MATHEMATICS MIDDLE SCHOOL

1) 4.
2)9.
3)10.
4)None of the choices are correct.
1) 4. 2)9. 3)10. 4)None of the choices are correct. - 1

Answers

Answer 1
Answer:

Answer:

We know angle ABD is a right angle due to the marking, therefor 4x + 5x= 90.

9x = 90

x = 10.

Therefor the unknown value of x is 10.
Answer 2
Answer:

Answer:h

Step-by-step explanation:

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Jeremiah always bicycles to and from work. The total length of a trip is 14.6 kilometers.Last month,Jeremiah worked 18 days. How many kilometers did he bicycle to and from work last month?

Answers

14.6*18= 262.8
So, Jeremiah bicycled 262.8 kilometers to and from work in 18 days
Hope this Helps :D

Ok so if the total length of the trip was 14.6 you would multiply that by 18 because that's the number of times he worked and so you get 262.8 so that would be your answer if I'm not mistaken

Are the given angles complementary, supplementary, or neither? ∠VYU and ∠UYZ

A. complementary

B. supplementary

C. neither

Answers

B. Complementary means totaling 90 degrees, and supplementary means totaling 180 degrees.

How to I find 2/5 of 40 minutes ?

Answers

(2)/(5)*40 =2*8=16 minutes
Have a nice day!!! ^^
Well, whenever OF is used in a mathematics, it mostly refers to multiplication. So basically, this means 2/5 x 40. So;
2/5 x 40
80/5. 
   when 5 divides 80, you get  16. So the answer to this is 16. Hope i helped. Have a nice day.

Solve the equation. Please show working :D :)
1/2y-21/4=-35/4 for y

Answers

Let's solve your equation step-by-step.1/2y−21/4=−35/4Step 1: Simplify both sides of the equation.12y+−21/4=−35/4Step 2: Add 21/4 to both sides.1/2y+−21/4+21/4=−35/4+21/41/2y=−7/2Step 3: Multiply both sides by 2.2*(1/2y)=2*(−7/2)y=−7Answer:y=−7

if a humming bird were to get all of its food from a feeder then a 16 oz nectar feeder could feed about 80 humming birds a day how many humming birds would you expect to be able to feed with a 12 oz feeder?

Answers

we know that

using proportion

(80)/(16) (humming\ birds)/(oz) =(x)/(12) (humming\ birds)/(oz)\n \n 80*12=16*x\n \n x=(80*12)/(16) \n \n x=60\ humming\ birds

therefore

the answer is

60\ humming\ birds
I think about 60 cause 80 divided by 16=5x16=80 and 16-4=12=12x5=60.

What is 400 divided by 77 x 100 + 2000 -55 +999

Answers

400 ÷ 77 x 100 + 2000 - 55 + 999 

u would use dmas :
1. division
2. multiplication
3. addition
4. subtraction

400 ÷ 77 = 5.19 

5.19 x 100 + 2000 - 55 + 999 

5.19 x 100 = 519

519 + 2000 - 55 + 999

519 + 2000 + 999 = 3518

3518 -55 = 3463 

hope this helps
400/ (77*100+ 2000 -55+ 999)
= 400/ (7700+ 2000 -55+ 999)
= 400/ 10,644
= 100/2661

The final answer is 100/2661~
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Could somebody please answer these four questions with simple yet explanatory answers?