 4/15. If the final fraction can be reduced, divide it by the GCF and you'll get the answer.

3 0

3 years ago