Three times the difference of a number and 7 is 30. Find the number.

Answer:

JjKjKjKk

Step-by-step explanation:

Answer:

12x+10

Step-by-step explanation:

10x+2(x+5)

10x+2x+10

12x+10

Answer:

The answer is 4 x^2 + 1

Step-by-step explanation:

X^2 + 3x^2 + 4 - 3

(x^2 + 3 x^2) + (4 − 3)

4 x^2 + 1

Answer:

Step-by-step explanation:

Explanations Are below

Step 1

x^2 + 3x^2 + 4 - 3  Observe the equation

Step 2

x^2 + 3x^2 + 4 - 3  Combine the like terms

(x2+3x2)+(4+-3)

Step 3

(x2+3x2)+(4+-3)  Simplify by adding and subtracting

Answer: 4x^2+1

Function:

f(x) = 30x (75%) + 1

Bacteria after 2 hours:

10,890 bacteria

Answer:

I'm not sure about the function but here is the answer: 3

Step-by-step explanation:

Well, 75% of 1 is 0.75 + 75% of that + 75% of that and so on until you do it four times. Why four? Well it increases every 30 MINUTES so 30 min + 30 min + 30 min + 30min = 2 hours!

Answer:

C) Angle 2 and angle 6 are complementary angles.

Step-by-step explanation:

C) Angle 2 and angle 6 are complementary angles.

6 is the same as 3, and 2 & 3 equal 90 degrees, and so do 2 & 6

Answer:

12 different possibility

Step-by-step explanation:

1- pbj, cookie, juice

2-pbj, cookie, milk

3-pbj, cookie water

4-pbj,brownie, juice

5-pbj, brownie milk

6-pbj, brownie water

7-turkey, cookie, juice

8-turkey, cookie, milk

9-turkey, cookie, water

10-turkey, brownie, juice

11-turkey, brownie, milk

12-turkey, brownie, water

Answer:

Shona ran farther

Step-by-step explanation:

3/4 *3/3 is 9/12 and 9/12 is bigger than 7/12

Answer:

Shona

Step-by-step explanation:

Both fractions have different denominators. To get a better picture of who ran further, let's have both fractions have the same denominator.

Let's convert the smaller denominator to the bigger one.

In order to do this, we will multiply top and bottom by 3:

[tex]\frac{3}{4} *\frac{3}{3} \\\frac{9}{12}[/tex]

Now, we compare the two fractions by seeing which numerator is closer to denominator.

From this comparison, the converted fraction, [tex]\frac{9}{12}[/tex] is closer to 12.

Therefore, Shona ran further.

Answer:

B

Step-by-step explanation:

B is correct

Hope this helps!!!

Answer:

55.75

Step-by-step explanation:

find the area of 1 side using the base and height and divide that answer by 2

5x6=30     30 divided by 2=15

all sides are equal so each side is 15

the base you do the same thing.

base is 5, height is 4.3

4.3 x 5= 21.5

divide it by 2 10.75

side 1=15

side 2= 15

side 3=15

base 1= 10.75

add all together

55.75

Answer:

Complementary, X = 60 degrees

Step-by-step explanation:

Complementary = 90 degree angle

Supplementary = 180 degree angle

(x - 30) + x = 90

(60 - 30) + 60 = 90

30 + 60 = 90

Hi there!

[tex]\large\boxed{\text{Complementary, x = 60}}[/tex]

When two angles add up to 90°, then the two angles will be complementary.

We can solve for x knowing that both angles sum up to 90°:

90 = (x - 30) + x

Combine like terms:

90 = 2x - 30

120 = 2x

x = 60°.

There are 5,140 millimeters in 5.14 meters, so the answer is B. :) please mark thanks!

Answer:

117 5/5, 116 10/5, 117 4/4

Step-by-step explanation:

The list is infinite

Answer:

115 15/5, 114 16/4, 112 60/10

Step-by-step explanation:

THIS IS NOT PLAGARISM SO SIMPLY DO NOT REPORT MY ANSWER I TOOK TIME AND EFFORT IN THIS. And the person who asked this, you can write is as a mixed number or fraction by taking away some wholes then making up a denominator and then do the many times you took away the whole and multiply the denominator that many times to be as your numerator Example:

3, say if i take 3 from 118 you are now left with 115.

now we are going to find a random EASY denominator depending on which you'd like.

Lets say 12 is our denominator. SO this so far would be 115 1/12.

Next we are going to find a numerator THAT IS THE MANY TIMES IT HAS BEEN TAKEN AWAY FROM THE 118. Which means we are going to multiply by 3 to the denominator which would be 36. So 36 would be your numerator.

It would look like this: 115 36/12

Simplify:

118

Answer:

1/6

Step-by-step explanation:

should be the answer if I'm not mistaken

Answer:

y=-5x+25

Step-by-step explanation:

because she is loosing 5 dollars it would be a negative and since we are starting off with $25 that's our y intercept

Answer:

$25-$5=x

Step-by-step explanation:

Answer:

the second option because it's three times the width so it would be time the W

Step-by-step explanation:

Answer:

the guy above me is correct

Step-by-step explanation:

just did the test got a 100%

Answer:

a) x²-x-6

b) 2x²-11x+12

c) x²-4

Step-by-step explanation:

See image!

Answer: The answer would h=13Sin63deg

Step-by-step explanation:

Idrk, I just caculated it on paper-

Answer:

240 is the number of girls, 180 is the number of boys, 60 is how many more girls there are

Step-by-step explanation:

420/7 = 60 (if you add 3 to 4 you get 7)

60*4 = 240 (240 is the number of girls)

60*3 = 180 (180 is the number of boys)

240 - 180 = 60 (This 60 is how many more girls there are)

Answer:

Its just there boys and girls but there are 60 more girls

Step-by-step explanation:

Answer:

it’s 23000    

Step-by-step explanation:

Answer:

x  =  −

6

Step-by-step explanation:

Nearly Positive hope i helped :)

Answer: C

Step-by-step explanation:132/6=22

Answer:

Step-by-step explanation:

132-6t=0

-6t=-132

t=22 minutes

Answer:

1) -16<x

2) 8>x

3) 10≤x

Step-by-step explanation:

1) -16<x

2) 8>x

3) 10≤x

Answer:

question 6 is -16>x

question 7 is 8>x

question 8 10<=x

Answer:

39.52 L

Step-by-step explanation:

10.4x3.8

1 gallon = 3.8 liters

3.8x10=38 The closest one is H

Answer:

750 m

Step-by-step explanation:

Theorem:

In a triangle, a segment whose endpoints are the midpoints of two sides is parallel and half the length of the third side.

In triangle LMN, segment DF has endpoints which are midpoints of sides LM and MN. That makes segment DF parallel to side LN and half the length of LN.

The shortest path from point D to point N is segments DF and FN.

Point F is the midpoint of segment MN.

MN = 800 m

FN = (1/2)MN = (1/2)(800 m) = 400 m

From the theorem,

DF = (1/2)LN

DF = (1/2)(700 m) = 350 m

shortest path = DF + FN = 350 m + 400 m = 750 m

Answer: 750 m

Pythagorean theorem

in the right angle triangles there is a relationship that governs the length of the three sides. if we knows the length of any two sides, the third side may be calculated by the use of the Pythagorean theorem.

This theorem states that the square on the hypotenuse of a right angled triangle is equal to the sum of the squares on the remaining two sides.

we only use Pythagorean theorem to find the length of the missing side of a right angled triangle only.

Answer:

8h = P

Step-by-step explanation:

you do the amount she makes and hour (8$) multiply by the number of hou   hours (h), and make it equal the total pay (P). So you would write 8h = P (8$ for each hour equals her total pay for those hours)

Answer:

these are real solutions