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3 years ago

A student pulls out ten marbles: three were red, two were blue, and five were green. In the next handful, the

Mathematics

1 answer:

artcher [175]3 years ago

3 0

Answer:

Step-by-step explanation:

To get from 10 to 70, you multiply by 7. Just do the rest to all the other numbers, and red = 21.

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Which of the expressions below have exactly 3 terms? Select all that apply.

Fynjy0 [20]

Answer:

C. 6x + 9 - 3x^2

Step-by-step explanation:

We have 4 expressions and are being asked which has 3 terms.

When it comes to terms, terms are numbers that are different, it could be separated through a variable, square root, symbol, e.t.c.

So when looking for an answer, we need 3 numbers with different variables or symbols, let's look

A. only has two, 10x and 8. Therefore it is wrong.

B. has 4 terms, 3x^3, 6x^2, 9x, and 12. Therefore it is wrong.

C. is correct because it has 3 terms, 6x, 9, and 3x^2.

D. has 2 terms, 833 and 12x, though 16 is there, it is the same as 833, therefore not counting it as its own term.

7 0

3 years ago

Work out the percentage change to 2 decimal places when a price of £8.95 is increased to £10.

kicyunya [14]

Answer:

12% increase

Step-by-step explanation:

Divide the difference between the two prices by the original price:

1.05/8.95

= 0.12

So, the percent change is 12%

6 0

3 years ago

Can someone help me make an inequality? Problem: Eight less than a number X is at least 17

ioda

Set up an inequality:
x-8 $\geq$ 17
x $\geq$ 25

8 0

3 years ago

A gym has 200 members who pay $30 per month for unlimited use of the gym’s equipment. A survey of the members indicates that for

Bas_tet [7]

Given:

Current revenue = $6000

R(f)= -100f^2 + 400f + 6000
where f is a whole number of $5 fee increases

We are told to find f, when R(f) < 6000

Since R(f)= -100f^2+400f+6000

R(f) < 6000 ⇒ -100f^2+400f+6000 < 6000

Subtract 6000 from both sides

-100f^2 + 400f + 6000 - 6000 < 6000 - 6000

-100f^2 + 400f < 0

⇒ 400f - 100f^2 < 0

Divide the equation by 100

400f/100 - 100f^2/100 < 0/100

4f - f^2 < 0

Add f^2 to both sides of the equation

4f - f^2 + f^2 < 0 + f^2

4f < f^2

Divide both sides by f

4f/f < (f^2)/f

4 < f

⇒ f > 4

⇒ f ≥ 5

Therefore, for 5 or more numbers of $5 fee increases, the revenue from fees will actually be less than its current value.

8 0

3 years ago

Haley's car gets at least 18 miles per gallon. If she plans a trip that is 200 miles, what is the minimum number of gallons she'

mote1985 [20]

Needed gallons for 18 miles = 1
Needed gallons for 200 miles = (1/18)*200
= 11.11 gallons

6 0

4 years ago

Read 2 more answers