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
just olya [345]
3 years ago
7

I need help on these questions please

Mathematics
1 answer:
Hatshy [7]3 years ago
3 0
1. 
7x^{2} + 15x - 8

2.
5f^{2} + 11f -2
You might be interested in
Solve for a. r=ab/a+b+c
Marta_Voda [28]

Answer:

r(A + B) = rA + rB,. (4). (r + s)A = rA + sA,. (5) r(sA)=(rs)A;. (6). A(BC)=(AB)C,.

4 0
3 years ago
Given that
nadya68 [22]

Answer:

25/3

Step-by-step explanation:

3x:10=5:2

proportions are basically ratios, and ratios are basically fractions, so we can cross multiply

3x*2=10*5

6x=50

x=50/6

x=25/3

8 0
2 years ago
Read 2 more answers
In a random sample of 75 individuals, 52 people said they prefer coffee to tea. 99.7% of the population mean is between 84/80/74
Dmitriy789 [7]
Using a 1-sample z-interval for the population proportion with confidence level 0.997, the sample probability is 0.69 with margin of error of 0.16, so between 0.69+0.16=0.85 of the population and 0.69-0.16=0.53 of the population prefers coffee.  84% and 54% are the correct answers.
7 0
3 years ago
Read 2 more answers
Solve the system of equations using any method.
fenix001 [56]
In addition or subtraction?
Y+8=4
Y-12=2x-8
+12
—————-
Y=2x+14
8 0
3 years ago
The solution of the equation x^2-x-2=3
Morgarella [4.7K]

Answer:

x^2 − x − 2 = 0

(x + 1)(x − 2) = 0

x + 1 = 0   ⇒   x1 = −1

x − 2 = 0   ⇒   x2 = 2

Min = (0.5, −2.25)

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • 108 - 271 + 215-_____= -103
    14·1 answer
  • What is x-2y=1, solve for y
    10·1 answer
  • What is the cube root of 0.008? A) 2 B) 0.2 C) 0.02 D) 0.002
    15·1 answer
  • Please help! i literally suck at geometry
    12·1 answer
  • 36/3 in simplest form
    5·2 answers
  • There are 40 students in a class and 35 of them are going on a field trip. What percent of the class is not going on the field t
    14·1 answer
  • PLS HELP. write as an expression. thank you:)
    12·1 answer
  • Subtracting decimals<br><br> 4 - 21
    12·1 answer
  • Cassidy's diving platform is 6 ft above the water. One of her dives can
    14·1 answer
  • Please help me with this
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!