Can someone help me pls. 4x = 24

Answer:

x⁴ - y⁴= (x²)²- (y²)² = (x² + y²)(x²- y²) = (x²+y²)(x)²-(y)²=(x²+y²)(x+y)(x-y)

49x²-16/25= (7x)²- (4/5)²=(7x+4/5)(7x-4/5)

Answer:

(7x + 4/5)(7x - 4/5)

Step-by-step explanation:

iv. 49x² - 16/25

= (7x)² - (4/5)²

= (7x + 4/5)(7x - 4/5)

Step-by-step explanation:

first u need to find the sum of the money then u can find the answer . u can check the picture above. i hope this help u

Answer:

B

Step-by-step explanation:

The maximum amount Eric can spend on magazines is $25 less the cost of lunch, $15.

The appropriate inequality sign would be less than since he cannot spend more than $25.

Also, the amount he can spend on magazines would be what is left after paying for lunch.

So the correct inequality is 4m - 15 < 25

Answer:

-2 -1 0 1 are the only integer solutions

Answer:

{-2, - 1, 0, 1}

Step-by-step explanation:

The integer solutions will be {-2, - 1, 0, 1}

Answer: z=115 x=6

Explanation: 14x-19 + 115 = 180

115 = z

Answer:

36 quarters   48 dimes  64 nickels

Step-by-step explanation:

quarter = q

dime = q+12

nickel = 2q-8

$17 = 1,700 cents

(q)25 + (q+12)10 + (2q-8)5 = 1,700

25q +10q+120  +10q-40 =1,700

45q+80 = 1,700

45q = 1620

q= 36      

 36     QUARTERS x25 =  900cents

 48 DIMES    x10      =         480 cents

  64 NICKELS x 5 =             320 cents

  TOTAL                              1,700 cents ($17)

Answer:

22

Step-by-step explanation:

15+12=27

27-5=22

Answer:

may be the answer is (16,-9)

Answer:

4x + (5x+18) = 180-81=99

9x+18=99

9x=99-18=81

x=9

Step-by-step explanation:

Answer:

area = 16 cm²

Step-by-step explanation:

area of rectangle = 3x4 = 12

area of triangle = 2x4x0.5 = 4

12 + 4 = 16 cm²

another way is :

1/2(b1+b2)(h) = area

1/2(3+5)(4) = 16 cm²

Answer:

4 pounds of candy

Step-by-step explanation:

2/3 pounds of candy each

6 bags

2/3 or 0.6 × 6 bags = 4 pounds

Answer:

The answer is " [tex](21120)_3[/tex]  and [tex](100011112)_3[/tex]"

Step-by-step explanation:

Calculating the sum:

[tex]a= (20001)_3 \\\\b= (1112)_3[/tex]

[tex]\to a+b = 20001+1112[/tex]                     // 163+41=204

             [tex]=(21120)_3[/tex]

Explanation:

In the addition, first convert the given value (a,b) into decimal point that is (163, 41) and by adding its value is equal to (204) and after convert its value is equal to [tex](21120)_3[/tex].

Calculating the product:

[tex]a= (20001)_3 \\\\b= (1112)_3[/tex]

[tex]\to a*b = 20001*1112[/tex]                //  163 *41=6,683

             [tex]=(100011112)_3[/tex]

Explanation:

In the product calculation we convert the given value (a,b) into decimal point that is (163, 41) and multiplting its value which is equal to (6,683) and after convert its value is equal to [tex](100011112)_3[/tex].

Answer:

I think it should be 9 because 9x4 is 36

Answer:

b . 4/5

60 :15 minute : 4

3 /15 x 4 = 12/15 = 4/5

Answer:

A. 0.2734 = 27.34% probability that there are an equal number of boys and girls

B. 0.2753 = 27.53% probability that she’ll answer exactly 5 questions correctly

Step-by-step explanation:

In each of these questions, the binomial probability distribution is used.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

A.The Murray family has produced 8 children.

What is the probability that there are an equal number of boys and girls?

8 children means that [tex]n = 8[/tex]

Each children is equally as likely to be a boy or a girl, which means that [tex]p = 0.5[/tex]

This probability is P(X = 4). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 4) = C_{8,4}.(0.5)^{4}.(0.5)^{4} = 0.2734[/tex]

0.2734 = 27.34% probability that there are an equal number of boys and girls

B.Margie has the uncanny ability of being able to guess the correct answer to TRUE/FALSE questions with an 80% accuracy rate. Tomorrow’s test has 7 questions on it and she needs to answer 5 questions correctly in order to make the Honor Roll. If she guesses on every question, what is the probability that she’ll answer exactly 5 questions correctly?

80% accurracy rate means that [tex]p = 0.8[/tex]

7 questions means that [tex]n = 7[/tex]

The probability is P(X = 5). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 5) = C_{7,5}.(0.8)^{5}.(0.2)^{2} = 0.2753[/tex]

0.2753 = 27.53% probability that she’ll answer exactly 5 questions correctly

Answer:

28.

Step-by-step explanation:

Area = 1/2 ( 6 + 8) * 4

= 7 * 4

= 28.

Answer: I am here to help and save the day....

Step-by-step explanation:

I hope I helped have a great day  bye.

Answer:

14% od 2 gallons

Step-by-step explanation:

hope this helped also is this blue sign showing up saying something out exam mode?

Answer:

x=14/3

Step-by-step explanation:

5x-y=6

+ -2x+y=8

----------------

5x+(-2x)-y+y=6+8

5x-2x-y+y=6+8

3x=14

x=14/3

I apologize if something is incorrect, please me know how to fix it. Thank you!

Answer:

3x=14

Step-by-step explanation:

i did it on khan lol

Answer:

I think the answer is 16 option b

Answer:

1.Formula method(almighty formula）

2.Completing the square method

Step-by-step explanation:

Key features are:

1.They have coefficients

2.Roots

Answer:

The number is 4

Step-by-step explanation:

We set up the equation given the conditions listed. Since it says 5 times the difference between a number and 7, we can use x as a placeholder for the number.

(x-7) is the difference between the number and 7. The question asks for 5 times that difference thus we multiply the entire thing by 5 giving us 5(x-7. The question says that it all equals -15 so we set that expression equal to -15.

Thus we get the equation and solve:

5(x-7)= -15 (distributive property)

5x-35= -15 (add 35 to both sides)

5x=20 (divide by 5)

x=4; so the number is 4