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lidiya [134]
4 years ago
4

Which is an example of a survey involving quantitative data? the favorite food of each person the number of cavities each person

has had the color of the walls in each person’s bedroom the type of carNico wanted to determine the number of students in his school who buy school lunch. He walked around the cafeteria one lunch period looking to see whether every fifth person in the cafeteria purchased lunch or brought their own.
Which method did he use to collect his data?

survey
simulation
experiment
observational study that each person owns
Mathematics
2 answers:
slamgirl [31]4 years ago
4 0

Answer:

b, i tooooooooook thhhhhhhhhhheeeeee ttttteeeeeeeeessssssssttttttttt

Step-by-step explanation:

ss7ja [257]4 years ago
3 0

The <em><u>correct answers</u></em> are:

The number of cavities each person has; and observational study.

Explanation:

Quantitative data is data that can be described using numbers.  The only one listed that can be described with numbers is the number of cavities each person has.

Observational studies are ones in which a researcher observes but does not interfere.  Walking the cafeteria and seeing who has what type of lunch is a method of observation, so this is an observational study.

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Find the missing base (b1) of the trapezoid. Dimensions are in CM.
Alenkinab [10]

Answer:

b1 = 9 cm

Step-by-step explanation:

The formula for area of a trapezoid is

A = 1/2 (b1+b2) *h

We know Area = 135 CM ^2, Height = 10 CM, b2 = 18 cm

Substituting these in

135 = 1/2 (b1+18) *10

Multiply 1/2*10

135 = 5 (b1+18)

Divide both side by 5

135/5 = 5/5 (b1+18)

27 = b1+18

Subtract 18 from each side

27-18 = b1+18-18

9 = b1

5 0
3 years ago
Liam is saving up for a new cell phone. He uses the equation P= I + HB, where P is the cost
Stels [109]

Answer:

H=\dfrac{P-I}{B}

Step-by-step explanation:

Given the expression: P= I + HB

Where:

  • P = cost  of the phone Liam is saving for.
  • I = amount of money he started with.
  • H = number of hours he  babysits
  • B = hourly rate for babysitting.

We want to find an expression for H, the number  of hours Liam will need to babysit to save enough money for a cell phone.

Our goal is to isolate the variable H in the expression P= I + HB.

P= I + HB

Subtract I from both sides

P-I=I-I+HB

HB=P-I

Divide both sides by B

\dfrac{HB}{B} =\dfrac{P-I}{B}\\\\$Therefore\\\\H=\dfrac{P-I}{B}

4 0
3 years ago
What is 10 divided by 4 ?
viktelen [127]
Answer: 10 / 4 = 2.5
7 0
3 years ago
Read 2 more answers
If the quantity 4 times x squared times y squared plus 8 times x cubed times y to the fifth power all over 2 times x times y squ
motikmotik

Answer:

c=2

Step-by-step explanation:

(4x^2 y^2 + 8x^3 y^5) / (2x y^2) = 4x^2 y^2 / 2x y^2 + 8x^3 y^5 / 2x y^2 = 2x + 4x^2 y^3

Therefore, a = 1, b = 0, c = 2 and d = 3

4 0
3 years ago
Read 2 more answers
Two fifths of the girls in school signed up to play softball. An equal number of girls signed up to play pitcher, infield and ou
podryga [215]

The fraction of the girls signed up to play outfield is \frac{2}{15}

<em><u>Solution:</u></em>

Given that Two fifths of the girls in school signed up to play softball

An equal number of girls signed up to play pitcher, infield and outfield

So there are 3 equal groups formed from two fifth

This means that we could divide the 2/5 initial group into 3 equal smaller groups for each play pitcher, infield and outfield

Therefore, fraction of the girls signed up to play outfield is found by dividing \frac{2}{5} by 3

\text{ Fraction of girls play outfield } = \frac{\frac{2}{5}}{3}\\\\\text{ Fraction of girls play outfield } = \frac{2}{5} \times \frac{1}{3}\\\\\text{ Fraction of girls play outfield } = \frac{2}{15}

Thus fraction of the girls signed up to play outfield is \frac{2}{15}

4 0
4 years ago
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