I'm confused on my math homework

Segment DC is a diameter of circle A in the figure below. If angle DAB measures 23.5 degrees, what is the measure of arc DB?

vfiekz [6]

The picture in the attached figure

we know that
if m ∠DAB=23.5°
then
arc DB=23.5°------> by central angle

the answer is
arc DB=23.5°

8 0

4 years ago

Use the table to determine what percent of students prefer school uniforms and what percent do not prefer school uniforms. What

Ahat [919]

16 + 4 = 20

16/20 = 80% or 4/5 (20 x 5 = 100, 16 x 5 = 80)

4/20 = 20% or 1/5 (20 x 5 = 100, 4 x 5 = 20)

The relationship is that more students do not prefer school uniforms compared to the ones that do prefer them.

Hope this helps!

3 0

3 years ago

From a population of size 400, a random sample of 40 items is selected. The median of the sample Group of answer choices must be

avanturin [10]

Answer:

400+40+200+400 +200 +10+400×2+10

4 0

4 years ago

See attachment to help, please. Only correct answers.

LekaFEV [45]

I believe the answer is B.) 120 because 170 is much wider than the CFE so it needs to be lower than that but not to much lower which is where 120 would come in.

4 0

4 years ago

Julio is training for a swimming race. The first part of his training schedule is shown. Session 1 2 3 456 Swimming distance (mi

Volgvan

An arithmetic sequence is a sequence in which the difference between each consecutive term remains same (constant).

The explicit formula for an arithmetic sequence is $A_n=a+(n-1)d$ , where a is first term of sequence, d is the common difference between consecutive terms.

A) We can see from Julio's swimming distance that it is in arithmetic sequence as after every successive training session Julio's swimming distance increased by 0.30 miles.

$0.55-0.25=0.30$

$0.85-0.55=0.30$

$1.75-1.45=0.30$

Therefore, we can see that Julio's training schedule is an arithmetic sequence.

B) Let us find Julio will take how many days to swim 2.95 miles by using explicit formula.

$A_n=a+(n-1)d$

Let us substitute our given information in above formula.

$2.95=0.25+(n-1)0.30$

$2.95=+0.25+0.30n-0.30$

$2.95=0.30n-0.05$

$2.95+0.05=0.30n$

$3.00=0.30n$

$n=\frac{3.00}{0.30}=10$

We are told that Julio swims every two days, this implies that he would swim on alternate days. So he will swim 2.95 miles on 10*2 =20th day.

Let us find 20th day will be which day. As Julio started his training schedule on Tuesday, 20th day will be a Sunday. Therefore, Julio will swim for 2.95 miles on a Sunday.

6 0

3 years ago