All categories

2 years ago

Which expression has a value of 13? (2 points)

Mathematics

1 answer:

RideAnS [48]2 years ago

8 0

Answer:

it is option B that is correct

Step-by-step explanation:

use BODMAS

B- Brackets

O-order

D-division

M-multiplication

Addition

Subtraction

You might be interested in

Two forces act on an object. The first Force has a magnitude of 400 Newtons and acts at an angle of 30 degrees as measured from

Sedaia [141]

ANSWER

Option D is correct

EXPLANATION

We resolve the forces into component forms.

$F_1 = 400 \cos(30) i + 400 \sin(30) j$

$F_1 = 200 \sqrt{3} i +200j$

Also the second is resolved to obtain,

$F_2= 280 \cos(135) i + 280 \sin(135) j.$

$F_2= - 140 \sqrt{2} i + 140 \sqrt{2} j$

To find the resultant vector, V, We add the corresponding components of the two forces to get:

$V=F_1+F_2$

$\implies \: V = (200 \sqrt{3} - 140 \sqrt{2} )i + (200 + 140 \sqrt{2})j$

The correct answer is D.

3 0

3 years ago

Find the coordinates of the midpoint of a segment with the given endpoints. A (-1, 4) and B (-5, -2)

ANEK [815]

Step-by-step explanation:

solution,

midpoint between A(-1,4) and B(-5,-2)=

(X1 + X2 ÷2, Y1 + Y2 ÷2)

=(-1-5÷2 , 4-2)

=(-6÷2 ,2÷2)

=(-3 , 1)

therefore the midpoint between A(-1,4) and B(-5 ,-2)=(-3,1)

8 0

3 years ago

Given that abc is congruent to def, ac=21x-19 and df=3x+17 solve for x

rewona [7]

21x-19=3x+17
18x=36
x=2

5 0

3 years ago

Assume that random guesses are made for seven multiple choice questions on an SAT test, so that there are equals 7 trials, eac

NeTakaya

Answer: 0.5

Step-by-step explanation:

Formula for binomial probability :-

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where P(x) is the probability of getting success in x trials , n is the total number of trials and p is the probability of getting success in each trial.

Given : The number of trails : n=7

The probability of success for each trial : p=0.5

Now, the probability that the number x of correct answers is fewer than 4 will be :-

$P(x$

Hence, the probability that the number x of correct answers is fewer than 4 = 0.5

4 0

3 years ago

Read 2 more answers

There are a total of 64 students in a drama club and a yearbook club. The drama club has 10 more students than the yearbook club

g100num [7]

Given:
64 total students
x = drama club students
y = yearbook club students

x = y + 10
y = 64 - x

y = 64 - x
y = 64 - (y + 10)
y = 64 - y - 10
y + y = 64 - 10
2y = 54
2y/2 = 54/2
y = 27

x = y + 10
x = 27 + 10
x = 37

To check:

x + y = 64
37 + 27 = 64
64 = 64

8 0

3 years ago