MATHEMATICS MIDDLE SCHOOL

lu is stringing beads to make a necklace she is using. she is using 30 of the 8 mm beads 70 of the 4 mm beads and 40 of the 2 mm beads. how long will her finished neacklace be in centimeters?

Answers

Answer 1

Answer:

Answer:

60cm

Step-by-step explanation:

30 (8)+70 (4)+40 (2)=600mm

1mm=0. 1cm

600mm=0. 1 (600)cm

600mm=60cm

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Hi can any body tell me the answer

Answers

Answer:

£76

Step-by-step explanation:

first find out how much it would cost for the 1 and half hour:

3 x 16 = 48

then find the total cost:

28 + 48 = 76

hope this helps!

The gravitational pull on Planet X is about 40% that of Earth’s. Would Planet X weigh more or less than Planet Earth?

Answers

Answer:

Planet X weighs less than planet earth

Step-by-step explanation:

Planet X will weigh less than planet earth because its gravitational pull is only 40% of planet earth . This means that planet earth is heavier than Planet X .

There were 1200 boys at a school assembly. The ratio of boys to girls at the assembly was 20:23. How many girls were at the assembly?

Answers

The required number of girls in the school assembly is 1380.

Given,
There were 1200 boys at a school assembly. The ratio of boys to girls at the assembly was 20:23. Number of girls in the assembly line is to be determined

What is the Ratio?

The ratio can be defined as the proportion of the fraction of one quantity towards others. e.g.- water in milk.
Representation of ratio of two values a and b, ratio = a:b.

Let the number of girls in the school assembly be x.
There were 1200 boys at a school assembly. The ratio of boys to girls at the assembly was 20:23. So the ratio can be written as,
1200 : x = 20 : 23
1200 / x = 20 / 23
x = 1200 * 23 / 20
x = 60 * 23
x = 1380
Here, the number of girls in the school assembly is 1380.

Thus the required number of girls in the school assembly is 1380.

Learn more about ratio here:

brainly.com/question/13419413

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I believe the answer is 1,600 girls

How do you get the rule of 1,3,6,10,15,21,28

Answers

1, 3, 6, 6, 10 , 15, 21, 28 the rule is to add 1 then 2 then 3 and on
1 + 2 = 3 + 3 = 6 + 4 = 10 + 5 = 15 + 6 = 21 + 7 = 28 :)

A student government organization is selling Christmas trees as a fundraiser. On Friday, they sold 5 noble fir trees and 3 douglas fir trees for a total of $420. On Saturday, 12 noble fir trees and 9 douglas fir trees were sold for a total of $1,080. What is the cost per tree for each type?how much is 1 douglas?
how much is 1 noble fir?

Answers

You have to do a system, lets say x are noble fir trees and y are douglas fir trees,
5x+3y=420
12x+9y=1080

if you solve this you get,
x=60 and
y=40
SO Noble fir trees cost $60 and Douglas fir trees cost $40.

Complete the following proof.Given: m ∠XOY = m ∠WOV
m YZ = m ZW
Prove: m XZ = m ZV