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
Irina18 [472]
3 years ago
14

Plzz answer these 3 questions....​

Mathematics
1 answer:
lisov135 [29]3 years ago
6 0
3 -> b
4-> b

Not 100% sure about the 4th one but i think it is correct
You might be interested in
Jeff can paint 28 sqaure feet every 30 mintues angela can paint 50 square feet every hour who can paint faster,and by how many s
Gnesinka [82]

Answer:

6/1 square feet per hour. Jeff can paint faster.

Step-by-step explanation:

So, to get Jeff's square feet to 60 minutes, you do 30x2= 60. So, you do that to 28. 28x2= 56. 56/1 is greater then 50/1. So 56-50= 6. Jeff can paint 6 square feet per hour, greater than Angela.

Hope this helped!

4 0
4 years ago
Your parents charge a family ski trip of $3000 on a credit card, the simple interest rate is 20%. The charges are paid after 6 m
torisob [31]

Answer:

$300

Step-by-step explanation:

In this question, we are simply asked to calculate the simple interest on $3000, at a rate of 20% paid after 6 months.

We can do this as follows. Mathematically, it should be remembered that:

S.I = PRT/100

In this case, we lost out the individual values as follows:

P = $3000, R = 20% and T = 6 months = 0.5years, S.I = ?

We substitute the parameters into the equation:

S.I = (3000 * 20 * 0.5)/100 = $300

7 0
3 years ago
Emily's snack allowance at school exceeds $7. Her snack allowance is one-fourth of her monthly allowance. Write and solve an ine
Jobisdone [24]

Answer:

x>28

Step-by-step explanation:

x>7

4x>28

4 0
3 years ago
Read 2 more answers
Square root of the quantity x minus 2 end quantity plus 8 equals x
Butoxors [25]

ANSWER

x=11

EXPLANATION

We want to solve the equation:

\sqrt{x - 2}  + 8 = x

Add -8 to both sides:

\sqrt{x - 2} = x - 8

Square both sides of the equation to get:

(\sqrt{x - 2} )^{2} =( x - 8)^{2}

x - 2 =  {x}^{2}  - 16x + 64

Rewrite in the form ax² +bx+c=0

{x}^{2}  - 16x - x + 64 + 2 = 0

{x}^{2}  - 17x + 66 = 0

Factor to get,

(x - 11)(x - 6) = 0

This implies that,

x = 11 \: or \: x = 6

Checking for extraneous solutions.

When x=6, the original equation becomes,

\sqrt{6- 2}  + 8 = 6

\sqrt{4 }  + 8 = 6

2+8= 6 is not true.

x=6 is an extraneous solution.

When x=11, the original equation becomes,

\sqrt{11- 2}  + 8 = 11

\sqrt{9}  + 8 = 11

3 + 8 = 11

This is true, hence x=11 is the only solution.

5 0
3 years ago
David spent 1/3 of his money on books. He spent another 1/6 of it on stationery and $50 on a radio. If he had $100 left, how muc
horsena [70]

Answer:

You have to work backwards here

so if you had 100 dollars left and u spent 50 on a radio

100+50=150

Then You spent a 1/6 of it on stationery

So you mustve had 5/6 money left or 150 dollars

so you multiply that to find that

5/6=150/x

5x=900

x=180

so add 30 dolalrs to 150 and you have 180.

the you spent a third

you repeat the same process

the you have ur ANSWER

5 0
3 years ago
Other questions:
  • The price of an item selling at 150% of its $63 value is
    11·2 answers
  • Factor 60 – 36w to identify the equivalent expressions.
    6·1 answer
  • If (c) were f(k) = -3/k+2, what value of k would be excluded from the domain?
    6·1 answer
  • Lois and Joe start saving pennies on new years day. Lois has 5 pennies and saves 2 pennies every day. Joe starts with 4 pennies
    6·1 answer
  • Please help me with this homework
    7·1 answer
  • Find the measure of an angle that is positive and less than 360° in standard position for each reference angle.
    7·1 answer
  • B. find the quotient of 1/4 ÷ 7/16 ​
    10·2 answers
  • Greg has entered a cycle race of 125 km. he rides the first 85 km in 2.5 hours. he rides the rest of the way in 2 hours. How muc
    6·1 answer
  • How do you find the legs of a right triangle when only given the hypotenuse?
    5·1 answer
  • Help!!!!!!!! Solve x/5 -3<5
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!