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
amid [387]
4 years ago
14

Each morning Papa notes the birds feeding on his bird feeder. So far this month, he has seen 59 blue jays, 68 black crows, 12 re

d robins, and 1 cardinal.
If 300 birds visit Papa'S bird feeder, how many blue jays can he expect to see?

A) 126
B) 75
C) 140
D) 177
Mathematics
2 answers:
Debora [2.8K]4 years ago
7 0

Answer:

Option A) 126

Step-by-step explanation:

This month Papa has seen on his bird feeder the birds are :

Blue jays = 59

Black crows = 68

Red robins = 12

Cardinal = 1

Total birds are seen in the month

= 59 + 68 + 12 + 1 = 140 birds

Out of 140 birds there are 59 Blue jays. Now we calculate what percentage of blue jays visited this month.

59 Blue jays out of 140 birds

To get the percentage :

\frac{59}{140}×100

= 42.14% rounded to  42% approx.

Out of 140 birds blue jays are 42%.

If 300 birds visit Papa's bird feeder, expected numbers of blue jays are :

= 42% of 300

= 0.42 × 300 = 126 blue jays

126 blue jays are expected to see on Papa's feeder.

Dvinal [7]4 years ago
7 0

I thin that it is A)126


You might be interested in
Math is so hard man but can someone help me
nataly862011 [7]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The discriminant of a quadratic equation is equal to -8, which statement describes the roots?
Maslowich

Answer:

  (a)  There are two complex roots

Step-by-step explanation:

The discriminant of a quadratic function describes the nature of its roots:

  • <u>negative</u>: two complex roots
  • <u>zero</u>: one real root (multiplicity 2)
  • <u>positive</u>: two distinct real roots.

__

Your discriminant of -8 is <em>negative</em>, so it indicates ...

  There are two complex roots

_____

<em>Additional comment</em>

We generally study polynomials with <em>real coefficients</em>. These will never have an odd number of complex roots. Their complex roots always come in conjugate pairs.

6 0
2 years ago
13. The radius of Earth is approximately 6.4 x 100 m. Use the formula V = 4/3pr^3
romanna [79]

<u>We are given</u>

  • Radius of Earth; 6.4 x 100 meters = 640 meters

Clearly, the shape of the earth is a sphere. Thus, to determine the volume of the earth, we will use a formula that determines the volume of a sphere.

\implies \text{Volume of sphere =} \   \dfrac{4\pi r^{3}}{3}

When we substitute the radius in the formula, we get;

\implies\text{Volume of sphere} = \dfrac{4\pi (640)^{3}}{3}

\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}

Take π as 3.14

\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}

\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}

Simplify the numerator;

\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}

\implies \text{Volume of sphere} = \dfrac{3292528640}{3}

Divide the numerator by 3;

\implies \text{Volume of sphere} = \dfrac{3292528640}{3}

\implies \text{Volume of sphere} = \boxed{1097509546.67 \ \text{m}^{3} } \ \ \ (\text{Estimated})

4 0
2 years ago
A scale drawing of a rectangular park is 5 inches wide and 7 inches long. The actual park length is 280 yards. What is the width
Anastaziya [24]

Answer:

56,000

Step-by-step explanation:

7 inches → 280 yards

1 inch → 280 ÷ 7 = 40 yards

5 inches → 40 x 5 = 200 yards

Area = 280 x 200 = 56 000 yards

3 0
3 years ago
Read 2 more answers
Find the center and radius, then write the standard equation of this circle
kirza4 [7]

Center is at (0, 0) and make sure you label it on the diagram
Radius is 5 units
Equation of circle is
(X-0)^2 + (y-0)^2 = 5^2
X^2 + y^2 = 25
8 0
3 years ago
Other questions:
  • Copy link
    8·1 answer
  • How do I figure out 2/3(5*4)/3+6/7=
    8·1 answer
  • I need this answer asap
    13·1 answer
  • Write 24 minutes to 3 hours as a ratio in its simplest form
    6·2 answers
  • Find the common ratio of the geometric sequence 0.1, 1, 10, 100, ... Write your answer as an integer or fraction in simplest for
    15·1 answer
  • Someone help me I need to get this finished by tomorrow ASAP
    10·1 answer
  • See the picture <br><br> Please help
    14·1 answer
  • Can somebody give me the reasoning and step-by-step solution?
    13·1 answer
  • 0.00000007 as a fraction
    12·1 answer
  • Melissa is planning a rectangular vegetable garden with a square patch for tomatoes
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!