3 years ago

Find x if f(x)=-21: f(x)=2x+9

Mathematics

1 answer:

bazaltina [42]3 years ago

6 0

Answer:

The answer is -33

Step-by-step explanation:

f(x) = 2x + 9; f(x) = -21

= 2(-21) + 9

= -42 + 9

f(x) = - 33

Thus, The answer is -33

-TheUnknownScientist 72

You might be interested in

An architectural drawing lists the scale as 1/4 = 1. If a bedroom measures 3 1/2 by 5 1/4 on the drawing, how large is the bedro

mars1129 [50]

The bedroom is 14x21. I hope this helps :)

3 0

3 years ago

Read 2 more answers

60 cars to 20 cars indenify percent of change

Margaret [11]

Answer: -66.67%, but if the answer is supposed to positive then the answer is 66.67%.

* Hopefully this helps:) 

7 0

3 years ago

Kevin plants 11 packages of vegetable seeds in a community garden. Each package costs $1.64 with tax. What is the total cost of

vagabundo [1.1K]

$18.04

Easy math. Just multiply 11 by $1.64

3 0

2 years ago

How to show opposite sides on a parallelogram are congruent

Marta_Voda [28]

Answer:

I am attaching a image to understand my proof.

Step-by-step explanation:

PROVE:-

AB = DC

AD = BC

∠ ABD = ∠ BDC (alternate angles are equal )

∠ DBC = ∠ ADB (alternate angles are equal )

∴ Δ ADB ≅ Δ CBD ( by ASA rule )

DC = BA ( corresponding sides of ≅ Δ )

AD = CB ( corresponding sides of ≅ Δ )

Hence it is proved that opposite sides of parallelogram are congruent )

8 0

3 years ago

What speed must you toss a ball straight up so that it takes 4 s to return to you? Show your work.

vekshin1

1) Type of motion: constant acceleration.

2) acceleration, a = 9.8 m/s^2

3) time up = time down = 4seconds / 2 = 2 seconds

4) formula = Vf = Vo - a*t^2/2

Vf = 0 => Vo = a*t^2 / 2 = 9.8m/s^2 * (2 s)^2 / 2 = 19.6 m/s

Answer: 19.6 m/s

4 0

3 years ago

Find x if f(x)=-21: f(x)=2x+9​

Find x if f(x)=-21: f(x)=2x+9