Please help me fast please , i really dont understand .

Answer:

68

Step-by-step explanation:

Answer:

The Whole

Step-by-step explanation: it is the whole because it is saying that there were 14 cars sold and that was 56% of whatever the whole is.

Answer:

3x2>n+2x7>n

Step-by-step explanation:

from what I understand, you're suppose to write what's its saying in numbers. so you have to write three times two more than the number n in numbers then add that expression with two times seven more than the number n. I hope I helped

Answer:

True.

Step-by-step explanation:

Given:

Total number of students at Colfax Middle School = 270

Ratio of boys to girls is 5:4.

Total number of students at Winthrop Middle School = 180

Ratio of boys to girls is 4:5.

The two schools hold a dance and all students from both schools attend.

To find:

The fraction of the students at the dance are girls

Solution:

There are 270 students at Colfax Middle School, where the ratio of boys to girls is 5:4.

[tex]5+4=9[/tex]

Number of boys [tex]=270\times \dfrac{5}{9}=150[/tex]

Number of girls [tex]=270\times \dfrac{4}{9}=120[/tex]

There are 180 students at Winthrop Middle School, where the ratio of boys to girls is 4:5.

[tex]4+5=9[/tex]

Number of boys [tex]=180\times \dfrac{4}{9}=80[/tex]

Number of girls [tex]=180\times \dfrac{5}{9}=100[/tex]

Now,

Total number of students in both schools [tex]= 270+180[/tex]

                                                                [tex]= 450[/tex]

Total number of girls in both schools [tex]= 120+100[/tex]

                                                         [tex]= 220[/tex]

The fraction of the students at the dance are girls is

[tex]\text{Required fraction}=\dfrac{\text{Total number of girls in both schools}}{\text{Total number of students in both schools}}[/tex]

[tex]\text{Required fraction}=\dfrac{220}{450}[/tex]

[tex]\text{Required fraction}=\dfrac{22}{45}[/tex]

Therefore, the required fraction is [tex]\dfrac{22}{45}[/tex].                                

Answer:

Step-by-step explanation:  -49 -(-66)

= -49 + 66  ( here (-) and (-) is multiplied, therefore the final answer is +)

= 17                ( here when - and+ sign comes subtract them as we do normally, then mark the final answer with the greater number's sign, here the greater number is 66, so in the final answer we mark +17 or 17)

Answer:

∠ 1 = 149°, ∠ 2 = 31°

Step-by-step explanation:

∠ 1 and 31° are same-side interior angles and are supplementary, thus

∠ 1 = 180° - 31° = 149°

∠ 2 and 31° are alternate angles and congruent, thus

∠ 2 = 31°

Replace the value of each letter and add:

46 + 19 + 54 = 119

The answer is 119

Answer: 2 /21

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

2/5 x 10 = 4

Answer:

7/10

Step-by-step explanation:

Answer:

1. 7

2. -3

4. -4/6

Step-by-step explanation:

i solved using y2-y1/x2-x1

Answer:

1. slope= 7

2. slope= -3

3. slope= -2/3

Step-by-step explanation

you find slope by doing rise over run (how much you have to go up/down and left/right to get to the next point.

for the first one, to get from the bottom point to the top point, you have to rise 7, and go to the right 1, which makes 7/1, simplified to 1.

for the second one, you go to rise 6, and then go to the left 2, which makes 6/-2, it is negative because when you have to go left, it just means a negative slope. this simplifies to -3

for the third one, you rise 4 and go to the left 6 from the bottom point to the top point. this makes 4/-6, simplifies to -2/3/

hope this help, i'm not the best explainer though, sorry :(

Answer:

1 cup of flour(x)=16 cookies(y)

Step-by-step explanation:

3 cups of flour=48 cookies

3/3=48/3

1 cup of flour=16 cookies

Answer:

Pythagorean Theorom: a^2+b^2=c^2

Take the largest number of each as C (hypotenuse)

3,4,5

(3)^2+(4)^2= (5)^2

25=25

Therefore it is a Pythagorean Triple.

8,15,17

(8)^2+(15)^2=(17)^2

289=289

Therefore it is a Pythagorean Triple.

We want to find the slope of a line perpendicular to 15*x + 9*y = 189.

The slope of the line perpendicular to the given line is 9/15.

First, a general line written in the slope-intercept form is written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

And two lines are perpendicular if one has a slope that is equal to the inverse of the opposite of the other line's slope.

So, to find the slope of the line perpendicular to 15*x + 9*y = 189, first, we need to find the slope of this line.

To do it, we need to isolate y.

9y = -15x + 189

y = (-15/9)*x + 189/9

So the slope is -15/9

A perpendicular line to this must have a slope equal to the inverse of the opposite of this, so the slope of the perpendicular line is:

-(-9/15) = 9/15

The slope of the line perpendicular to the given line is 9/15.

If you want to learn more, you can read:

https://brainly.com/question/9379960

Answer:

The diamond production is 2006 is expected to be 13.24 billion

Step-by-step explanation:

Here, we want to predict the diamond production is 2006

The equation to use is given in the question as;

f(x) = 0.39x + 10.9

Since x is the number of years after 2006, in this particular question, x will be 2006-2000 = 6

So f(6) = 0.39(6) + 10.9

f(6) = 2.34 + 10.9

f(6) = 13.24 billion

Answer:

The number (x) in: "5 more than twice a number is 17" is what we are solving here.

Step-by-step explanation:

Answer:

1 2/31

Step-by-step explanation:

Answer:

o.2m.

s=av/t where av= average speed and s= speed and t= time

The cheetah ran 960 meters in 30 seconds with an average speed of

36 m/s.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

We know, distance = speed×time or d = st.

Given, A cheetah runs with an average speed of 32 m/s for 30 seconds.

Here, s = 32 m/s and t = 30 seconds.

Therefore, d = 32×30 meters.

d = 960 meters.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ3

Answer:

diagonals

lf= Boc =90°

Bcd = 50°

QAB (A) ? jadi jawaban nya

(D). 10°

Step-by-step explanation:

Diognals of a Parallegram ABCD intersat at o

lg and then is.

"sorry ya kalo jawaban nya salah "

Answer:

1.2 x 10^4 = 12,000

4.5 x 10^-3 = 4.5 x 1/(10^3) = 4.5/1000 = 0.0045

3.8 x 10^3 = 3,000

7.5 x 10^3 = 7,000

largest is 1.2 x 10^4

Step-by-step explanation:

gotchu fam

Answer:

Janice travelled 6 miles.

Step-by-step explanation:

23 -5=18

18/3=6

so Janice travelled 6 miles.

Answer:

2x - y = 0

Hope this helps

Answer:

y=2x

Step-by-step explanation:

when x =1,2,3 y=2,4,6 respectively so

y is the double of x

y=2x

hope it helps

Answer:

7.43

Step-by-step explanation

i Got it by calculating the varible s with 9 over with 6

Answer:

no

Step-by-step explanation: