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Gennadij [26K]
3 years ago
8

I need help on problem 1

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
4 0

890 = 280 + 280 + (280 - 195) + x

x = mass of the apple.

280 - 195 = 85

The lemon weights 85 grams.

280 + 280 + 85 = 645

890 - 645 = 245

Thus, x = 245

The mass of the apple is 245 grams.

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Make a line plot for each set of data.
Gala2k [10]

Answer:

Look at Step by Step

Step-by-step explaination

All you need to do is find the frequency of the test scores.

70 = 2 dots

75 = 0

80 = 3 dots because there are 3 students that got a 80 %

85 = 3 dots because there are 3 students that got a 80 %

90 = 4 dots because there are 4 students that got a 90 %

95 = 3 dots

100+ = 0 dots

3 0
3 years ago
The length of a rectangle is four times its width. If the area of the rectangle is 324m^2, find its perimeter.
Anuta_ua [19.1K]

Answer:

perimeter=90

Step-by-step explanation:

We know that the length is four times the width, so:

l=4w

We also know the area, which is 324 m². The formula for area:

A=l*w

Insert the known values:

324=(4w)*w

Solve for w. Simplify by removing parentheses:

324=4w*w\\324=4w^2

Divide 4 from both sides to isolate the variable:

\frac{324}{4}=\frac{4w^2}{4}  \\\\81=w^2

Find the square root of both sides:

\sqrt{81} =\sqrt{w^2} \\\\w=9

The width is 9 m.

We know the width. Now find the length by using the area formula and inserting known values:

324=l*9

Solve for l. Divide both sides by 9:

\frac{324}{9}=\frac{l*9}{9}\\\\  l=36

The length of the rectangle is 36. (You can check: 4 times 9 is 36)

Now find the perimeter:

P=2l+2w

Insert values:

P=2(36)+2(9)\\\\P=72+18\\\\P=90

The perimeter is 90 m.

5 0
3 years ago
A bus driver covers a certain distance in 3 hours at an average speed of 80 km/h. How long will the journey take at an average s
BaLLatris [955]

Answer:

d= s x t

=50km/h x 3h

= 150km/h

8 0
2 years ago
What is the inverse operation of addition? How do you "undo" addition?
Allisa [31]
Multiplication because you undo it
8 0
3 years ago
Describe the rule for the rotation.
finlep [7]

Answer:

Step-by-step explanation:

If you draw a line from the origin (0,0) to L ( the original point ) and a different line from the origin to the image L' you can see the angle of rotation as being

90 degrees and that the rotation is clockwise.  

the rule is (x, y) become ( y, -x)

4 0
3 years ago
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