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3 years ago

PLS HELP ME 50 POINTS PLSSSSSSSSSSSS

Mathematics

2 answers:

timama [110]3 years ago

6 0

Step-by-step explanation:

11 is she answered 40 questions correctly

Ulleksa [173]3 years ago

4 0

Answer:

1. 0.2 x 70 = 14

2. 0.282 x 92 = 25.9

3. 0.6 x 68 = 40.8

4. 0.25 x 96 = 24

5. 0.08 x 40 = 3.2 = 3

6. 0.24 x 60 = 14.4 = 14

7. 0.08 x 50 = 4

8. 52 divided by 260 = 0.2 = 20%

9. 30 divided by 0.75 (75%) = 40

10. 0.15 x 24 = 3.6

11. 0.9 x 50 = 45

12. 4 divided by 40 = 0.1 = 10%

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5x + 10y=35<br> 2x + 12y=30

masya89 [10]

Answer:

1. 5x+10y=35 x= 5 y= 1

2. 2x+12y=30 x= 3 y= 2

Step-by-step explanation:

1. 5x+10y

10+5=15; 15-10=5; x=5

10/5=2; 2/2=1; y=1

5(5)=25

10(1)= 10

25+10= 35

YAY!

2. 2x+12y

12/2=6; 6/2=3; x=3

12/6=2; y=2

2(3)=6

12(2)=24

24+6= 30

YAY!

7 0

4 years ago

What is the sum 2/6+7/6

galben [10]

9/6 or the simplified version is 1 1/2

6 0

3 years ago

Read 2 more answers

If you have a $54.40 balance in your checking account and you make a deposit of $150.00 what will the new balance be

Rom4ik [11]

I think that the ballance would be 204.40$

3 0

3 years ago

Quotient of 1+i/3+4i?

NISA [10]

Answer:

$\dfrac{7}{25} - \dfrac{1}{25}i$

Step-by-step explanation:

I assume you are asking

$\dfrac{1 + i}{3 + 4i}$

although what you wrote means this

$1 + \dfrac{i}{3} + 4i$

Back to what I think is your problem:

$\dfrac{1 + i}{3 + 4i} =$

$= \dfrac{1 + i}{3 + 4i} \times \dfrac{3 - 4i}{3 - 4i}$

$= \dfrac{(1 + i)(3 - 4i)}{(3 + 4i)(3 - 4i)}$

$= \dfrac{3 - 4i + 3i - 4i^2}{9 - 16i^2}$

$= \dfrac{3 - i + 4}{9 + 16}$

$= \dfrac{7 - i}{25}$

$= \dfrac{7}{25} - \dfrac{1}{25}i$

8 0

3 years ago

3. A fence is made up of eight 8 5/7-foot sections. How long is the fence? Write your answer as a mixed number in lowest terms.

rewona [7]

Answer:

Step-by-step explanation:

3)A fence is made up of eight 8 5/7-foot sections. This means the total number of feet's is 8 × 8 5/7. Expressing 8 5/7 as improper fraction, it will be 61/7 feet's

The total length of the fence =

8 × 61/7 = 488/7 feet's

Expressing as mixed fraction, it becomes

69 5/7 feets

4) Cynthia spent 3/4 of her time at the gym on the stair machine. She spent a total of 21 3/4 minutes on the stair machine. This means that the time she spent on the gym is 3/4 × 21 3/4 .

Converting 21 3/4 to improper fraction, it becomes 87/4

The time she spent on the gym

= 3/4 × 87/4 = 261/16

= 16 5/16 minutes

5) On Monday, Ryan jogged 1 ½ miles in ¼ hour. On Wednesday he jogged 2 1/3 miles in 1/3 hour. Converting to improper fractions,

the miles ran on Monday= 1 ½ miles = 3/2 miles

the miles jogged on wednesday = 2 1/3 miles = 7/3 miles

How much farther did Ryan jog on Wednesday than on Monday? This would be 7/3 - 3/2

= 5/6 miles

6) One requires 2/3 cup of flour, another requires 7/8 cup of flour, and the third require 3/4 cup of flour.

Total amount of flour that Josh will use is

2/3 +7/8 +3/4 = (16+21+18)/24

= 55/25 = 2 7/25 cups of flour

5 0

3 years ago