Need help asap please

Answer:

$30

Step-by-step explanation:

Answer:

Sara wants to save 30 dollars.

Step-by-step explanation:

You turn 20% into a decimal which 20%= 0.20

Then you multiply 150 x 0.20 =30

So Sara wants to save $30.

9514 1404 393

Answer:

  a: 0; b: 1; c: 1; d: ∞; e: 0; f: ∞

Step-by-step explanation:

Simplify the expressions to put the left and right in the same form. Then compare. If the x-coefficients are the same, there will be 0 or ∞ solutions. If they are different, there will be 1 solution.

If the x-coefficients are the same, look at the constants. If they are different, there will be 0 solutions. If they are the same, there will be ∞ solutions.

__

a) -2x -10 = -6x +4x -8  ⇒  -2x -10 = -2x -8 . . . . 0 solutions

b) 0.8x -4.8 = -0.5x +3.4 . . . . 1 solution

c) -1/4x -7/2 = -3x -4 . . . . 1 solution

d) 2x -8 +x = 3x -6 -2  ⇒  3x -8 = 3x -8 . . . . ∞ solutions

e) 3 -2/5x -12/5 = 2 -2/5x  ⇒  -2/5x +3/5 = -2/5x +2 . . . . 0 solutions

f) 6x -6 +21 = 6x +15  ⇒  6x +15 = 6x +15 . . . . ∞ solutions

Answer:

a)3x+7x-8=18

3x+7x=18+8

10x=18+8

10x=26

x=13/5

b)-8+2x=12x-3

-8+2x-12x=-3

2x-12x=-3+8

-10x=-3+8

-10x=5

x=-1/2

e)4/3x-18+2/3x=7/3x+9

4x-54+2x=7x+27

6x-54=7x+27

6x-7x-54=27

6x-7x=27+54

-x=27+54

-x=81

X=-81

d)-2x-4/5 +8/5 =3x-3

-2x-4+8=15x-15

-2x+4=15x-5

-2x-15x+4=-15

-2x-15x=-15-4

-17x=-15-4

-17x=-19

x=19/17

Step-by-step explanation:

Answer:

1250 bacteria

Step-by-step explanation:

The formula for Exponential Growth is given as:

P(t)= Poe^rt

Where

P(t) = Population after time t

Po = Initial Population

r = growth rate

t = time

Hence, solving for the above question , we have to find Po

Making Po the subject of the formula

Po = P(t)/e^rt

Step 1

Find the Exponential growth rate

At the end of 3 h there are 10,000 bacteria.

Hence:

Po = 10000/e^3r.... Equation 1

At the end of 5 h there are 40,000 bacteria.

Po = 40000/e^5r..... Equation 2

Equating both equations together,

10000/e^3r = 40000/e^5r

Hence:

e^5r/e^3r = 40000/10000

e^2r = 4

Take the In of both sides

In (e^2r) =In 4

2r= In 4

r = In 4/2

r = In 2

Step 2

Solve for Po(Initial Population)

Using Equation 2

Po = 40000/e^5r..... Equation 2

r = In2

Po = 40000/e^5 × In 2

Po = 40000/2⁵

Po = 1250 bacteria.

Therefore, they was 1250 bacteria initially

Answer:

B.

Step-by-step explanation:

Irrational as π is irrational.

x = [tex]\frac{d - b}{a -c}[/tex]

hope this helps <3

Answer:

7.722cm^2

Step-by-step explanation:

area of square=l^2=6^2=36cm^2

area ofcircle=π(d÷2)^2=3.142(6÷2)^2=3.142×9=28.278cm^2

where d=l=6cm

area of shaded =area of (square-circle)=36-28.278=7.722cm^2

Answer:

x = 38°

Step-by-step explanation:

this is a four-sided polygon, so the sum of the interior angles measures 360 degrees; formula is (n - 2) · 180 where 'n' is the number of sides

add all four expressions and set equal to 360

5x - 33 + 5x + 13 = 360

10x - 20 = 360

10x = 380

x = 38

check by plugging 38 into each expression to make sure the total is 360

starting in upper left and moving clockwise, the angles are: 75°, 82°, 114°, 89°

Answer:

Step-by-step explanation:

Answer:

The range of  the function y = 3/4 x + 17 when the domain is -12, -4, 8​ is 8,14,23

Step-by-step explanation:

We need to find the range of the function y = 3/4 x + 17 when the domain is -12, -4, 8​

Basically, we need to find value of y when x is -12,-4 8

The values of y is the range of the given function.

Put x = -12

[tex]y = \frac{3}{4} x + 17\\y= \frac{3}{4} (-12) + 17\\y=3(-3)+17\\y=-9+17\\y=8[/tex]

When x = -12, y= 8

Put x = -4

[tex]y = \frac{3}{4} x + 17\\y= \frac{3}{4} (-4) + 17\\y=3(-1)+17\\y=-3+17\\y=14[/tex]

When x = -4, y = 14

Put x = 8

[tex]y = \frac{3}{4} x + 17\\y= \frac{3}{4} (8) + 17\\y=3(2)+17\\y=6+17\\y=23[/tex]

So, when x = 8, y = 23

The range of  the function y = 3/4 x + 17 when the domain is -12, -4, 8​ is 8,14,23

Answer:

The range of  the function y = 3/4 x + 17 when the domain is -12, -4, 8​ is 8,14,23

Answer:

now how did you knew people was doing it

Step-by-step explanation:

it C trust

Answer:

The answer is 28 (option D)

Step-by-step explanation:

Im big Brain

Answer:

8.49

Step-by-step explanation:

Answer:

y= 3/2x - 8

Step-by-step explanation:

Hopes Helps

Answer:

a , c , d

Step-by-step explanation:

Answer:

Fwee pointz, wite? bc ppl already answered XD it from over a week ago too

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

Answer:

a = −1 or a = 7

Step-by-step explanation:

Let's solve your equation step-by-step.

( a − 7 ) ( a + 1 ) = 0

Step 1: Simplify both sides of the equation.

a^2 − 6a − 7 = 0

Step 2: Factor left side of equation.

( a + 1 ) ( a − 7 ) = 0

Step 3: Set factors equal to 0.

a + 1 = 0 or a − 7 = 0

a = −1 or a = 7

Answer:

yes

Step-by-step explanation:

Given

x > - 6

That is if x is greater than - 6 then it is a solution

x ∈ { - 5, - 4, - 3, - 2, - 1, 0, 1, 2, 3, 4, 5, .... } ← are all valid solutions

Thus 5 is a solution to x > - 6

Answer:

point A = (3,9)

point D = (9,3)

point B = (6,5)

point C = (5,6)

Step-by-step explanation:

there's not really much to explain so yeah.

so the one located at 3,9 would be A

the one that says 9,3 that would be D

the one that says 6,5 would be B

and 5,6 would be C

Step-by-step explanation:

what u should do is to start from the x axis which is at the bottom so eg u have 4,5...4 would go at the X axis and the 5 would go at the Y axis..so u should always start from the x axis basically

hoped this helped

Answer :with what

Step-by-step explanation:

Answer:

33.8cm^2/ 2.6= 13cm

Step-by-step explanation:

area of a parallelogram= b (x) h

so all you do is the inverse in these kind of situations

Answer:

21/8

Step-by-step explanation:

okay so what we have to do is called flip n' multiply, so we leave the first fraction the way it is and the second one, we flip. so instead of 3/9, it would be 9/3. now we just do 7/8 times 9/3 to get 63/24 which I believe will be simplified to 21/8

Answer:

Seven eighths divided by three ninths is equal to twenty-one eights.

Step-by-step explanation:

The easiest way to divide one fraction by another is to simply multiply the first one by the second one.  It's that easy:

[tex]\frac{7}{8} \div \frac{3}{9}[/tex]

is exactly the same as:

[tex]\frac{7}{8} \times \frac{9}{3}[/tex]

Which we can then solve by multiplying the numerators by each other and multiplying the denominators by each other

[tex]\frac{7}{8} \times \frac{9}{3}\\\\ = \frac{7 \times 9}{8 \times 3} \\\\ = \frac{63}{24} \\\\ = \frac{21}{8}[/tex]

Another way you can solve it is by noting that in the second number, both the numerator and denominator are divisible by 3, which gives a way to simplify before doing the division:

[tex]\frac{7}{8}\div \frac{3}{9}\\\\= \frac{7}{8}\div \frac{1}{3}\\\\= \frac{7}{8}\times \frac{3}{1}\\\\= \frac{7}{8}\times 3\\\\= \frac{21}{8}[/tex]

Answer:

Step-by-step explanation:

The sum of measures of angles in triangle is allways 180°

So:

   x + 53° + 60° = 180°  {subtract 113° from both sides}

   x = 67°

Answer:

3.89

Step-by-step explanation:

You just divide 15.56 by 4.... and that's how you get the answer :)

Answer:

i think $1.12. maybe

Step-by-step explanation:

Answer:

the required ratio is 7 : 232

Step-by-step explanation:

by solving both sides we get ,

=》7 - ( 7-7 ) : 8 × 29

=》7 - 0 : 232

=》 7 : 232

it's the required ratio ,

i hope you got it .

Answer:

Counterclockwise

Step-by-step explanation:

The cartesian plane is divided into four quadrants. These are numbered from I through IV, starting with the upper right and going around counterclockwise. Hope this helps!

Answer:

Counterclockwise

Answer:[tex]4m^{3}-9m^{2}-m+25[/tex]

Step-by-step explanation: