Write an exponential function whose graph passes through the points (0,-2) and (2,-50)

Answers

Answer 1

Answer:

first sub in (0,-2) to get

-2 = ab^0, but b^0 = 1

so a=-2

so far we have

y = -2b^x

now use the other point (2,-50)

-50 = -2(b^2)

b^2 = 25

b= ±5

however in exponentional equations the base is usually positve, so now you have

y = -2(5^x)

sub in x=-2 and you got it.

Step-by-step explanation:

hope it helps..


Related Questions

What is the slope and y-intercept of y-6x=4?

Answers

Answer:

Slope: -6 Y-intercept: -4

Step-by-step explanation:

You have to put the 4 on the same side as the expression so that y-6x-4=0 so the -6x is the slope and the -4 is the y-int because of y=mx+b

How many times bigger is 315 compared to 312?



Do not include units (times bigger) in your answer.

Answers

Answer:

105/104

Step-by-step explanation:

you divide 315 divided by 312 and you get 105/104.

to check it you do 312 times 105/104 and you get 315 to be your answer! Hope this helps ;)

105/104 times the number 315 bigger than the number 312.

What is multiplication?

Multiplication is an operation that represents the basic idea of repeated addition of the same number. The numbers that are multiplied are called the factors and the result that is obtained after the multiplication of two or more numbers is known as the product of those numbers.

The given numbers are 315 and 312.

Number of times 315 is bigger compared to 312 is

315/312

= 105/104

Hence, 105/104 times the number 315 bigger than the number 312.

Learn more about the multiplication here:

https://brainly.com/question/1562995.

#SPJ3

Hannah & Sal share 24 sweets.
5
1
Hannah gets - of them. Sal gets - of them.
NO
How many sweets do they each get?
24​

Answers

Answer:

Hannah = 20, Sal = 4

Step-by-step explanation:

Total number of sweets = 24

Ratio in which the sweets was shared;

Hannah : Sal = 5 : 1

Hannah gets:

Hannah = 5 / ( 5+1)  * 24 = 5/6  * 24 = 5 * 4 = 20

Sal gets:

Sal = 1 / ( 5+1)  * 24 = 1/6  * 24 = 1 * 4 = 4

Find the area of a sector with a central angle of 7.2 radians and a radius of 14 units

Please include steps

Answers

Answer:

[tex]\boxed {\boxed {\sf a= 705.6 \ units^2 }}[/tex]

Step-by-step explanation:

Since we are given the central angle in radians, we should use this formula for the sector area:

[tex]a=\frac{1}{2}r^2 \theta[/tex]

where r is the radius and θ is the angle in radians.

The radius is 14 units and the angle is 7.2 radians.

[tex]r= 14 \ units \\\theta= 7.2[/tex]

Substitute the values into the formula.

[tex]a= \frac{1}{2} (14 \ units)^2 (7.2)[/tex]

Solve the exponent.

(14 units)²= 14 units* 14 units =196 units²

[tex]a=\frac{ 1}{2} (196 \ units^2)(7.2)[/tex]

[tex]a=\frac{ 1}{2}(1411.2 \ units^2)[/tex]

Multiply by 1/2 or divide by 2.

[tex]a= 705.6 \ units^2[/tex]

The area of the sector is 705.6 square units.

Write the equation in slope intercept form.
(-3, 1) and (-2, 0)

Answers

Use the slope formula and slope-intercept form y=mx+b to find the equation.

Answer:
y=−1/5x + 2/5

After taxes, Darius made $18,518.50 for winning the national fortnite competition. If taxes were 50% how much did Darius win

Answers

$9,259.25 would be the answer

What is the y-intercept of this equation? y= 5x + 2

Answers

2 because that’s how the equation is

Answer:

(0,2)

Step-by-step explanation:

Just substitute y for 0 and solve.

Hope this helps :)

PLEASE HELP ASAP WILL MARK BRAINLIEST

Answers

Answer: 314 mm

Step-by-step explanation:

Area of a circle is π*r^2

r is radius and π is 3.14

here the radius is 10

3.14 * 10^2 = 3.14 * 100 = 314

f(x) = 8 – 3x
Evaluate f(9)​

Answers

f(x) = 8 - 3x

f(9) = 8 - 3(9)
= 8 - 27
= -19

hope this helps!

Find the measure of ABD for rectangle ABCD

Answers

The angle measure is 90°

rate of change y=5x+10

Answers

Answer:

5

Step-by-step explanation:

The equation [tex]y=5x+10[/tex] is given in slope-intercept form. Slope-intercept form is a way of writing the equation of a line in the format [tex]y=mx+b[/tex], such that the coefficient of the parameter (x) is the slope, and constant (b) is the y-intercept. What that essentially means is,

[tex]y = mx + b\\\\m=slope\\b = y-intercept.[/tex]

The slope of a line is its rate of change, and the y-intercept is where the graph of the line intersects the y-axis. One can apply this knowledge here by saying that, the equation [tex]y=5x+10[/tex] is given in the slope-intercept form, and the coefficient ([tex]m[/tex]) equals ([tex]5[/tex]), therefore the slope is ([tex]5[/tex]).

ahh can someone help me please

Answers

4 + ( 3 • 65 )
4 + 195
199

Answer: $199

Pls help *waiting*.

Answers

Answer:

7 im guessing, thats what i got anyway

Step-by-step explanation:

pls help!! i really need it. Whoever answers first will get brainliest

Answers

The awnser should be The third one

What is 2/5 divide by 3/4

Answers

Answer:

8/15

Step-by-step explanation:

(2/5)/(3/4)=(2/5)(4/3)=8/15

Answer:

0.53

Step-by-step explanation:

I used a calculator :)

A pie chart uses 360 degrees to represent 45 people. How many people are represented by an angle of 152 degrees

Answers

Answer:  19 people will be represented by an angle 152 degrees.

Step-by-step explanation:

Set up a  proportional relationship to solve for this

[tex]\frac{360}{152} = \frac{45}{y}[/tex]        Cross multiply

360y = 6840   Divide both sides by 360

y =  19

Lisa set a weekly goal of jogging 18 miles. In each of the first 3 days, he jogged 2 2/3 miles. How many more miles must he run to reach his goal?​

Answers

Answer:

Step-by-step explanation:

3(2+(2/3))+x=18

3(8/3)+x=18

(24/3)+x=18

8+x=18

x=10

He must run another ten miles.

Answer:

10.88

Step-by-step explanation:

3 * 2 3/8 = 6 9/8 = 7 1/8 miles

im horrible with triangles​

Answers

Answer:

6 a - 13 b - 21 c - 13 d - 29 e -29 f - 122

y=15 and x=3

Step-by-step explanation:

B. Order the following decimals from least to greatest.
21. 3.21, 3.021, 3.12, 3.121
22. 1.3, 1.309, 1.03, 1.39
23. 0.09, 0.012, 0.0089, 0.0189
24. 4.01, 4.0011, 4.011, 4.101
25. 5.5, 5.059, 5.0090, 5.05​

Answers

Answer:

I think:

21) 3.021, 3.120, 3.121, 3.21

22) 1.03, 1.3, 1.09, 1.39

23) 0.0089, 0.012, 0.0189, 0.09

24) 4.0011, 4.01, 4.011, 4.101

25) 5.0090, 5.05, 5.059, 5.5

Answer:

21. 3.021, 3.12, 3.121, 3.21

22. 1.03, 1.3, 1.309, 1.39

23. 0.0089, 0.012, 0.0189, 0.09

9. Spanky is four inches less than of Lanky's height. Write an expression for
Spanky's height.
Algebraic Expression:
Spanky
Lanky is 72 inches tall. How tall is Spanky?
Algebraic Expression
Numerical Expression
Answer
You pick the variable for
Lanky's height! Lanky

Answers

68 inches tall is Sparky

Step-by-step explanation:

just take of 4 tall of lanky then you will get the tall

Will give, Branliest.​

Answers

m=2

y=7

m=10

a=28

t=65

h=8

Answer:

m=2

y=7

m=10

a=28

t=65

h=8

Step-by-step explanation:

hey what's
[tex]4 {}^{2} [/tex]

Answers

16 is the answer cause it’s 4 × 4

Answer:

16

Step-by-step explanation:

It's very easy.

4×4=16

PPPLLLZZZ HHHEEELLLLPPPPP!!!!!!!

Joanne earned $57 in tips yesterday. Her earnings were $13 less than 7/8 of Erin's earnings.

1. Write an equation to represent Erin's earnings, x.

2. How much did Erin earn in tips?

Answers

9514 1404 393

Answer:

57 = (7/8)x -13$80

Step-by-step explanation:

1. I find it convenient to use variable names that remind me what they stand for. Here, we can use "j" to represent Joanne's earnings, and "e" to represent Erin's earnings.

  j = 57 . . . . . Joanne earned $57

  j = (7/8)e -13 . . . . . Joanne's earnings were $13 less than 7/8 of Erin's

Substituting for j, we get one equation for Erin's earnings

  57 = (7/8)e -13

Using 'x' for Erin's earnings, this is ...

  57 = (7/8)x -13

__

2. We can solve the equation as follows:

  70 = 7/8x . . . . . . add 13

  80 = x . . . . . . . . . multiply by 8/7

Erin earned $80 in tips.

Answer:

Step-by-step explanation:

57 = ⅞x - 13

x= 70(8/7) = $80

help me out I will gave points​

Answers

Answer:

c

Step-by-step explanation:

Help ASAP I need it by tonight

Answers

Answer:

D. r  ≤  − 1

good luck, i hope this helps :)

Answer:

Step-by-step explanation:

Hello,

1. Follow PEMDAS, for instance, which is Parentheses, Exponents, Mult., Div., and so on.

This will help you simplify on each side of the inequality sign.

2. Signs of inequalities will switch (> becomes <, and < becomes >) when dividing by a negative number on both sides of an inequality.

Try to work with this first. If you need more help, let me know.

Please help me will give brainlest to correct answer and simple/small explanation

Answers

Answer:

the measure of the angle is 72

x=36

Step-by-step explanation:

we can make an algebraic equation using the info given

2x+80=152

2x=72

x=36

the measure of the angle is 72

Answer:

x = 36, the measure of the angle is 72

Step-by-step explanation:

We can see this because Angle 2x and Angle 72 are verticle angles. Based on this information we know that verticle angles are congruent to each other, meaning the are the same. So that leaves us with an equation to figure out x.

2x = 72

[tex]\frac{2x}{2}[/tex] = [tex]\frac{72}{2}[/tex]

x = 36

· y = -7x-2
Y+ 3 = -7x+1
(2,3)
O
no solution
an infinite number of solutions

Answers

Answer:

Given, y+3=10

⟹y+3−3=10−3 ....[Subtracting 3 from both sides]

⟹y=7

Answer:

No solution

Step-by-step explanation:

Because it will give zero

What is the greatest common factor of 48, 24, and 32?

Answers

Answer:

8

Step-by-step explanation:

Answer:

It is 2

Step-by-step explanation:

The greatest common factor is 2 because 2×16=32

also works for 24 because 2×24=48

then yes it works again for 2×12=24

division is also very helpful

-12 - 12x = 36 please help me with this problem due today.​

Answers

Answer:

x = -4

Step-by-step explanation:

-12 -12x = 36

add 12 to each side of the equation

-12x = 48

divide both sides by -12

x = -4

Packages of ramen noodles are on sale at the grocery store for $.20 each. Lucy decides to stock up since she had a $3 off coupon. If she can spend no more than $8, how many packages of ramen could she buy?

Answers

Answer:

55

Step-by-step explanation:

.20*55=11-3=8

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