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Answer:

(9a4 + 2a2 + 5) – (16a4 – 7a2 + 1)

A. 25a4 – 5a2 – 4

B. –7a4 – 5a2 + 6

C. 25a8 + 9a4 + 6

D. –7a4 + 9a2 + 4

5.Multiply 9x2(2x2 + 8x).

A. 18x4 + 72x3

B. 18x2 + 72x3

C. 11x4 – 17x3

D. 90x4

Answer:

i. Girls : 10 merits

ii. Boys : 11.4 merits

iii. The boys did better on average because the number of their mean merits received is higher than that girls.

Step-by-step explanation:

Mean = [tex]\frac{sum of merits}{number of merits}[/tex]

Sum of merits received by boys = 5 + 10 + 19 + 22 + 13 + 10 + 1

                                    = 80

number of merits = 7

Mean number of merits received by boys = [tex]\frac{80}{7}[/tex]

                                           = 11.4286

The mean number of merits received by boys is 11.4

Sum of merits received by girls = 6 + 11 + 15 + 16 + 12 + 10 + 0

                                                 = 70

number of merits = 7

Mean number of merits received by girls = [tex]\frac{70}{7}[/tex]

                                             = 10.0

The mean number of merits received by girls is 10.0

Therefore,

i. Girls : 10 merits

ii. Boys : 11.4 merits

iii. The boys did better on average because their mean merits is higher than that girls.

Answer:

6(4x+3y)

Step-by-step explanation:

24 and 18 have a HCF of 6, so yeah

Answer:

It’s 52.5

Step-by-step explanation:

Got it on edge

The percentage of numbers randomly generated by Taylor's computer that is less than 0.5 will be 12.5% .

A percentage is a minimum number or ratio that is measured by a fraction of 100.

A numerical distribution with continuous results is a density curve. A density curve is, in other terms, the graph of a continuous distribution. Which implies that density curves can represent continuous quantities like time and weight rather than discrete events like rolling a die (which would be discrete).

Also the bell-shaped "normal distribution," density curves either lie above or on a horizontal line (one of the most common density curves).

The percentage of numbers randomly generated by Taylor's computer are less than 0.5 is;

P(0≤X≤0.5)

= 1/4 (0.5 - 0)

= 1/4 (0.5)

= 0.125

That is 12.5%

Hence, The percentage of numbers randomly generated by Taylor's computer that is less than 0.5 will be 12.5% .

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Answer: 15x - 45

Step-by-step explanation:

(5)(3x) = 15x

(5)(-9) = 45

Answer:

I dont know that try asking one of the tutors one here

Answer:

$167.38

Step-by-step explanation:

$150.50-$25.37=$125.13

$125.13+$42.25=$167.38

Answer:

2 TO 1

2:1

Step-by-step explanation:

Answer:

z>-4

Step-by-step explanation:

Answer:

z>4

Step-by-step explanation:

-2z-3<5

add 3 to 5: -2z < 8

divide by -2: z < -4

but since you divided by a negative number, you have to change the way the inequality is facing so the answer is z>-4

Step-by-step explanation:

(a)

[tex]2 \frac{1}{2}\div \frac{5}{2}=\dfrac{\frac{2\times2+1}{2}}{\frac{5}{2}}\\\Rightrrow\dfrac{\frac{5}{2}}{\frac{5}{2}}=1[/tex]

(b)

[tex]3\div \frac{2}{3}=\dfrac{3}{\frac{2}{3}}=\frac{3\times3}{2}=\frac{9}{2}[/tex]

(c)

[tex]6 \frac{3}{4}\div 2\frac{1}{4}=\dfrac{\frac{6\times4+3}{4}}{\frac{2\times4+1}{4}}\\\Rightarrow \dfrac{\frac{27}{4}}{\frac{9}{4}}=\frac{27}{9}=3[/tex]

(d)

[tex]\frac{1}{3}\div 3=\dfrac{\frac{1}{3}}{3}=\frac{1}{9}[/tex]

Answer:

9/14 dividend

27/28 quotient

Step-by-step explanation:

Dividend is the one being divided by the divisor

quotient is the answer

Step-by-step explanation:

after 4 hours, the water level decreased by 8 feet

which is -8

Therefore -8/4 = -2 change in water level every hour

Answer:

The constant rate of change is 2 feet every hour.

Step-by-step explanation:

Since the level of the water was at 10 feet at 2 pm, and the water at 6 pm was at 2 feet, the water level dropped 8 feet in 4 hours.

With this information we can create the ratio 4:8 and when you simplify the ratio down to 1, you get 1:2

1 Representing 1 hour

2 Representing 2 feet

Every hour, the water level drops 2 feet.

Answer:

17/50

Plzzzz give me Brainliest!  

The probability that both erasers chosen were blue is 3/25.

To find the probability that both erasers chosen were blue, we need to determine the favorable outcomes (choosing two blue erasers) and the total possible outcomes.

There are a total of 25 erasers in the cup: 7 red erasers + 4 yellow erasers + 9 blue erasers + 5 green erasers = 25 erasers.

To calculate the probability, we consider the events of choosing a blue eraser without replacement.

For the first pick, there are 9 blue erasers out of 25 total erasers.

After the first blue eraser is chosen, there are 8 blue erasers remaining out of 24 total erasers.

The probability of choosing a blue eraser on the first pick is 9/25.

The probability of choosing a blue eraser on the second pick, without replacement, is 8/24.

To find the probability of both events occurring (both erasers chosen being blue), we multiply the probabilities together:

(9/25) * (8/24) = 72/600 = 6/50 = 3/25

Therefore, the probability that both erasers chosen were blue is 3/25.

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Answer:

Arnie

Step-by-step explanation:

Arnie : 34 ÷ 16 = 2.2

Maria : 18÷ 15= 1.2

Answer:

45 min

Step-by-step explanation:

Step-by-step explanation:

4: Triangle area = b*h/2 = 8*10.5/2 = 42

5: b*h/2 = area

285 = 15*b/2

b = 38

Answer:

(Choice A) is the correct answer

Answer:

C

Step-by-step explanation:

�

xx

�

yy

18

1818

3

33

27

2727

4

1

2

4

2

1

​

4, start fraction, 1, divided by, 2, end fraction

33

3333

5

1

2

5

2

1

​

5, start fraction, 1, divided by, 2, end fraction

Answer:

=−10y+11.5

Step-by-step explanation:

Let's simplify step-by-step.

3−2y−8y+8.5

=3+−2y+−8y+8.5

Combine Like Terms:

=3+−2y+−8y+8.5

=(−2y+−8y)+(3+8.5)

=−10y+11.5

Answer:

the car would have to be going under 5mph

Step-by-step explanation:

Answer:

The answer is A.

Step-by-step explanation:

To gain support of the Chinese government for their policies.

Answer:

x=28/6

Step-by-step explanation:

0.6x=2.8

0.6x*10=2.8*10

6x=28

6x/6=28/6

x=28/6

Answer:

the first question is A and Second  Question  is the first one

Step-by-step explanation:

Answer:

t=v/dl

Step-by-step explanation:

v=dlt you want the t to be by itself on one side

t=v/dl so divide the other side by d and l

Answer:

f⁻¹(x) = (x + 2)/3

Step-by-step explanation:

I'm going to assume the question is asking for the inverse. If that is the case, you want to switch x and y in the equation and solve for y.

f(x) = 3x - 2

x = 3f(x) - 2

x + 2 = 3f(x)

(x + 2)/3 = f⁻¹(x)

Therefore, the inverse is f⁻¹(x) = (x + 2)/3.

Answer:

Incorrect

I did the math and that is the awnser

Answer:

25 is the tenth, 17 is the hundreth and 42 is the ten thousands

Step-by-step explanation: