All categories

3 years ago

18-23(if you want) I don’t understand what do, please help!

Mathematics

2 answers:

Tamiku [17]3 years ago

3 0

Answer:

-22

Step-by-step explanation:

1.Factor out the negative sign.

2.Calculate (add for question 18)

3. Add the negative sign back.

Hope this helps :)

Radda [10]3 years ago

3 0

18. -9-(-13) = 4
19. -7-(-8) = 1
20. -6-(-6) = 0
21. -10-12= -22
22. 32-(-6) = 38
23. 0-20= -20

You might be interested in

Please hurry need done asap

Dmitriy789 [7]

Answer:

$y=0.46591x+7.71591$

Step-by-step explanation:

Labelled points are $(21,\: 17.5)=(x_1,\:y_1) \: \&\:(43,\: 27.75)=(x_2,\:y_2)$

Slope of line (m) $=\frac{27.75-17.5}{43-21} =\frac{10.25}{22} =\frac{41}{88}$

Equation of line in point - slope form is given as:

$y-y_1 = m(x-x_1)$

$\therefore y-17.5= \frac{41}{88} (x-21)$

$\therefore y= \frac{41}{88} x-\frac{861}{88}+17.5$

$\therefore y= \frac{41}{88} x+17.5-\frac{861}{88}$

$\therefore y= \frac{41}{88} x+\frac{1,540-861}{88}$

$\therefore y= \frac{41}{88} x+\frac{679}{88}$

$\therefore y=0.465909091x+7.71590909$

$\therefore y=0.46591x+7.71591$

7 0

3 years ago

the perimeter of a rectangle is84cm and its length is 6cm longer than its breadth.find the lenth and breadth of the rectangle

mash [69]

So,the length of rectangle is 24 cm

 The breadth of rectangle is 18 cm

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

4 0

4 years ago

Read 2 more answers

Suppose you have a bag containing 2 black marbles and 3 red marbles. You reach into the bag, select a marble, see what color it

TiliK225 [7]

Answer:

$\dfrac{9}{25}$

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

$P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }$

Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

$P(\text{Second red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5}$

Now, the required probability can be found as:

$P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }$

3 0

3 years ago

How many boys are in the sculpting class ? Plz plz help asap ?

elena-14-01-66 [18.8K]

6 boys, ratio is boy:girl 2:3

3 0

3 years ago

I really need the answers to these cuz they'll make or break my grade

MrMuchimi

Answer:

whats the question? its a little blurry and hard to see

Step-by-step explanation:

8 0

3 years ago