1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natita [175]
3 years ago
12

Find xif f(x) = 2x + 7 and f(x) = -1.

Mathematics
2 answers:
Natali [406]3 years ago
8 0

Answer: -4

Step-by-step explanation:

Solve 2x+7=-1

2x. =-8

x. =-4

nevsk [136]3 years ago
7 0

Answer:

-4

Step-by-step explanation:

To find the value you have to substitute x for -1. because f(x) = -1.

-2x + 7 = -1

-7= -7

-2x =-8

÷-2

x=-4

Hope it helps!

You might be interested in
Common core math if Amanda walks an average speed of 2.72 miles per hour, how long will it take for her to walk 6.8 miles
QveST [7]
2.5 (2 hours and 30 mins) hours. Distance (6.8) divided by time (2.72). 6.8/2.72= 2.5 
4 0
3 years ago
Two fair cubes, numbered 1 through 6, are tossed at the same time in order to advance on a game board. What is the probability t
DaniilM [7]
If the cubes are rolled independently, and assuming any face on the cube is as likely to occur as any other, then there is a 1/6 probability of rolling a 6, and rolling a 6 on both simultaneously is 1/6 * 1/6 = 1/36.
4 0
3 years ago
A group of students volunteered to finish a task in 25 days .1 Q of students did not come n the work could b completed in 35 day
SpyIntel [72]

Answer:

p=7Q/2

Step-by-step explanation:

Original number of students:

p students to do 1 job in 25 days.

Let r= the rate for 1 student.

pr*25=1

pr*25=1 is the work rate equation for p students.

Lesser number of students:

p-Q students came to do the job and time required was 35 days.

(P-Q)*r*35=1.

The unknowns are p, Q and r

Equate the original number of students and the lesser number of students

pr*25=(P-Q)*r*35

25rp=35rp - 35Qr

Collect like terms

25rp-35rp = -35Qr

Divide both sides by -5

-5rp+7rp=- 7rp

It can be re written as

7rp-5rp=-7Qr

2rp=7Qr

Make p the subject of the formula

p=7Qr/2r

p=7Q/2

p=7Q/2 is the original number of students

-10rp = -35Qr

The system of these two equations can be solved for p. See the THREE unknown

variables, p, r, and Q. You might assume that either r or Q would be a constant.

5 0
3 years ago
Given f(x) = -12x + 72, find x when f(x) = 24.
yarga [219]

Answer:

-216 is the answer

4 0
2 years ago
Read 2 more answers
Can someone help plzzz!!!
Naddika [18.5K]

Answer:

4

Step-by-step explanation:

4•4•4 = 64

7 0
2 years ago
Read 2 more answers
Other questions:
  • If a varies directly as b, and a = 28 when b = 7, find b when a = 5.
    12·2 answers
  • What is the equation of the linear function?
    6·2 answers
  • Jessica is baking a cake . the recipe says that she has to mix 96 grams of sugar into flour . jessica knows that 1 cup of this p
    10·1 answer
  • Each letter represents a question answer
    9·1 answer
  • You have just administered 3 tablets with a dose strength of 1.5mg tablets. What is the total dosage?
    9·2 answers
  • 71.700 rounded to the nearest hundredth
    15·2 answers
  • 2 7/10 -1 1/4 solving fractions
    15·1 answer
  • HELP PLZZZZZZZZZZZZZZ
    11·1 answer
  • I need help as fast as possible
    6·1 answer
  • How would you write "there were 3 times as many baby dinosaurs as adult dinosaurs" as an algebraic equation where x = baby dinos
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!