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3 years ago

Yo im not good at this stuff, can someone help me?

Mathematics

1 answer:

Kazeer [188]3 years ago

7 0

Answer:

21 kWh

Step-by-step explanation:

1. Subtract 25% from the original amount.

25% of 28 kWh is ...

0.25 × 28 kWh = 7.00 kWh

Subtracting this from 28 kWh, we find the usage after reduction to be ...

28 kWh - 7 kWh = 21 kWh

2. We know that if we reduce 100% of a quantity by 25%, then the resulting amount is (100 -25)% = 75% of the original. As a fraction, this is 75/100 = 3/4 of the original amount. Then the reduced usage is ...

(3/4) × (28 kWh) = 3·(7·4)/4 kWh = 3·7 kWh = 21 kWh

Mario must reduce his usage to 21 kWh or less.

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Please solve it's worth 12 points

4vir4ik [10]

Answer:

300 feet squared i think

Step-by-step explanation:

7 0

2 years ago

Trapezoid ABCD has vertices A(1,6) B(-2,6) C(-10,-10) and D(20,-10). Find the measure of ABCD’s midsegment to the nearest tenth

Elina [12.6K]

Answer:

16.5 units

Step-by-step explanation:

The midsegment is the distance between the midpoints of the nonparallel sides of the trapezoid.

The trapezoid ABCD has vertices A(1,6) B(-2,6) C(-10,-10) and D(20,-10).

We want to find the midsegment of ABCD to the nearest tenth.

The midpoint of BC is;

$( \frac{ - 2 + - 10}{2} , \frac{6 + - 10}{2} ) = ( - 6, - 2)$

The midpoint of AD is :

$( \frac{1 + 20}{2} , \frac{6 + - 10}{2} ) = ( 10.5, - 2)$

The length of the midsegment is the distance from (-6,2) to (10.5,2)

$= |10 .5 - - 6| = 16.5$

4 0

3 years ago

3x + 2y = 4

arlik [135]

3x + 2y = 4
2y = -3x + 4
Divide by 2
Solution: y = -3/2x + 2

x + 2y = -4
2y = -x - 4
Divide by 2
Solution: y = -1/2x - 2

6 0

3 years ago

A car can be rented for $60 per week plus $0.40 per mile. How many miles can be driven if you have at most $300 to spend for wee

Step2247 [10]

Answer: 600 Miles

Step-by-step explanation:

We start off with $300.

We have to spend $60 to rent the car.

300 - 60 = $240

The remaining $240 can be spent on miles.

$240/0.40 = 600 Miles

6 0

3 years ago

Can you guys help me with my homework?

tatiyna

Answer:

3π=3×3.14 =9.42

7π=7×3.14=21.98

Step-by-step explanation:

so the distance around window , in feet be

3π=3×3.14=9.42

7π=7×3.14=21.98

8 0

3 years ago

Yo im not good at this stuff, can someone help me?​

Yo im not good at this stuff, can someone help me?