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
Alisiya [41]
3 years ago
15

Please solve these sumsfor 10 points​

Mathematics
2 answers:
il63 [147K]3 years ago
6 0

Answer:

hope its helpful for you

laila [671]3 years ago
3 0

Answer:

(i) = 3

(ii) = 20

Step-by-step explanation:

x = 1

y = -2

z = -1

(i) 4x - 3y + 7z

4(1) - 3(-2) + 7(-1)

4 + 6 - 7 = 3

(ii) 2x³ - 6y²z + 3xyz²

2(1)³ - 6(-2)²(-1) + 3(1)(-2)(-1)²

2 + 24 - 6 = 20

You might be interested in
1. Write the solution set in interval notation: 3x-2 > x-4 or 7x-5 < 3x+3
Yakvenalex [24]
3x-2>x-4\ \ | subtract\ x\ \ \ \ \textbf{or}\ \ \ \ 7x-5-4\ \ | add\ 2\ \ \ \ \ \textbf{or}\ \ \ \ 4x-5-2\ \ \ \ \  \textbf{or}\ \ \ \ \ 4x-1\ \ \ \ or\ \ \ \ x
5 0
3 years ago
Read 2 more answers
In a city, 60% of the residents live in houses and 40% of the residents live in apartments.Of the people who live in houses, 20%
DIA [1.3K]

Answer:

0.75 or 75%

Step-by-step explanation:

The probability that a resident lives in a house and owns their own business is:

P(H\cap B)=0.6*0.2\\P(H\cap B)=0.12

The probability that a resident lives in an apartment and owns their own business is:

P(A\cap B)=0.4*0.1\\P(A\cap B)=0.04

Therefore, the probability that a person lives in a house, given that they own their own business is:

P(H|B) = \frac{P(H\cap B)}{P(H\cap B)+P(A\cap B)}\\P(H|B) = \frac{0.12}{0.12+0.04} \\P(H|B) = 0.75

The probability is 0.75 or 75%.

4 0
3 years ago
Twice a number increased by 5 is less then -9
polet [3.4K]

Answer:

2x+5<-9

Step-by-step explanation:

multiply the number by 2 and add 5

5 0
3 years ago
At a grocery store, a bag of 12 red apples costs $10.80 and a bag of 6 green apples costs $6.90.
Crazy boy [7]

Answer:

If you are trying to find the total it is $17.70, but if you are trying to find how much is each apple, it is .90 cents per red apple and $1.15 per green apple. I hope this helps!

Step-by-step explanation:

8 0
3 years ago
In a lab, a substance was heated by 6 °C each hour for 36 hours. What was the total change in temperature?
zubka84 [21]

Answer:

The temp increased by 360 degrees since 6x60 is 360

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Maria earns $80 per day working at a gas station. Write an algebraic expression to represent the amount of money she will earn i
    12·1 answer
  • Hacksaw’s Boats of St. Lucia takes tourists on a daily whale/dolphinwatch cruise. Their brochure claims an 80% chance of siting
    11·1 answer
  • Amira is painting a rectangular banner 2 1/4 yards wide on a wall in the cafeteria.
    7·1 answer
  • - 3 + 3x = 2x – 13 <br><br> I have to use more characters...
    11·1 answer
  • Exact length of line segment xy
    13·1 answer
  • What is the ratio of the number of girls playing soccer "36" to the girls playing basketball "38"
    6·1 answer
  • The equation p = 5s represents the perimeter p of a regular pentagon with side length s. what is the perimeter of a regular pent
    13·2 answers
  • Write 2x+3y=6 in slope-intercept form. <br> ahhhh i need help stat
    7·1 answer
  • Help fast will give brainlist
    5·1 answer
  • There are 9 members on a board of directors. If they must form a subcommittee of 3 members, how many different subcommittees are
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!