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3 years ago

WILL GIVE BRAINLIEST!!!

Mathematics

1 answer:

Andrews [41]3 years ago

4 0

The 13 stripes alternate red and white: 7 red and 6 white.
Each of 13 stripes is (39 in. / 13) = 3 in. wide.
4 of the 7 red stripes are 39 in. long. The other 3 are 65 in. long.

The total area (l*w) of the flag is (65 in.)*(39 in.)=2535 sq. in.

The red stripes make up an area (l*w) that is:
4*(area of short stripes) + 3*(area of long stripes)
Red area is 4*(39*3) + 3*(65*3) = 1053 sq in.

The fraction of the flag that is red is:
1053 sq. in. / 2535 sq. in.

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A survey of a local high school asked students to name their favorite subject. One out of every 12 students said that their favo

notka56 [123]

Answer:

408

Step-by-step explanation:

You would set up a proportion of 1/12 = 34/x. You would do the butterfly method and get 1x=408. Then divide 408 by 1 to get 408.

3 0

3 years ago

Read 2 more answers

last year genesis earned 72,832 and david earned 68,852.How much more did genesis earn than david PLEASE HELP I AM DOING A TEST

zaharov [31]

Answer: $3,980

Step-by-step explanation:

As the question is asking for the amount that Genesis earned over the amount earned by David, to find the answer, subtract David's earnings from that of David.

= Genesis's earnings - David's earnings

= 72,832 - 68,852

= $3,980

6 0

3 years ago

What is 1/2 +3 provide an answer please?

N76 [4]

I think the answer is 7/2. Which is also equal to 3.5 cookies. Because:

1/2 + 3/1
3/1 x2
1/2 + 6/2
= 7/2 = 3.5

8 0

4 years ago

Read 2 more answers

"Suppose we are testing the null hypothesis H0: = 20 and the alternative Ha: 20, for a Normal population with = 5. A random samp

mezya [45]

Complete question is;

Suppose we are testing the null hypothesis H0: μ = 20 and the alternative Ha: μ ≠ 20, for a normal population with σ = 5. A random sample of 25 observations are drawn from the population, and we find the sample mean of these observations is x¯ = 17.6. The P-value is closest to:

a. 0.0668.

b. 0.0082.

c. 0.0164.

d. 0.1336

Answer:

Option D

Step-by-step explanation:

We are given;

Null hypothesis; H0: μ = 20

Alternative hypothesis; Ha: μ ≠ 20

Population Standard deviation; σ = 5

Sample size; n = 25

Sample mean; x¯ = 17.6

Let's find the z-score from the formula;

z = (x¯ - μ)/(σ/√n)

z = (17.6 - 20)/(5/√5)

z = - 1.073

From online p-value from z-score calculator attached, using z = -1.073; two tailed hypothesis; significance value of 0.05,we have;

The P-Value is 0.283271.

Looking at the given options, the closest to the p-value is option D

8 0

3 years ago

A line is perpendicular to y=2/3x+2/3 and intersects the point (-2,4). What is the equation of this perpendicular line?

alexira [117]

Answer:

y = - $\frac{3}{2}$ x + 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{2}{3}$ x + $\frac{2}{3}$ ← is in slope- intercept form

with slope m = $\frac{2}{3}$

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{\frac{2}{3} }$ = - $\frac{3}{2}$

Using the point- slope form

with m = - $\frac{3}{2}$ and (x₁, y₁ ) = (- 2, 4) , then

y - 4 = - $\frac{3}{2}$ (x - (- 2) ) , that is

y - 4 = - $\frac{3}{2}$ (x + 2) ← distribute

y - 4 = - $\frac{3}{2}$ x - 3 ( add 4 to both sides )

y = - $\frac{3}{2}$ x + 1 ← in slope- intercept form

5 0

3 years ago