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2 years ago

HELP

Mathematics

1 answer:

I am Lyosha [343]2 years ago

5 0

Step-by-step explanation:

since Chelsea can paint in 9hrs and Greg in 7, add the hrs and divide by 2 i.e (9+7)/2 =8 hrs

~10 hrs

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The lowest number is 11 the range is 13 and the median is 17 what are the 3 numbers

11Alexandr11 [23.1K]

Answer:

11, 17, and 28.

Step-by-step explanation:

$x, y, z\\$

Lowest number is $x$

Median is $y$

Highest number is $z$

$x=11\\y=17\\\\z-x=17\\z-11=17\\z-11+11=17+11\\z=28\\\\x=11\\y=17\\z=28\\\\11, 17, 28$

3 0

2 years ago

Rewrite the following fractions as division problems. a. 7⁄11 b. 5⁄2 c. 9⁄10 d. 7⁄15

larisa [96]

A. 7/11= 7 ÷ 11
B. 5/2= 5 ÷ 2
C. 9/10= 9 ÷ 10
D. 7/15= 7 ÷ 15

A fraction is just a division problem. 7/11 would be considered 7 ÷ 11 (or just 7/11) just do the same for the rest of the fractions.

3 0

2 years ago

Which of the following equations names the same line as -2x – 3y = 5?

qaws [65]

Answer:

Step-by-step explanation:

_6x -9y =15

_6x÷3=-2x

9y÷3=3y

15÷3=5

so,_2x -3y =5

7 0

2 years ago

Read 2 more answers

Four points from a line are shown in the table below.

Dvinal [7]

Answer:

Correct choice is D. $y=-x+3$ .

Step-by-step explanation:

pick any two points from the table say (0,3) and (1,2)

Now we we can use both points to find the equation of line.

slope $m=\frac{y_2-y_1}{x_2-x_1}=\frac{2-3}{1-0}=\frac{-1}{1}=-1$

now plug slope m=-1 and any point say (0,3) into point slope formula

$y-y_1=m\left(x-x_1\right)$

$y-3=-1\left(x-0\right)$

$y-3=-1\left(x\right)$

$y-3=-x$

$y=-x+3$

Hence correct choice is D. $y=-x+3$ .

8 0

3 years ago

A family ordered some candy bars and bags of chips for snacking. The number oof candy bars was twice as much as the number of ba

nikdorinn [45]

Answer:

The family bought 2 bags of chips

Step-by-step explanation:

Let the number of chips bags be = x

The number of candy bars = twice as much as the number of bags of chip

The number of candy bars = 2x

The total cost spent is = $5.50

Therefore cost of all the chips bags + candy bars = 5.50

2x + x = 5.50

3x = 5.50

x = $\frac{5.50}{3}$

x = 1.83

x = 2 (approx)

Thus the number of chips is 2 and the candy bars is 2(2) = 4 bags

4 0

2 years ago