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
Harrizon [31]
3 years ago
10

#18-7: Find the radius of a circle that has an area of 4.5216 cm^2. Use 3.14 for pi.

Mathematics
1 answer:
sertanlavr [38]3 years ago
8 0

Answer:

r = 1.2 cm

Step-by-step explanation:

Area (A) of a circle = πr²

r² = \frac{A}{Pi}

r = \sqrt{\frac{A}{Pi} }

r = \sqrt{\frac{4.5216}{3.14} } = 1.2 cm

You might be interested in
What is the answer to this math question!?
Nostrana [21]

Answer:

C) 37

Step-by-step explanation:

1/2(PQ)=RQ

2.5x+17=6x-11

17=3.5x-11

28=3.5x

x=8

RQ=6(8)-11

RQ=48-11

RQ=37

5 0
2 years ago
Read 2 more answers
Estimate the amount of gas left in this cars gas tank with a fraction
Rufina [12.5K]
It looks a little less than 1/2 or 4/8, so probably 3/8 of the gas is left.
3 0
3 years ago
If the value of "Y" varies directly with "X" and y=-8,when x=20,find "Y"if x=-4
kherson [118]

Answer:

y is 8/5 when x = -4.

Step-by-step explanation:

If the value of "Y" varies directly with "X", we can write y = kx, where k is the constant of proportionality.

If "y=-8,when x=20," then we can find k:    -8 = 20k, or k = -2/5.

Then y = (-2/5)x.

If x = -4, then y = (-2/5)(-4) = 8/5

y is 8/5 when x = -4.

6 0
3 years ago
An investor invests $2,500 into a mutual fund and earns 5.75% on the principle for each of three years. How much interest has ac
HACTEHA [7]

Answer:

Interest in 3 years = $456.52

Step-by-step explanation:

As we know the the formula of compound interest

Total amount =  A(1+\frac{r}{n})^{nt}

Here n = number of times amount is compounded

r = rate of interest

t = period

Here A = $2500

r = 0.0575

n = 1 (compounded annually)

t = 3 years

Therefore amount after 3 years

P=2500(1+\frac{.0575}{1})^{3}

P =2500(1.0575)³

  = 2500×1.18

  = $2956.52

We have to calculate the interest then

Interest = $2956.52-$2500 = $456.52

So after 3 years interest gained = $456.52

8 0
3 years ago
Read 2 more answers
Simplify,write equivalent expressions. 1/6(15a+20b)
lutik1710 [3]
1/6* (15a+20b)
= 1/6* 15a + 1/6* 20b (Distributive property)
= 2.5a + 10/3*b

The final answer is 2.5a+ 10/3b

Hope this helps~
6 0
3 years ago
Other questions:
  • Evaluate 14 + (-8) ÷ 2 · -3. -9 15 26 -30
    5·1 answer
  • (7x – 2y) – (3x + 5y)
    11·2 answers
  • how many liters of 15% acid and 33% acid should be mixed to get 120 liter of 21% acid? what's the equation for this?
    8·1 answer
  • What numbers multiplie to equal -30 but add to equal -1
    10·1 answer
  • Do the thing<br> nee ASAP answer, will give brainliest
    15·1 answer
  • Expand (x+3)(x+2)<br> And can you explain how to do it
    13·2 answers
  • Identify the value of a if<br> y= ax+ 7x + 2<br> and the point (2, 12) is on the graph.
    9·1 answer
  • 1. The graph of f(x) = |x| is shown below. Write the equation for the stretched graph, g(x).
    5·1 answer
  • Tara placed $1200 in a savings account which compounds interest continuously at a rate of 1.4%.
    15·2 answers
  • Rectangle WXYZ has vertices at W(−6, 1) , X(−1, 6) , Y(2, 3) , and Z(−3, −2) .
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!