Manuel and Kristina are reviewing like terms in the problem 3x + 3 - 4x. Manuel said that 3x and 3 are like terms because they both have threes. Kristina said 3x and -4x are like terms because they both have the same variable. Who is correct? Explain.

Answer:

65

Step-by-step explanation:

13x5 = 65

Answer:

The answer is 65 lol

Step-by-step explanation:

Hopefully this helps

Answer:

28 (length' unit)²

Step-by-step explanation:

the area of all A rectangle - The area of the missing portion of the rectangle = 32 - 4 = 28 (length' unit)²

Answer:

8:11

Step-by-step explanation:

80:110

Find highest common factor which would be 8.

Divide both sides by 8.

8:11

Step-by-step explanation:

Area = 1/2 x b x h

= 1/2 x 9 x 10

= 45 cm ^2

As it has 6 faces, we multiply the area by 6

45 x 6 = 270 cm^2

Answer:

A 2(4m + 3)   Distribute 8m +6   match

C 8m + 6    This matches

Step-by-step explanation:

18 + 4(m − 3) + 4m

First distribute

18+ 4m -12 +4m

Then combine like terms

8m +6

Now see which expressions match

A 2(4m + 3)   Distribute 8m +6   match

D 4(2m + 4)  Distribute  8m + 16   no match

B 5m + 19  This does not have 8m   no match

E 8m + 16  This does not have 6 as a constant  no match

C 8m + 6    This matches

Answer:

yes

Step-by-step explanation:

Hello There!

In order for a right triangle to be a right triangle the hypotenuse ( longest side) squared must equal the sum of the two shorter sides squared

so if this is a right triangle then

[tex]21^2+28^2=35^2\\21^2=441\\28^2=784\\784+441=1225\\35^2=1225\\1225=1225[/tex]

so as you can see 21^2+28^2 does = 35^2 so the side measures given do make a right triangle

Step-by-step explanation:

To find the value of x bring the variables to the left side and bring all what remained values to the right side and then simplify them to find the answer or the result hope I helped and a have a good luck

Answer:

a)

[tex]n = (\frac{z\sqrt{0.16*0.84}}{0.03})^2[/tex], in which z is related to the confidence level.

b) A sample size of 991 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In 16% of all homes with a stay-at-home parent, the father is the stay-at-home parent

This means that [tex]\pi = 0.16[/tex]

a. What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.03 (round up to the next whole number).

This is n for which [tex]M = 0.03[/tex]. So

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.03 = z\sqrt{\frac{0.16*0.84}{n}}[/tex]

[tex]0.03\sqrt{n} = z\sqrt{0.16*0.84}[/tex]

[tex]\sqrt{n} = \frac{z\sqrt{0.16*0.84}}{0.03}[/tex]

[tex](\sqrt{n})^2 = (\frac{z\sqrt{0.16*0.84}}{0.03})^2[/tex]

[tex]n = (\frac{z\sqrt{0.16*0.84}}{0.03})^2[/tex], in which z is related to the confidence level.

Question b:

99% confidence level,

So [tex]\alpha = 0.01[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.01}{2} = 0.995[/tex], so [tex]Z = 2.575[/tex].

[tex]n = (\frac{z\sqrt{0.16*0.84}}{0.03})^2[/tex]

[tex]n = (\frac{2.575\sqrt{0.16*0.84}}{0.03})^2[/tex]

[tex]n = 990.2[/tex]

Rounding up

A sample size of 991 is needed.

Answer:

24

Step-by-step explanation:

72/3=24

Answer:

Step-by-step explanation:

1 acre = 4,840 yd²

1 acre = 43,560 ft²

4,840 yd² = 43,560 ft²

1 yd² = 43,560/4,840 ft² = 9 ft²

Answer:

b

Step-by-step explanation:

Step-by-step explanation:

Perimeter of rectangle = 2(l+b)

= 2(97+17)

= 2(114)

= 228cm

Answer:

P = 228 inches

Step-by-step explanation:

P = 2(l + w)

l = 97 inches

w = 17 inches

P = 2 (97 + 17)

P = 2 x 114

P = 228

Answer:

A

Step-by-step explanation:

the x values are the same so there is no increase or decrease in slope. therefore the slope is 0

Answer:

m<W: 23

Step-by-step explanation:

8x - 9 + 30x - 4 + 13x - 11 = 180

51x - 24 = 180

51x = 204

x = 4

m<W:

8x - 9

8(4) - 9

32 - 9

23

Answer:

2 events

Step-by-step explanation:

There are four options. If 1 is selected, then we have two outcomes of the event. This means that there are two outcomes for the first event.

Hope this helps. Have a nice day.

Answer:

C. AB/BC=FE/ED

Step-by-step explanation:

Answer:

10 is the right answer

Step-by-step explanation:

please mark me as brainliest answer

Answer:

C) 40 students

Step-by-step explanation:

The correct percent double 20% is 40% but they want to know what is 40% of the total. Set up a proportion.

x 40%

_____ = _____

800 100  

Cross multiply and divide to get your answer!

Answer:

wut the actual fu q docu FM HD so

Answer:

c 12/3.95 = 9/x is the answer.

Answer:

12 hours.

Step-by-step explanation:

A motorist takes 5 hours to travel 300km

This means that his velocity, in km per hour, is given by:

v = 300/5 = 60 km/h

How long will it take to travel 720 km at same average speed?

720 km, 60 an hour. So

720/60 = 12

It will take 12 hours.

Answer:

$4,515.14

Step-by-step explanation:

First we need to get the amount after 25 years on $400,000 at 5% interest

Using the compound interest formula

A = P(1+r)^n

A = 400,000(1+0.05)^25

A = 400,000(1.05)^25

A = 400,000(3.3864)

A = $1,354,541.98

Since 25years = (25*12)months

25 years = 300months

Amount to be able to pull out each month = $1,354,541.98/300

Amount to be able to pull out each month = $4,515.14

Hence you will be able to pull out $4,515.14 each month

Answer:

4

a. 12

b. 8

c. 30

d. 40

Step-by-step explanation:

each exterior = 360/n

30*n=360

divide both side by 30

Answer is 12

The same apply to others to 4d

so first its 4

a. 12

b. 8

c. 30

d. 40

i will try to explain:

each exterior = 360/n

30*n=360

divide both side by 30

Answer is 12

The same apply to others to 4d

Answer:

number 1

Step-by-step explanation:

Answer:

is this statistics? i will change my answer once u explain to me thank you.

Step-by-step explanation:

Answer:

Its infinite

Step-by-step explanation:

Answer: The first option.

Step-by-step explanation:

If you square you get [tex]2x+3=2x+9[/tex]

x=0