All categories

2 years ago

Can someone check my answers and tell me if it’s right or not? Thank you so much :)

Mathematics

2 answers:

Tpy6a [65]2 years ago

8 0

Answer:

some are correct but some are not.

Step-by-step explanation:

You got to pay attention to all the negatives in the equations. Number 3 is incorrect. The reason is you started the plot at positive 6 not negative 6

inessss [21]2 years ago

3 0

Answer:

yes i think u are correct

Step-by-step explanation:

You might be interested in

A 13 foot board is cut into 2 pieces, if one piece is x feet long express the other length in terms x

pychu [463]

Answer:

if they are equal then it would be 6.5

7 0

2 years ago

A farmer raises only ducks and pigs. There are 55 animals in all on his farm, and 146 legs.

nordsb [41]

Answer:

Number of ducks = 37

Number of pigs = 18

Step-by-step explanation:

Let,

x be the number of ducks

y be the number of pigs

According to given statement;

x+y=55 Eqn 1

2x+4y=146 Eqn 2 (As ducks will have 2 legs and pigs will have 4)

Multiplying Eqn 1 by 2

2(x+y=55)

2x+2y=110 Eqn 3

Subtracting Eqn 3 from Eqn 2

(2x+4y)-(2x+2y)=146-110

2x+4y-2x-2y=36

2y=36

Dividing both sides by 2

$\frac{2y}{2}=\frac{36}{2}\\y=18$

Putting y=18 in Eqn 1

x+18=55

x = 55-18

x = 37

Hence,

Number of ducks = 37

Number of pigs = 18

8 0

2 years ago

The coordinates of the endpoint of QS are Q(-9,8) and S(9,-4). Point R is on cue as such that QR:RS Is in the ratio 1:2. What ar

marishachu [46]

R(–3, 4)

Step-by-step explanation:

Let Q(-9,8) and S(9,-4) be the given points and let R(x, y) divides QS in the ratio 1:2.

By section formula,

$R(x, y)=R\left(\frac{m x_{2}+n x_{1}}{m+n}, \frac{m y_{2}+n y_{1}}{m+n}\right)$

Here, $x_{1}=-9, y_{1}=8, \text { and } x_{2}=9, y_{2}=-4 \text { and } m=1, n=2$

Substituting this in the section formula

$R(x, y)=R\left(\frac{1(9)+2(-9)}{1+2}, \frac{1(-4)+2(8)}{1+2}\right)$

To simplifying the expression, we get

$\Rightarrow R(x, y)=R\left(\frac{9-18}{3}, \frac{-4+16}{3}\right)$

$\Rightarrow R(x, y)=R\left(\frac{-9}{3}, \frac{12}{3}\right)$

⇒ R(x,y) = R(–3,4)

Hence, the coordinates of point R is (–3, 4).

6 0

3 years ago

if sally has 5 apples and 4 oranges and oranges weigh 5 lbs per orange and apples weigh 20 lbs an apple how much is sallys final

kotykmax [81]

4 oranges multiplied by the 5 pounds =20 + the other 20 = 40. Your answer is 40

5 0

3 years ago

Read 2 more answers

What are the standard measurement sizes for dry measuring cups?

swat32

Answer:

The standard 4 measuring cup sizes are: 1 cup, 1/2 cup, 1/3 cup and 1/4 cup. With those four cup sizes you can measure dry ingredients for any recipe.

Step-by-step explanation:

7 0

3 years ago