All categories

3 years ago

Randy and Stacy used models to find 0.3 of 0.5.Whoses model make sense who's doesn't. Look at the picture down below.

Mathematics

1 answer:

amid [387]3 years ago

4 0

Randy's problem makes sense and Stacy's problem doesn't ( I'm doing that problem too xD)

You might be interested in

Guys help me please I need the solution. Find x and y

nignag [31]

X would be 4 I believe

4 0

3 years ago

A news agency publishes results of a recent poll. It reports that candidate A leads candidate B by 10% because 45% of the poll p

natali 33 [55]

We need to use the formula to find Margin of Error but through the sample proportion, that is

$E=z*\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$

We will use a 95% confidence interval, that is a z value of 1.96 (Search in a Normal distribution table)

A) For A our $\hat{p}$ (proportion) is equal to 0.45. So applying the formula,

$E=1.96*\sqrt{\frac{0.45(1-0.45)}{900}}$

$E=3.25\%$

B) We make the same of point A, but change our proportion to 0.35

$E=1.96*\sqrt{\frac{0.35(1-0.35)}{900}}$

$E=3.116\%$

c) We need to calculate the SE through proportion for 0.1, that is

$SE = \sqrt{(\frac{\hat{p_1}(1-\hat{p_1})}{n})+(\frac{\hat{p_2}(1-\hat{p_2})}{n})}$

Then our Error is given by,

$E=z*SE$

$E=1.96*\sqrt(0.45*\frac{0.55}{900}+0.35\frac{0.65}{900}$

$E=0.045$

7 0

3 years ago

Please help Meeeeeeeeeee

sweet [91]

Answer:

9 ≤ p

Step-by-step explanation:

-18 ≤ -3p

-18/-3 ≤ p

9 ≤ p

6 0

2 years ago

Read 2 more answers

Sweaters cost $39 each. This is $15 more than the price of a cap. Over the season, 725 caps were sold. What was the total sales

Leokris [45]

The price of a cap is 15 less than the sweater:

39-15 = $24

Multiply the price of a cap by amount sold:

725 x 24 = $17,400

4 0

3 years ago

Show that the two triangles given beside are similar and calculate the lengths of sides PQ and PR.

Rina8888 [55]

9514 1404 393

Answer:

ΔABC ~ ΔPQR
PQ = 8
PR = 14

Step-by-step explanation:

Angles A and P are marked congruent; angles B and Q are marked congruent, so the triangles are similar by the AA similarity postulate. The similarity statement can be written ...

ΔABC ~ ΔPQR by AA similarity

The ratio of sides of PQR to ABC is the ratio QR/BC = 12/6 = 2. That is, each side in the larger triangle is 2 times the length of the corresponding smaller side.

PQ = 2·AB = 2·4 = 8

PR = 2·AC = 2·7 = 14

The side lengths of interest are ...

PQ = 8, PR = 14

5 0

3 years ago